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roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
Become arthur: a standalone suite, not an Animator Pro front-end The test renderer turned out to be the product. Everything that decides how the work looks - stabilisation, reduction, timing, frame removal, palette - already happens here, and the flat indexed output already reads the way it should. The reason to leave is in the original design's own rule: never make a timing decision that requires a full render to evaluate. Honouring that moved every judgement out of Animator Pro, which left the host doing nothing but writing a file, in exchange for modal UI, minutes-long renders, one-level undo, FLX delta invariants, a single tween state and a cel singleton. What does NOT change is the constraint. 320x200, indexed palette, flat fills, no antialiasing - inherited, but load-bearing rather than accidental. The rasteriser writes palette indices and expands to RGBA only at the end precisely so nothing can soften an edge. Modern conveniences belong in the workflow. Adds docs/design.md: the principles, carried over without the Poco/FLX/cel machinery, plus architecture and an honest list of what is missing - the largest gap being that plates still have nowhere to be drawn. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:47:41 -04:00
<title>arthur</title>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<style>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
:root { --bg:#0b0d13; --panel:#12151f; --line:#232836; --fg:#e8eaf0;
--dim:#8891a5; --accent:#fbbf24; --ok:#4ade80; --err:#f87171; }
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
* { box-sizing: border-box; }
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
body { margin:0; background:var(--bg); color:var(--fg);
font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace; }
header { padding:12px 18px; border-bottom:1px solid var(--line);
display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
h1 { font-size:14px; margin:0 8px 0 0; letter-spacing:.04em; }
h1 span { color:var(--dim); font-weight:400; }
main { padding:16px 18px 40px; display:flex; flex-direction:column; gap:16px; }
.row { display:flex; gap:16px; flex-wrap:wrap; }
.panel { background:var(--panel); border:1px solid var(--line); border-radius:4px; padding:12px; }
.panel h2 { font-size:11px; text-transform:uppercase; letter-spacing:.08em;
color:var(--dim); margin:0 0 8px; font-weight:500; }
canvas { display:block; image-rendering:pixelated; max-width:100%; border-radius:2px; }
button,input[type=text],select { font:inherit; background:#1c2130; color:var(--fg);
border:1px solid var(--line); border-radius:3px; padding:5px 10px; cursor:pointer; }
button:hover { border-color:var(--accent); }
input[type=text] { cursor:text; }
label.ctl { display:grid; grid-template-columns:132px 1fr 46px; gap:10px;
align-items:center; margin-bottom:6px; }
label.ctl span:first-child { color:var(--dim); }
label.ctl output { text-align:right; color:var(--accent); }
input[type=range] { width:100%; accent-color:var(--accent); }
#status { color:var(--dim); } #status.ok{color:var(--ok)} #status.err{color:var(--err)} #status.warn{color:var(--accent)}
#readout { color:var(--dim); font-size:12px; }
/* the frame strip is the editing surface */
#strip { display:flex; flex-wrap:wrap; gap:4px; }
.fr { position:relative; cursor:pointer; border:2px solid transparent; border-radius:3px; line-height:0; }
.fr canvas { border-radius:1px; }
.fr span { position:absolute; left:2px; bottom:2px; font-size:10px; line-height:1.2;
padding:0 3px; border-radius:2px; background:#000a; color:#fff; }
.fr.keep { border-color:var(--ok); }
.fr.drop { border-color:#2a2f3e; }
.fr.drop canvas { opacity:.26; filter:grayscale(1); }
.fr.cur { border-color:var(--accent); }
.fr.keep::after { content:'●'; position:absolute; right:3px; top:1px; color:var(--ok); font-size:10px; }
#sheet { display:flex; flex-wrap:wrap; gap:10px; }
#sheet .cell { display:flex; flex-direction:column; gap:3px; cursor:pointer; }
#sheet .cell span { color:var(--dim); font-size:11px; }
#sheet .cell:hover span { color:var(--accent); }
#palette { display:flex; gap:12px; flex-wrap:wrap; }
.sw { display:flex; align-items:center; gap:5px; color:var(--dim); font-size:11px; }
.sw input { width:26px; height:20px; padding:0; border:1px solid var(--line); background:none; }
.legend { color:var(--dim); font-size:11px; margin-top:6px; }
kbd { background:#1c2130; border:1px solid var(--line); border-radius:2px;
padding:0 4px; color:var(--fg); font-size:11px; }
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
</style>
</head>
<body>
<header>
Become arthur: a standalone suite, not an Animator Pro front-end The test renderer turned out to be the product. Everything that decides how the work looks - stabilisation, reduction, timing, frame removal, palette - already happens here, and the flat indexed output already reads the way it should. The reason to leave is in the original design's own rule: never make a timing decision that requires a full render to evaluate. Honouring that moved every judgement out of Animator Pro, which left the host doing nothing but writing a file, in exchange for modal UI, minutes-long renders, one-level undo, FLX delta invariants, a single tween state and a cel singleton. What does NOT change is the constraint. 320x200, indexed palette, flat fills, no antialiasing - inherited, but load-bearing rather than accidental. The rasteriser writes palette indices and expands to RGBA only at the end precisely so nothing can soften an edge. Modern conveniences belong in the workflow. Adds docs/design.md: the principles, carried over without the Poco/FLX/cel machinery, plus architecture and an honest list of what is missing - the largest gap being that plates still have nowhere to be drawn. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:47:41 -04:00
<h1>arthur <span>— rotoscope + frame removal</span></h1>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<button id="btn-synth">Synthetic</button>
<input type="text" id="framedir" value="frames" size="7" title="frame directory">
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<button id="btn-frames">Load frames</button>
<button id="btn-play">Play</button>
Audio-clocked playback for judging sync Lip sync cannot be judged silently. extract.sh now pulls the audio track and writes manifest.json alongside the frames; the page reads the true extraction rate from it rather than assuming one, since a guessed fps desynchronises picture from sound - the one thing this view exists to show. Audio is the clock: frame = floor(currentTime * fps). A slow render loop drops frames instead of drifting, and half/quarter speed work via playbackRate with the picture following for free. Scrubbing, stepping and clicking a thumbnail all seek the audio too. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:53:09 -04:00
<select id="speed" title="playback speed"><option value="1">1x</option><option value="0.5">½x</option><option value="0.25">¼x</option></select>
<audio id="audio" controls hidden style="height:28px;vertical-align:middle"></audio>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<button id="btn-keepall">Keep all</button>
<button id="btn-suggest">Suggest</button>
<input type="text" id="takename" value="line_01" size="9" title="take name">
Registered photo underlay as the plate reference The generated face oval was never going to be good enough to draw from: MediaPipe's face oval is the FACE boundary, cut at the hairline and excluding hair, ears, jaw and neck, so it is an egg by construction. Segmentation would give a real head outline but costs a 16MB model and per-frame inference for a shape that gets replaced by a drawing anyway. So the plate layer becomes switchable, and the useful modes are photographic: the source frame mapped into raster space through the same transform chain the contours go through. Registration is the whole point - the head sits still and a drawing traced from the underlay is already aligned to the mouth. An unregistered underlay would be decoration. - underlay.js: pixel->raster affine (a general affine, since MediaPipe normalises x by width and y by height), registered draw, palette posterise - plate modes: photo / photo dim / posterized / oval / oval+photo / none, B cycles - worksheet cells are registered composites rather than raw crops - Save frame 4x writes a 1280x800 PNG to draw on - selftest: FACE_OVAL simplicity, which was never asserted; a wrong ordering there reads as a lumpy plate rather than an obvious bowtie Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:57:59 -04:00
<select id="plateMode" title="plate representation (B to cycle)">
<option value="photo-dim">photo dim</option>
<option value="photo">photo</option>
<option value="posterize">posterized</option>
<option value="oval" selected>oval</option>
<option value="oval+photo">oval + photo</option>
<option value="off">none</option>
</select>
<button id="btn-saveframe">Save frame 4x</button>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<button id="btn-export">Export .take</button>
<span id="status"></span>
</header>
<main>
<div class="row">
<div class="panel">
<h2>source + landmarks</h2>
<canvas id="cv-source"></canvas>
<div class="legend">outer lip <b style="color:#4ade80">—</b> · inner lip <b style="color:#f87171">—</b></div>
</div>
<div class="panel">
<h2>stabilised (head-local)</h2>
<canvas id="cv-stab"></canvas>
Make the mouth lead legible and assertable "It feels like it does nothing" is indistinguishable from "it does nothing", and at 24fps a lead of 1 is 42ms - small enough to reasonably doubt. So the shift is now provable and visible rather than taken on trust: - shiftIndex is a pure exported function with assertions covering identity, both directions, and clamping at each end - the frame label always shows the mouth frame, not only when shifted, so the number can be watched diverging from f; non-zero leads also report in ms - the slider readout carries an explicit + sign - the stabilised pane draws the unshifted contour as a dark-green ghost when a lead is set, so the offset is something you can see Also: leadIndex called opts() on every invocation - ~14 DOM reads, once per strip thumbnail, so ~1000 per redraw at 74 frames. It reads a cached scalar now. The "different pose" assertion checks the whole track rather than one pair: synthetic poses hold for nine-frame beats, so a single pair can legitimately be identical while the shift works correctly. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:38:02 -04:00
<div class="legend">should sit still except the mouth · grey = held plate outline<br>dark green ghost = unshifted mouth when lead ≠ 0</div>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
</div>
<div class="panel">
<h2>flat render — 320×200 indexed</h2>
<canvas id="cv-render"></canvas>
<div class="legend" id="framelabel"></div>
Registered photo underlay as the plate reference The generated face oval was never going to be good enough to draw from: MediaPipe's face oval is the FACE boundary, cut at the hairline and excluding hair, ears, jaw and neck, so it is an egg by construction. Segmentation would give a real head outline but costs a 16MB model and per-frame inference for a shape that gets replaced by a drawing anyway. So the plate layer becomes switchable, and the useful modes are photographic: the source frame mapped into raster space through the same transform chain the contours go through. Registration is the whole point - the head sits still and a drawing traced from the underlay is already aligned to the mouth. An unregistered underlay would be decoration. - underlay.js: pixel->raster affine (a general affine, since MediaPipe normalises x by width and y by height), registered draw, palette posterise - plate modes: photo / photo dim / posterized / oval / oval+photo / none, B cycles - worksheet cells are registered composites rather than raw crops - Save frame 4x writes a 1280x800 PNG to draw on - selftest: FACE_OVAL simplicity, which was never asserted; a wrong ordering there reads as a lumpy plate rather than an obvious bowtie Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:57:59 -04:00
<div class="legend">audio drives the clock — dropped frames, never drift<br>
plate representation: <kbd>B</kbd> cycles · photo modes are <b>registered</b>
into raster space, so tracing them lands on the mouth</div>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
</div>
</div>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<div class="panel">
<h2>frames — green kept (gets its own drawing) · dim held from the last kept frame</h2>
<div id="strip"></div>
<input type="range" id="scrub" min="0" max="0" value="0" style="width:100%;margin-top:10px">
<div class="legend">
Registered photo underlay as the plate reference The generated face oval was never going to be good enough to draw from: MediaPipe's face oval is the FACE boundary, cut at the hairline and excluding hair, ears, jaw and neck, so it is an egg by construction. Segmentation would give a real head outline but costs a 16MB model and per-frame inference for a shape that gets replaced by a drawing anyway. So the plate layer becomes switchable, and the useful modes are photographic: the source frame mapped into raster space through the same transform chain the contours go through. Registration is the whole point - the head sits still and a drawing traced from the underlay is already aligned to the mouth. An unregistered underlay would be decoration. - underlay.js: pixel->raster affine (a general affine, since MediaPipe normalises x by width and y by height), registered draw, palette posterise - plate modes: photo / photo dim / posterized / oval / oval+photo / none, B cycles - worksheet cells are registered composites rather than raw crops - Save frame 4x writes a 1280x800 PNG to draw on - selftest: FACE_OVAL simplicity, which was never asserted; a wrong ordering there reads as a lumpy plate rather than an obvious bowtie Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:57:59 -04:00
<kbd>←</kbd> <kbd>→</kbd> step · <kbd>X</kbd> delete · <kbd>K</kbd> keep · <kbd>B</kbd> background ·
Mouth lead: nudge performance tracks ahead of the clock Smoothing does not literally delay anything - a centred moving average has zero phase lag - but it blurs onsets, so the visually salient moment of a mouth opening moves later even though the mean does not. Animators also draw mouth shapes a frame or two ahead of the sound as standard practice, so this is the normal control rather than a workaround. Only the performance tracks shift; the head and audio stay put, since it is the mouth that should anticipate. In photo-underlay modes the vector mouth will therefore no longer match the frame behind it, which is expected. The lead is baked into the exported take - key f carries the pose from source frame f+lead - so the Animator Pro renderer never needs to know about it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:34:08 -04:00
<kbd>[</kbd> <kbd>]</kbd> lead ·
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
click to select · double-click or shift-click to toggle ·
the mouth keeps <b>every</b> frame regardless
</div>
<div class="legend" id="readout"></div>
</div>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<div class="row">
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<div class="panel" style="flex:1 1 400px">
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<h2>knobs</h2>
<label class="ctl"><span>vertices</span><input type="range" id="verts" min="4" max="16" step="2" value="8"><output id="vertsv"></output></label>
Mouth lead: nudge performance tracks ahead of the clock Smoothing does not literally delay anything - a centred moving average has zero phase lag - but it blurs onsets, so the visually salient moment of a mouth opening moves later even though the mean does not. Animators also draw mouth shapes a frame or two ahead of the sound as standard practice, so this is the normal control rather than a workaround. Only the performance tracks shift; the head and audio stay put, since it is the mouth that should anticipate. In photo-underlay modes the vector mouth will therefore no longer match the frame behind it, which is expected. The lead is baked into the exported take - key f carries the pose from source frame f+lead - so the Animator Pro renderer never needs to know about it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:34:08 -04:00
<label class="ctl"><span>mouth lead ±f</span><input type="range" id="lead" min="-6" max="6" value="0"><output id="leadv"></output></label>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<label class="ctl"><span>contour avg ±f</span><input type="range" id="contourSmooth" min="0" max="4" value="1"><output id="contourSmoothv"></output></label>
<label class="ctl"><span>anchor avg ±f</span><input type="range" id="smoothWin" min="0" max="8" value="2"><output id="smoothWinv"></output></label>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<label class="ctl"><span>closed-mouth cut</span><input type="range" id="apertureThresh" min="0" max="400" value="120"><output id="apertureThreshv"></output></label>
Fix teeth band filling the whole mouth Three causes, all of them mine: Otsu always returns a split, including on a homogeneous region - given a dark cavity with no teeth it invents a threshold and calls half the pixels bright. The gate is now the separation between the two class means, which is the only thing that says whether the split means anything. Coverage was the wrong signal: it is high both when the mouth is full of teeth and when the region is uniformly dark and Otsu has split noise. The row scan tracked the last qualifying row anywhere rather than where the run from the top stops, so one bright row near the bottom - a lit lower lip inside the ring - pushed the line to full height. It now breaks at the first failing row once the run has started. MediaPipe's inner lip landmarks sit slightly outside the real opening, so the sampled region included lip pixels, which are bright and sit exactly at the boundary where they do most damage. The ring is now eroded toward its centroid before sampling, with the amount exposed as a knob. Adds a diagnostic panel showing the sampled crop, pixels above threshold, and the resolved line, because tuning this from numbers alone does not tell you whether the region being measured is even the right region. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:14:49 -04:00
<label class="ctl"><span>teeth contrast</span><input type="range" id="teethOn" min="1" max="60" value="16"><output id="teethOnv"></output></label>
Teeth as an extracted blob contour, not a clipped band The band filled the mouth because a band is the wrong reduction: the bright region is a blob, and reading it as "everything above a line" throws the shape away. Extracting a contour reintroduces the vertex-correspondence problem that made me avoid it, but for a blob there is a way out. Radial sampling from the centroid along N fixed directions makes vertex k always mean "the extent in direction k": correspondence holds by construction, the count is fixed, and temporal smoothing cannot reorder anything. It also yields a star-shaped reduction, which suits flat colour. Tongue rejection, which the band had no way to express: - pixels red relative to their own brightness are dropped (teeth are neutral) - component choice is biased toward the top of the cavity, since area alone picks the tongue when the mouth is wide - separate inner and outer controls: cavity erode pulls the sampled region off the lip edge, blob grow/erode resizes the found blob Also: a knob wired in app.js but missing from index.html threw during wiring and left a blank page with nothing useful in the console - which is exactly what happened to teethDwell in the previous commit. el() now names the missing id, and window.onerror surfaces it in the status line. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:24:52 -04:00
<label class="ctl"><span>cavity erode</span><input type="range" id="teethErode" min="0" max="45" value="18"><output id="teethErodev"></output></label>
<label class="ctl"><span>blob grow/erode</span><input type="range" id="blobGrow" min="-4" max="4" value="0"><output id="blobGrowv"></output></label>
<label class="ctl"><span>tongue reject</span><input type="range" id="tongueReject" min="2" max="40" value="18"><output id="tongueRejectv"></output></label>
<label class="ctl"><span>prefer upper</span><input type="range" id="topBias" min="0" max="120" value="60"><output id="topBiasv"></output></label>
<label class="ctl"><span>teeth vertices</span><input type="range" id="teethVerts" min="5" max="20" value="10"><output id="teethVertsv"></output></label>
<label class="ctl"><span>teeth avg ±f</span><input type="range" id="teethSmooth" min="0" max="4" value="1"><output id="teethSmoothv"></output></label>
Teeth from mouth-interior image content MediaPipe has no landmarks inside the lips, so teeth have to come from pixels. Tracing the bright blob would give a new contour every frame with no vertex correspondence - the exact boil docs/roto-puppet.md warns about. So the measurement yields a scalar, not a shape: Otsu within the cavity, scanned from the top for where the bright run stops, giving one line height per frame. The teeth polygon is the inner lip ring clipped to that line, so the silhouette is always the mouth's own shape and cannot disagree with the lips around it, and the only per-frame variable is a single number that smooths trivially. Presence gets hysteresis and minimum dwell, as plate selection does: a teeth block blinking on and off for single frames is worse than one simply absent. Tongue is not implemented. The same scalar approach would apply, gated on redness rather than brightness, but it is not visible in the test footage - the cavity reads dark with a bright upper-teeth band and nothing else. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:12:09 -04:00
<label class="ctl"><span>teeth dwell</span><input type="range" id="teethDwell" min="0" max="6" value="1"><output id="teethDwellv"></output></label>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<label class="ctl"><span>suggest tolerance</span><input type="range" id="tol" min="2" max="60" value="14"><output id="tolv"></output></label>
<div class="legend">
Mouth lead: nudge performance tracks ahead of the clock Smoothing does not literally delay anything - a centred moving average has zero phase lag - but it blurs onsets, so the visually salient moment of a mouth opening moves later even though the mean does not. Animators also draw mouth shapes a frame or two ahead of the sound as standard practice, so this is the normal control rather than a workaround. Only the performance tracks shift; the head and audio stay put, since it is the mouth that should anticipate. In photo-underlay modes the vector mouth will therefore no longer match the frame behind it, which is expected. The lead is baked into the exported take - key f carries the pose from source frame f+lead - so the Animator Pro renderer never needs to know about it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:34:08 -04:00
<b>mouth lead</b> shifts the performance tracks earlier (positive) against
the audio and the head. Averaging has no phase lag but it blurs onsets, so
an opening reads later than it is; animators also draw mouths a frame or
two ahead of the sound as standard practice. <kbd>[</kbd> <kbd>]</kbd>.<br>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<b>contour avg</b> 0 = off, 1 = ±1 frame. Removes per-frame landmark
jitter. Push past 2 and it starts eating articulation.<br>
<b>anchor avg</b> smooths the head transform only — never the contour.<br>
Teeth as an extracted blob contour, not a clipped band The band filled the mouth because a band is the wrong reduction: the bright region is a blob, and reading it as "everything above a line" throws the shape away. Extracting a contour reintroduces the vertex-correspondence problem that made me avoid it, but for a blob there is a way out. Radial sampling from the centroid along N fixed directions makes vertex k always mean "the extent in direction k": correspondence holds by construction, the count is fixed, and temporal smoothing cannot reorder anything. It also yields a star-shaped reduction, which suits flat colour. Tongue rejection, which the band had no way to express: - pixels red relative to their own brightness are dropped (teeth are neutral) - component choice is biased toward the top of the cavity, since area alone picks the tongue when the mouth is wide - separate inner and outer controls: cavity erode pulls the sampled region off the lip edge, blob grow/erode resizes the found blob Also: a knob wired in app.js but missing from index.html threw during wiring and left a blank page with nothing useful in the console - which is exactly what happened to teethDwell in the previous commit. el() now names the missing id, and window.onerror surfaces it in the status line. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:24:52 -04:00
<b>teeth contrast</b> gates on how far apart the cavity's dark and bright
halves are — Otsu always returns <i>some</i> threshold, so this is what
stops it inventing teeth in a dark mouth.
<b>cavity erode</b> pulls the sampled region in from the lip edge;
<b>blob grow/erode</b> resizes the found blob itself.
<b>tongue reject</b> drops pixels that are red relative to their own
brightness; <b>prefer upper</b> biases component choice toward the top of
the cavity, where teeth are and the tongue is not.
<b>dwell</b> is how many frames a presence change must persist.<br>
Frame removal for plates; mouth keeps every frame Sparseness was being applied for two different reasons at once. Aesthetic sparseness is set by the extraction rate; labour sparseness only binds on the plate, because a human draws each one. The mouth is traced and therefore free, and in limited animation lip sync is routinely the densest element - on 1s while heads hold on 2s and 3s. So: the mouth gets a key on every frame, and the frame strip is now the editing surface for deciding which frames need their own plate drawing. All frames start kept; delete the ones you don't want. - strip of face-cropped thumbnails, keep/drop per frame, keyboard driven - worksheet panel lists the drawings needed and the range each one holds - Suggest runs error-tolerance decimation on head pose as a starting point - export writes sparse plate keys + dense mouth keys, with a hold manifest - smoothContours: bounded exception to "never smooth the contour", which held only while keys were sparse enough to reject detector noise by sampling - averages are now a RADIUS in frames: 0 is off, 1 is +-1 - GPU delegate falls back to CPU instead of failing - #synth / #frames autorun for headless smoke tests Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:51:15 -04:00
<b>suggest tolerance</b> only affects the Suggest button: max head movement
allowed before a new drawing is required.
</div>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
</div>
Fix teeth band filling the whole mouth Three causes, all of them mine: Otsu always returns a split, including on a homogeneous region - given a dark cavity with no teeth it invents a threshold and calls half the pixels bright. The gate is now the separation between the two class means, which is the only thing that says whether the split means anything. Coverage was the wrong signal: it is high both when the mouth is full of teeth and when the region is uniformly dark and Otsu has split noise. The row scan tracked the last qualifying row anywhere rather than where the run from the top stops, so one bright row near the bottom - a lit lower lip inside the ring - pushed the line to full height. It now breaks at the first failing row once the run has started. MediaPipe's inner lip landmarks sit slightly outside the real opening, so the sampled region included lip pixels, which are bright and sit exactly at the boundary where they do most damage. The ring is now eroded toward its centroid before sampling, with the amount exposed as a knob. Adds a diagnostic panel showing the sampled crop, pixels above threshold, and the resolved line, because tuning this from numbers alone does not tell you whether the region being measured is even the right region. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:14:49 -04:00
<div class="panel" style="flex:0 1 190px">
<h2>teeth measurement</h2>
<div id="cv-teeth"></div>
<div class="legend" id="teethinfo"></div>
Teeth as an extracted blob contour, not a clipped band The band filled the mouth because a band is the wrong reduction: the bright region is a blob, and reading it as "everything above a line" throws the shape away. Extracting a contour reintroduces the vertex-correspondence problem that made me avoid it, but for a blob there is a way out. Radial sampling from the centroid along N fixed directions makes vertex k always mean "the extent in direction k": correspondence holds by construction, the count is fixed, and temporal smoothing cannot reorder anything. It also yields a star-shaped reduction, which suits flat colour. Tongue rejection, which the band had no way to express: - pixels red relative to their own brightness are dropped (teeth are neutral) - component choice is biased toward the top of the cavity, since area alone picks the tongue when the mouth is wide - separate inner and outer controls: cavity erode pulls the sampled region off the lip edge, blob grow/erode resizes the found blob Also: a knob wired in app.js but missing from index.html threw during wiring and left a blank page with nothing useful in the console - which is exactly what happened to teethDwell in the previous commit. el() now names the missing id, and window.onerror surfaces it in the status line. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:24:52 -04:00
<div class="legend">green = kept pixels · amber = extracted contour</div>
Fix teeth band filling the whole mouth Three causes, all of them mine: Otsu always returns a split, including on a homogeneous region - given a dark cavity with no teeth it invents a threshold and calls half the pixels bright. The gate is now the separation between the two class means, which is the only thing that says whether the split means anything. Coverage was the wrong signal: it is high both when the mouth is full of teeth and when the region is uniformly dark and Otsu has split noise. The row scan tracked the last qualifying row anywhere rather than where the run from the top stops, so one bright row near the bottom - a lit lower lip inside the ring - pushed the line to full height. It now breaks at the first failing row once the run has started. MediaPipe's inner lip landmarks sit slightly outside the real opening, so the sampled region included lip pixels, which are bright and sit exactly at the boundary where they do most damage. The ring is now eroded toward its centroid before sampling, with the amount exposed as a knob. Adds a diagnostic panel showing the sampled crop, pixels above threshold, and the resolved line, because tuning this from numbers alone does not tell you whether the region being measured is even the right region. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 15:14:49 -04:00
</div>
<div class="panel" style="flex:1 1 240px">
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<h2>palette</h2>
<div id="palette"></div>
<div class="legend" style="margin-top:12px">
Flat indexed fills, no antialiasing — the rasteriser writes palette
indices, the way <code>csd_render_poly</code> does.
</div>
</div>
</div>
<div class="panel">
Registered photo underlay as the plate reference The generated face oval was never going to be good enough to draw from: MediaPipe's face oval is the FACE boundary, cut at the hairline and excluding hair, ears, jaw and neck, so it is an egg by construction. Segmentation would give a real head outline but costs a 16MB model and per-frame inference for a shape that gets replaced by a drawing anyway. So the plate layer becomes switchable, and the useful modes are photographic: the source frame mapped into raster space through the same transform chain the contours go through. Registration is the whole point - the head sits still and a drawing traced from the underlay is already aligned to the mouth. An unregistered underlay would be decoration. - underlay.js: pixel->raster affine (a general affine, since MediaPipe normalises x by width and y by height), registered draw, palette posterise - plate modes: photo / photo dim / posterized / oval / oval+photo / none, B cycles - worksheet cells are registered composites rather than raw crops - Save frame 4x writes a 1280x800 PNG to draw on - selftest: FACE_OVAL simplicity, which was never asserted; a wrong ordering there reads as a lumpy plate rather than an obvious bowtie Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:57:59 -04:00
<h2>drawings needed — registered reference per kept frame, with the range it holds</h2>
roto: video -> take file builder with interactive tuning Analysis half of the pipeline in docs/roto-puppet.md. Stabilises a face out of a clip via a similarity fit on rigid landmarks, reduces the lip contour to a fixed vertex budget, selects sparse keys on velocity minima, and previews the result as flat indexed fills so timing can be judged without an Animator Pro render. - landmarks.js ordered lip/oval rings; slot position is vertex identity - mathutil.js closed-form 2D similarity, Procrustes mean, transform smoothing - pipeline.js stabilise -> subsample -> key-select - raster.js indexed scanline fill, no antialiasing - take.js take-file writer - selftest.js 29 assertions, incl. ring simplicity at every vertex budget Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-24 14:38:07 -04:00
<div id="sheet"></div>
</div>
</main>
<script type="module" src="./js/app.js"></script>
</body>
</html>
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