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<title>Observation lab · DVIDIA</title>
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<div class="shell">
<header class="topbar">
<div class="brand" aria-label="DVIDIA">
<svg width="36" height="36" viewBox="0 0 64 64" aria-hidden="true"><rect width="64" height="64" rx="16" fill="#20231f"/><g fill="#f8f7f3"><rect x="8" y="20" width="4.6" height="24" rx="1.2" opacity=".28"/><rect x="14.1" y="20" width="4.6" height="24" rx="1.2" opacity=".38"/><rect x="20.2" y="20" width="4.6" height="24" rx="1.2" opacity=".48"/><rect x="26.3" y="20" width="4.6" height="24" rx="1.2" opacity=".58"/><rect x="32.4" y="20" width="4.6" height="24" rx="1.2" opacity=".68"/><rect x="38.5" y="20" width="4.6" height="24" rx="1.2" opacity=".78"/><rect x="44.6" y="20" width="4.6" height="24" rx="1.2" opacity=".9"/></g><rect x="50.7" y="20" width="4.6" height="24" rx="1.2" fill="#7394ff"/></svg>
<div><div class="wordmark">DVIDIA</div><small>Applied physical AI</small></div>
</div>
<div class="local"><span class="dot" aria-hidden="true"></span><span>Local review · Footage stays here</span></div>
</header>
<main>
<div class="page-heading">
<div class="heading-copy"><div class="eyebrow">From footage to reviewed evidence</div><h1>Observation lab</h1><p id="episode-title">Connecting to your local episodes…</p></div>
<nav class="episode-nav" aria-label="Episode navigation"><span class="episode-count" id="episode-count">— / —</span><button id="previous" aria-label="Previous episode" disabled>←</button><button id="next" aria-label="Next episode" disabled>→</button></nav>
</div>
<div class="notice" id="error-notice" role="alert" hidden><p id="error-text"></p><button id="retry">Try again</button></div>
<details id="run-failures" class="failure-notice" hidden><summary id="failure-summary"></summary><ul id="failure-list"></ul></details>
<div class="workspace" id="workspace" aria-busy="true">
<div class="footage-column">
<section class="video-card" aria-label="Episode footage and spatial observations">
<div class="video-stage" id="video-stage">
<video id="video" preload="metadata" playsinline aria-label="Episode footage"></video>
<div id="video-empty" class="video-state"><svg width="40" height="40" viewBox="0 0 40 40" fill="none" aria-hidden="true"><rect x="5" y="8" width="30" height="24" rx="5" stroke="currentColor" stroke-width="1.5"/><path d="m17 15 9 5-9 5V15Z" stroke="currentColor" stroke-width="1.5"/></svg><strong id="video-empty-title">Your footage, ready for a closer look.</strong><p id="video-empty-text">Loading the local observation record.</p></div>
<div class="overlay" id="overlay" aria-hidden="true"></div>
<div class="video-tag" id="video-tag" hidden><span class="dot"></span><span id="video-tag-text">Sampled observations</span></div>
</div>
<div class="player-controls">
<button id="play" class="play-control" aria-label="Play episode" disabled>▶ Play</button>
<span id="time-readout" class="time-readout">0:00 / 0:00</span>
<span class="player-spacer"></span>
<label class="box-toggle"><input id="show-boxes" type="checkbox" checked> Boxes</label>
<label class="sr-only" for="speed">Playback speed</label><select id="speed" class="playback-speed"><option value="0.5">0.5×</option><option value="1" selected>1×</option><option value="1.5">1.5×</option><option value="2">2×</option></select>
</div>
</section>
<section class="timeline-card" aria-labelledby="timeline-heading">
<div class="section-head"><h2 id="timeline-heading">One shared timeline</h2><span class="small" id="box-summary">No sampled boxes yet</span></div>
<div class="seek-wrap"><label class="sr-only" for="seek">Seek episode in seconds</label><input id="seek" type="range" min="0" max="1" value="0" step="0.01" disabled></div>
<div class="timeline" aria-label="Timeline of raw observations and accepted draft events">
<div class="timeline-lane"><span class="lane-label">Raw model</span><div id="raw-track" class="lane-track"></div></div>
<div class="timeline-lane"><span class="lane-label">Accepted</span><div id="accepted-track" class="lane-track"></div></div>
<div class="timeline-ticks" id="timeline-ticks"><span>0:00</span><span>—</span><span>—</span><span>—</span></div>
</div>
<p class="timeline-note">Boxes are sampled detections. Hand boxes mark detected palms; overlap does not prove a grasp.</p>
</section>
<section class="raw-section" aria-labelledby="raw-heading">
<div class="section-head"><div><h2 id="raw-heading">Raw observations <span id="raw-count" class="count">0</span></h2><p>Original model output. Select an event to review.</p></div><button id="add-event" disabled>+ Add missed event</button></div>
<div id="raw-events" class="chips"></div>
<p id="raw-empty" class="empty">No observations loaded.</p>
<div id="manual-section" hidden><h3 style="margin-top:20px">Added by reviewer</h3><div id="manual-events" class="chips"></div></div>
</section>
</div>
<aside class="review-column" aria-label="Event review">
<section class="panel">
<div class="panel-head"><h2>Review the moment</h2><p>Watch, adjust, then make a decision.</p></div>
<div class="panel-body">
<p id="editor-empty" class="small">Select an observation or add an event the model missed.</p>
<form id="event-form" hidden>
<div class="editor-meta"><span id="event-origin" class="pill">Model observation</span><span id="decision-pill" class="pill pending">Pending</span></div>
<div class="field"><label class="label" for="event-label">Event label</label><input id="event-label" maxlength="240" required autocomplete="off"></div>
<div class="time-fields"><div class="field"><label class="label" for="event-start">Start · seconds</label><input id="event-start" type="number" min="0" step="any" required inputmode="decimal"></div><div class="field"><label class="label" for="event-end">End · seconds</label><input id="event-end" type="number" min="0" step="any" required inputmode="decimal"></div></div>
<p id="timing-help" class="field-help">Use the timeline to check the boundaries.</p>
<div class="decision-buttons"><button id="approve" type="button" aria-pressed="false">✓ Approve</button><button id="reject" type="button" aria-pressed="false">× Reject</button></div>
<button id="reset-decision" type="button" class="reset-decision" hidden>Return to pending</button>
<button id="remove-manual" type="button" class="reset-decision" hidden>Remove this new event</button>
<p class="original-note" id="original-note"></p>
</form>
</div>
</section>
<section class="panel">
<div class="panel-body">
<div class="section-head"><h2>Accepted events <span id="accepted-count" class="count">0</span></h2><span id="draft-pill" class="pill">Saved</span></div>
<p id="accepted-empty" class="small" style="margin-top:11px">Nothing accepted yet.</p><div id="accepted-events" class="accepted-list"></div>
<div class="outcome-field"><label class="label" for="outcome">Observed outcome</label><select id="outcome" disabled><option value="unknown">Unknown</option><option value="visible_completion">Visible completion</option><option value="incomplete">Incomplete</option></select><p class="field-help">A reviewer’s visual assessment of this episode.</p></div>
<label class="completion-check"><input id="review-complete" type="checkbox" disabled><span>I have reviewed every event.<br><span class="small" id="pending-count">No episode loaded</span></span></label>
<button id="save" class="primary save-button" disabled>Save revision</button><p id="save-message" class="save-message" role="status" aria-live="polite">Waiting for an episode</p>
<button id="download" class="download-button" disabled>↓ Download saved review</button>
</div>
</section>
</aside>
<details class="evidence"><summary>Source, analysis and limitations</summary><dl id="provenance"></dl><p class="small">Accuracy has not been measured on this episode. An accepted visual event is not evidence of robot skill or task success.</p></details>
</div>
</main>
<footer class="footer"><span>DVIDIA · Observation pilot</span><span>Human review required · Accuracy not measured · Robot capability not evaluated</span></footer>
</div>
<dialog id="leave-dialog" aria-labelledby="leave-heading"><h2 id="leave-heading">Keep your review changes?</h2><p>Your current edits have not been saved to a revision.</p><div class="dialog-actions"><button id="stay">Keep reviewing</button><button id="discard">Discard edits</button><button id="save-leave" class="primary">Save & continue</button></div></dialog>
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(() => {
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function renderTimeline() {
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setText('draft-pill',state.dirty ? 'Unsaved draft' : 'Saved');
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const confidence = raw && Number.isFinite(raw.confidence) ? ` · Detector score ${raw.confidence.toFixed(2)} (uncalibrated)` : '';
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if (!id) return;
if (id !== state.selected && !captureEditor()) { $('event-form').reportValidity(); return; }
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Object.assign(event,{label,start_seconds:start,end_seconds:end});
if (changed) { state.complete = false; $('review-complete').checked = false; markDirty(); renderEvents(); }
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function renderProvenance() {
const episode = state.episode, source = episode.source || {}, recipe = episode.recipe || {}, metrics = episode.metrics || {};
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const oldTime = $('video').currentTime || 0, oldId = state.episode?.id;
const raw = Array.isArray(episode.observations) ? episode.observations : [];
episode.observations = raw;
const existing = Array.isArray(episode.review?.events) ? episode.review.events : [];
state.events = copy(existing);
for (const item of raw) if (!state.events.some(event => event.observation_id === item.id || event.id === item.id)) state.events.push({id:item.id,observation_id:item.id,label:item.label || '',start_seconds:finite(item.start_seconds),end_seconds:finite(item.end_seconds),decision:'pending'});
state.events.forEach(event => { if (!['pending','approved','rejected'].includes(event.decision)) event.decision = 'pending'; });
state.episode = episode; state.index = index; state.outcome = ['unknown','visible_completion','incomplete'].includes(episode.review?.outcome) ? episode.review.outcome : 'unknown'; state.complete = episode.review?.status === 'reviewed'; state.dirty = false;
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setText('video-tag-text',episode.source?.kind === 'synthetic' ? 'Synthetic fixture · Sampled detections' : 'Sampled model detections');
$('outcome').value = state.outcome; $('review-complete').checked = state.complete;
const url = episode.video_url;
if (typeof url === 'string' && url) {
const parsed = new URL(url,location.href);
if (parsed.origin !== location.origin) throw new Error('This local review only plays footage served by the local episode server.');
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else if (keepTime) $('video').currentTime = oldTime;
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}
async function loadEpisode(index) {
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try { const episode = await api.episode(state.episodes[index].id); acceptEpisode(episode,index,false); }
catch (err) { error(err.message); }
finally { setBusy(false); }
}
async function initialize() {
setBusy(true); clearError();
try {
const result = await api.list(); state.episodes = Array.isArray(result) ? result : result.episodes || [];
const failures = Array.isArray(result.failures) ? result.failures : [];
$('run-failures').hidden = failures.length === 0;
setText('failure-summary',`${failures.length} ${failures.length === 1 ? 'episode could' : 'episodes could'} not be analyzed · View failures`);
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const wanted = new URLSearchParams(location.search).get('episode'); const index = Math.max(0,state.episodes.findIndex(episode => episode.id === wanted));
const episode = await api.episode(state.episodes[index].id); acceptEpisode(episode,index,false);
} catch (err) { error(err.message); setText('episode-title','The local observation server is unavailable.'); setText('video-empty-title','Unable to load this episode.'); setText('video-empty-text','Check the local server, then try again.'); }
finally { setBusy(false); }
}
async function save() {
if (!captureEditor()) { $('event-form').reportValidity(); return false; }
if (!state.episode || state.saving) return false;
const invalid = state.events.find(event => !event.label.trim() || !Number.isFinite(event.start_seconds) || !Number.isFinite(event.end_seconds) || event.start_seconds < 0 || event.end_seconds <= event.start_seconds || event.end_seconds > duration() + .01);
if (invalid) { selectEvent(invalid.id,false); error('Check each event label and timing. Events must fit within this episode.'); return false; }
if (state.complete && state.events.some(event => event.decision === 'pending')) { error('Decide on every event before marking this review complete. You can save an unfinished review with the checkbox cleared.'); return false; }
state.saving = true; clearError(); updateControls();
try {
await api.save(state.episode.id,{base_revision:state.episode.review?.revision ?? 0,events:copy(state.events),outcome:state.outcome,status:state.complete ? 'reviewed' : 'in_review'});
const episode = await api.episode(state.episode.id); acceptEpisode(episode,state.index,true);
setText('save-message',`Saved revision ${episode.review?.revision ?? 0} · ${state.complete ? 'Review complete' : 'Review in progress'}`); return true;
} catch (err) { error(err.message); setText('save-message','Could not verify a saved revision · Edits kept here'); return false; }
finally { state.saving = false; updateControls(); }
}
function navigate(index) {
if (index < 0 || index >= state.episodes.length) return;
captureEditor();
if (state.dirty) { state.targetIndex = index; $('leave-dialog').showModal(); return; }
loadEpisode(index);
}
function fitOverlay() {
const video = $('video'), stage = $('video-stage'), ratio = video.videoWidth / video.videoHeight;
if (!Number.isFinite(ratio) || !ratio) { $('overlay').replaceChildren(); return; }
let width = stage.clientWidth, height = width / ratio;
if (height > stage.clientHeight) { height = stage.clientHeight; width = height * ratio; }
Object.assign($('overlay').style,{width:`${width}px`,height:`${height}px`,left:`${(stage.clientWidth-width)/2}px`,top:`${(stage.clientHeight-height)/2}px`});
}
function renderBoxes() {
const overlay = $('overlay'); overlay.replaceChildren();
if (!state.episode || !$('show-boxes').checked) { setText('box-summary',$('show-boxes').checked ? 'No sampled boxes yet' : 'Boxes hidden'); return; }
const time = $('video').currentTime || 0, samples = [];
for (const raw of state.episode.observations) {
const boxes = Array.isArray(raw.boxes) ? raw.boxes : [];
const nearest = boxes.reduce((best,box) => Math.abs(finite(box.time_seconds) - time) < Math.abs(finite(best?.time_seconds ?? -10000) - time) ? box : best,null);
if (!nearest || Math.abs(finite(nearest.time_seconds) - time) > .25) continue;
for (const box of boxes.filter(box => Math.abs(finite(box.time_seconds) - finite(nearest.time_seconds)) < .001)) samples.push({...box,label:box.label || raw.label});
}
const seen = new Set(); let visible = 0;
for (const sample of samples) {
if (!Array.isArray(sample.xyxy) || sample.xyxy.length !== 4 || !sample.xyxy.every(Number.isFinite)) continue;
const [x1,y1,x2,y2] = sample.xyxy.map(value => Math.min(1,Math.max(0,value))); if (x2 <= x1 || y2 <= y1) continue;
const key = [x1,y1,x2,y2,sample.label].join('|'); if (seen.has(key)) continue; seen.add(key);
const box = node('div',undefined,`bounding-box${sample.accepted ? ' accepted' : ''}${y1 < .1 ? ' near-top' : ''}`);
Object.assign(box.style,{left:`${x1*100}%`,top:`${y1*100}%`,width:`${(x2-x1)*100}%`,height:`${(y2-y1)*100}%`}); box.append(node('span',sample.label || 'Detected object','box-label')); overlay.append(box); visible++;
}
setText('box-summary',visible ? `${visible} sampled ${visible === 1 ? 'box' : 'boxes'} · ${stamp(time)}` : 'No sampled boxes at this time');
}
function updatePlayback() {
const video = $('video'), total = duration(), time = video.currentTime || 0;
setText('time-readout',`${stamp(time)} / ${stamp(total)}`); $('seek').max = total || 1; $('seek').value = time; $('seek').disabled = !total; $('seek').setAttribute('aria-valuetext',`${precise(time)} of ${precise(total)}`);
$('play').disabled = !video.getAttribute('src') || !total;
setText('play',video.paused ? '▶ Play' : 'Ⅱ Pause'); $('play').setAttribute('aria-label',video.paused ? 'Play episode' : 'Pause episode');
for (const cursor of document.querySelectorAll('.timeline-cursor')) cursor.style.left = `${total ? Math.min(100,time / total * 100) : 0}%`;
renderBoxes();
}
$('play').addEventListener('click',async () => { const video = $('video'); if (video.paused) { try { await video.play(); } catch { error('This browser could not play the local video. The observation record is still available for review.'); } } else video.pause(); });
$('seek').addEventListener('input',() => { $('video').currentTime = finite($('seek').value); updatePlayback(); });
$('speed').addEventListener('change',() => { $('video').playbackRate = finite($('speed').value); });
$('show-boxes').addEventListener('change',renderBoxes);
for (const name of ['timeupdate','play','pause','ended']) $('video').addEventListener(name,updatePlayback);
let frameRequest = null;
const frameVideo = $('video');
function stopFrames() { if (frameRequest !== null) { if (frameVideo.cancelVideoFrameCallback) frameVideo.cancelVideoFrameCallback(frameRequest); else cancelAnimationFrame(frameRequest); frameRequest = null; } }
function nextFrame() { if (frameVideo.paused || frameVideo.ended) { frameRequest = null; return; } renderBoxes(); frameRequest = frameVideo.requestVideoFrameCallback ? frameVideo.requestVideoFrameCallback(nextFrame) : requestAnimationFrame(nextFrame); }
frameVideo.addEventListener('play',() => { stopFrames(); nextFrame(); }); frameVideo.addEventListener('pause',stopFrames); frameVideo.addEventListener('ended',stopFrames);
$('video').addEventListener('loadedmetadata',() => { fitOverlay(); renderTimeline(); updatePlayback(); });
$('video').addEventListener('error',() => { if (!$('video').getAttribute('src')) return; $('video-empty').hidden = false; setText('video-empty-title','This video could not be played.'); setText('video-empty-text','Check that the local episode contains a browser-compatible video.'); $('play').disabled = true; });
if ('ResizeObserver' in window) new ResizeObserver(() => { fitOverlay(); renderBoxes(); }).observe($('video-stage')); else window.addEventListener('resize',fitOverlay);
$('event-form').addEventListener('submit',event => event.preventDefault());
for (const id of ['event-label','event-start','event-end']) { $(id).addEventListener('input',() => { if (!state.dirty) markDirty(); state.complete = false; $('review-complete').checked = false; }); $(id).addEventListener('change',captureEditor); }
$('approve').addEventListener('click',() => decide('approved')); $('reject').addEventListener('click',() => decide('rejected')); $('reset-decision').addEventListener('click',() => decide('pending'));
$('remove-manual').addEventListener('click',() => {
const event = selected(); if (!event || observation(event) || (state.episode.review?.events || []).some(saved => saved.id === event.id)) return;
state.events = state.events.filter(item => item.id !== event.id); state.selected = state.events[0]?.id || null;
state.complete = false; $('review-complete').checked = false; markDirty(); renderEvents(); renderEditor();
});
$('add-event').addEventListener('click',() => {
if (!captureEditor()) { $('event-form').reportValidity(); return; }
const total = duration(); if (total <= 0) { error('The episode duration is unavailable. Load playable footage before adding an event.'); return; }
const start = Math.min(Math.max(0,total-.01),Number(($('video').currentTime || 0).toFixed(2))), id = `manual-${crypto.randomUUID()}`;
state.events.push({id,observation_id:null,label:'',start_seconds:start,end_seconds:Math.min(total,Number((start+1).toFixed(2))),decision:'pending'});
state.complete = false; $('review-complete').checked = false; state.selected = id; markDirty(); renderEvents(); renderEditor(); $('event-label').focus();
});
$('outcome').addEventListener('change',() => { state.outcome = $('outcome').value; markDirty(); });
$('review-complete').addEventListener('change',() => { state.complete = $('review-complete').checked; markDirty(); });
$('save').addEventListener('click',save);
$('download').addEventListener('click',() => {
if (!state.episode || state.dirty) return;
const receipt = {episode_id:state.episode.id,source_sha256:state.episode.source?.sha256 || null,review:state.episode.review || {revision:0,status:'unreviewed',outcome:'unknown',events:[]}};
const url = URL.createObjectURL(new Blob([JSON.stringify(receipt,null,2)+'\n'],{type:'application/json'})), link = node('a'); link.href = url; link.download = `${String(state.episode.id).replace(/[^a-z0-9_-]/gi,'-')}.review-r${state.episode.review?.revision ?? 0}.json`; document.body.append(link); link.click(); link.remove(); setTimeout(() => URL.revokeObjectURL(url),1000);
});
$('previous').addEventListener('click',() => navigate(state.index-1)); $('next').addEventListener('click',() => navigate(state.index+1));
$('stay').addEventListener('click',() => $('leave-dialog').close()); $('discard').addEventListener('click',() => { $('leave-dialog').close(); loadEpisode(state.targetIndex); }); $('save-leave').addEventListener('click',async () => { if (await save()) { $('leave-dialog').close(); loadEpisode(state.targetIndex); } });
$('retry').addEventListener('click',() => { if (state.episode) clearError(); else initialize(); });
window.addEventListener('beforeunload',event => { if (state.dirty) { event.preventDefault(); event.returnValue = ''; } });
initialize();
})();
</script>
</body>
</html>
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