ZRY000/test-data-20261023

Dataset structure

Each sample contains one full RGB image, one metric depth image, and one serialized annotation dictionary with four hand entries.

Directory layout

data/
  train/*.tar
  val/*.tar
  test/*.tar
remainders/
  train/
  val/
  test/
metadata/
  coverage_plan.json
  source_attribution.json
  shards/{train,val,test}/*.json
  PROCESSING_COMPLETE.json
preview.jpg

data/ contains complete shards. remainders/ contains the final samples that do not fill a complete shard. metadata/ contains coverage information, per-shard sample ranges, source-frame identifiers, recording distributions, content hashes, and provenance. PROCESSING_COMPLETE.json is added when local coverage checks are complete. preview.jpg is a visualization example.

TAR members

Every TAR contains exactly 1024 samples, with three members per sample:

00000000.data.pyd
00000000.depth.png
00000000.jpg
00000001.data.pyd
00000001.depth.png
00000001.jpg
...

Sample IDs are globally unique eight-digit numbers starting at 00000000. Shard filenames also use eight-digit numbers. Images from multiple recordings are mixed within each shard, while train/val/test directories remain separate.

Component	Format	Contents
.jpg	RGB JPEG, 960×540	One full image
.depth.png	Single-channel uint16 PNG	Depth in millimetres; multiply by 0.001 for metres
.data.pyd	Portable protocol-4 pickle	One schema-v2 annotation dictionary using built-in values

Annotation dictionary

Field	Structure
schema_version	Integer, 2
frame_uid	Original recording/view/frame identifier
image_size	[height, width]
camera	Pinhole intrinsics K and calibration metadata
depth	Unit, metric scale, invalid code, depth type, and provenance
joints_3d_frame	camera
joints_3d_unit	m
annotations_complete	Boolean availability/completeness indicator
hands	List of four hand dictionaries
split	train, val, or test

Each hand dictionary contains:

Field	Shape or type
right	Boolean side indicator
betas	10 shape coefficients
hand_pose	48 axis-angle values: global orientation plus 15 local joint rotations
cam_t	Camera-frame translation, 3 values in metres
keypoints_2d	21×3: pixel coordinates and validity
keypoints_3d	21×4: camera-frame coordinates in metres and validity
has_betas, has_hand_pose	Target availability flags
Additional metadata	Role, subject identifier, parameter provenance, and fitting residuals

Remainder members

Each remainder directory stores the same three components as individual files and a manifest.json mapping sample IDs to original frame identifiers. Remainder IDs follow the complete shards. Samples are neither dropped nor duplicated to fill a TAR.