HandDiffuse 3aaa125c73ea3ecc batch mano20-docs-v2-half-speed

README.md

@@ -14,7 +14,7 @@ size_categories:
 
 This edition contains 115 paired episodes, 255,845 two-hand timesteps and 5,505 processed videos referenced by the existing accepted camera/time mappings. It also contains 86 separate historical motion-only groups (172 NPY files, 314,958 two-hand timesteps) under `motion_only/`. Left and right hands are counted together once per timestep. Historical group names do not establish independent capture identity.
 
-Videos are face-mosaicked, re-encoded as H.264 and contain no audio stream. Dimensions, decoded frame count and every presentation timestamp are checked against the originals. Selected motion arrays are unchanged. Original calibration values and namespace/ID bindings are preserved. Known excluded or unmapped cameras and nine unresolved paired candidates are absent. BEAT and seven unknown-origin groups are excluded. MANO model weights are not distributed.
+Videos are face-mosaicked, re-encoded as H.264 and contain no audio stream. Dimensions and decoded frame count are preserved. Native-speed outputs retain source timestamps; new 4K60 half-speed outputs are checked against exactly doubled source timestamps, preserving every frame index. Selected motion arrays are unchanged. Original calibration values and namespace/ID bindings are preserved. Known excluded or unmapped cameras and nine unresolved paired candidates are absent. BEAT and seven unknown-origin groups are excluded. MANO model weights are not distributed.
 
 `episodes.json` indexes the paired data. `view_scope.json` states the evidence carried for each retained camera: calibration/time mapping acceptance is not exhaustive visual-quality certification. The 115 previously selected single views have carried sampled review records; other views are retained as processed mapped views with the existing documented limitations. No new frame-map integrity audit is performed during this preparation.
 
@@ -26,7 +26,7 @@ Public availability does not assert an open dataset license. A formal license an
 
 This repository is being populated incrementally. The planned total is 5,505 videos; consult `upload_status.json` for verified uploaded counts. Original unmasked videos are never uploaded here. A `.privacy.json` sidecar beside each processed video records source/output hashes, encoding and validation.
 
-Face detection runs every five frames using YuNet and CenterFace. Detected face boxes are padded and their locations and sizes interpolated for masking every output frame. Visually reviewed adjustments may cover detector misses or remove hand/equipment false positives. Boundary positions can be held through occlusions. Sparse detection and sampled visual review are not a mathematical guarantee against all missed faces. Hand protection takes precedence: separate convex hulls of recorded MANO projections are expanded outward by 20 original-image pixels. Original source pixels are restored inside that region while face mosaic continues outside. Faces can remain visible where they overlap protected hands. Isolated unmapped boundary frames may remain original, as recorded in each sidecar. Unreviewed clips retain all detector tracks; automated checks are distinguished from sampled visual reviews in each sidecar. No identity recognition is performed.
+Face detection uses YuNet and CenterFace every five frames for native-speed videos, or every ten frames for new 4K60 half-speed videos. Detected face boxes are padded and their locations and sizes interpolated for masking every output frame. Visually reviewed adjustments may cover detector misses or remove hand/equipment false positives. Boundary positions can be held through occlusions. Sparse detection and sampled visual review are not a mathematical guarantee against all missed faces. Hand protection takes precedence: separate convex hulls of recorded MANO projections are expanded outward by 20 original-image pixels. Original source pixels are restored inside that region while face mosaic continues outside. Faces can remain visible where they overlap protected hands. Isolated unmapped boundary frames may remain original, as recorded in each sidecar. Unreviewed clips retain all detector tracks; automated checks are distinguished from sampled visual reviews in each sidecar. No identity recognition is performed.
 
 ## Episode layout
 
@@ -163,3 +163,7 @@ Remaining curation limitations include missing multi-view source groups, unresol
 ## Citation and licensing
 
 A dataset license and formal citation have not been supplied. Public availability does not by itself grant an open license. No license is invented by this preparation. Keep source identities and machine-specific curation paths out of the public package.
+
+## Per-video playback clocks
+
+From the half-speed processing update onward, remaining 4K videos recorded near 60fps retain every frame and play at half speed (60 to30fps;59.94 to29.97fps). Duration doubles. Already-published native-speed files retain their recorded policy; always inspect each video's `.privacy.json`. The original `frames.csv`, motion arrays, and calibration remain source-clock evidence. Frame indices are unchanged. For half-speed output, multiply source PTS/time by2, or read the accompanying `<video>.playback_frames.csv`, which explicitly binds source/output PTS and the unchanged MANO row indices. No motion data is resampled. New face detection samples every10 retained frames with interpolation; sideways supplemental detection remains every30 frames.

privacy_policy.json

@@ -1,10 +1,21 @@
 {
-  "algorithm": "mano20-alpha-sparse5-v1",
+  "algorithms": [
+    "mano20-alpha-sparse5-v1",
+    "mano20-alpha-half-speed-sparse10-v2"
+  ],
   "hand_padding_pixels": 20,
-  "detection_stride": 5,
+  "detection_stride": {
+    "native_speed": 5,
+    "4k60_half_speed": 10
+  },
   "hand_priority": true,
   "audio_streams": 0,
-  "frame_dimensions_and_pts_preserved": true,
+  "frame_dimensions_count_and_indices_preserved": true,
+  "timestamp_multiplier": {
+    "native_speed": 1,
+    "4k60_half_speed": 2
+  },
+  "original_frame_maps_use_source_clock": true,
   "source_videos_uploaded": false,
   "automatic_checks_are_not_exhaustive_visual_review": true
 }