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9757291 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 | """Canonical joint name mappings for 6 human motion capture datasets.
Maps raw joint names from each dataset to standardised lowercase English
anatomical names so that the same body part always receives the same
canonical label regardless of data source.
Generated: 2026-03-18
Datasets: humanml3d, lafan1, 100style, bandai_namco, cmu_mocap, mixamo
"""
from __future__ import annotations
# ---------------------------------------------------------------------------
# Canonical maps: dataset_id -> { raw_name: canonical_name }
# ---------------------------------------------------------------------------
CANONICAL_MAPS: dict[str, dict[str, str]] = {
# ------------------------------------------------------------------
# HumanML3D (22 joints)
# Already uses snake_case descriptive names.
# ------------------------------------------------------------------
"humanml3d": {
"pelvis": "pelvis",
"left_hip": "left upper leg",
"right_hip": "right upper leg",
"spine1": "spine lower",
"left_knee": "left lower leg",
"right_knee": "right lower leg",
"spine2": "spine mid",
"left_ankle": "left foot",
"right_ankle": "right foot",
"spine3": "spine upper",
"left_foot": "left toe",
"right_foot": "right toe",
"neck": "neck",
"left_collar": "left collar",
"right_collar": "right collar",
"head": "head",
"left_shoulder": "left upper arm",
"right_shoulder": "right upper arm",
"left_elbow": "left forearm",
"right_elbow": "right forearm",
"left_wrist": "left hand",
"right_wrist": "right hand",
},
# ------------------------------------------------------------------
# LaFAN1 (22 joints)
# BVH-style CamelCase names.
# ------------------------------------------------------------------
"lafan1": {
"Hips": "pelvis",
"LeftUpLeg": "left upper leg",
"LeftLeg": "left lower leg",
"LeftFoot": "left foot",
"LeftToe": "left toe",
"RightUpLeg": "right upper leg",
"RightLeg": "right lower leg",
"RightFoot": "right foot",
"RightToe": "right toe",
"Spine": "spine lower",
"Spine1": "spine mid",
"Spine2": "spine upper",
"Neck": "neck",
"Head": "head",
"LeftShoulder": "left collar",
"LeftArm": "left upper arm",
"LeftForeArm": "left forearm",
"LeftHand": "left hand",
"RightShoulder": "right collar",
"RightArm": "right upper arm",
"RightForeArm": "right forearm",
"RightHand": "right hand",
},
# ------------------------------------------------------------------
# 100STYLE (23 joints)
# Uses Chest/Chest2/Chest3/Chest4 for spine chain.
# ------------------------------------------------------------------
"100style": {
"Hips": "pelvis",
"Chest": "spine lower",
"Chest2": "spine mid",
"Chest3": "spine upper",
"Chest4": "chest",
"Neck": "neck",
"Head": "head",
"RightCollar": "right collar",
"RightShoulder": "right upper arm",
"RightElbow": "right forearm",
"RightWrist": "right hand",
"LeftCollar": "left collar",
"LeftShoulder": "left upper arm",
"LeftElbow": "left forearm",
"LeftWrist": "left hand",
"RightHip": "right upper leg",
"RightKnee": "right lower leg",
"RightAnkle": "right foot",
"RightToe": "right toe",
"LeftHip": "left upper leg",
"LeftKnee": "left lower leg",
"LeftAnkle": "left foot",
"LeftToe": "left toe",
},
# ------------------------------------------------------------------
# Bandai-Namco (22 joints)
# Has an explicit "joint_Root" above Hips. Uses _L / _R suffix.
# ------------------------------------------------------------------
"bandai_namco": {
"joint_Root": "root",
"Hips": "pelvis",
"Spine": "spine lower",
"Chest": "spine upper",
"Neck": "neck",
"Head": "head",
"Shoulder_L": "left collar",
"UpperArm_L": "left upper arm",
"LowerArm_L": "left forearm",
"Hand_L": "left hand",
"Shoulder_R": "right collar",
"UpperArm_R": "right upper arm",
"LowerArm_R": "right forearm",
"Hand_R": "right hand",
"UpperLeg_L": "left upper leg",
"LowerLeg_L": "left lower leg",
"Foot_L": "left foot",
"Toes_L": "left toe",
"UpperLeg_R": "right upper leg",
"LowerLeg_R": "right lower leg",
"Foot_R": "right foot",
"Toes_R": "right toe",
},
# ------------------------------------------------------------------
# CMU MoCap (31 joints)
# Has extra hip-joint helpers, dual-neck, finger stubs, thumb stubs.
# ------------------------------------------------------------------
"cmu_mocap": {
"Hips": "pelvis",
"LHipJoint": "left hip joint",
"LeftUpLeg": "left upper leg",
"LeftLeg": "left lower leg",
"LeftFoot": "left foot",
"LeftToeBase": "left toe",
"RHipJoint": "right hip joint",
"RightUpLeg": "right upper leg",
"RightLeg": "right lower leg",
"RightFoot": "right foot",
"RightToeBase": "right toe",
"LowerBack": "spine lower",
"Spine": "spine mid",
"Spine1": "spine upper",
"Neck": "neck lower",
"Neck1": "neck",
"Head": "head",
"LeftShoulder": "left collar",
"LeftArm": "left upper arm",
"LeftForeArm": "left forearm",
"LeftHand": "left hand",
"LeftFingerBase": "left finger base",
"LeftHandIndex1": "left index 1",
"LThumb": "left thumb",
"RightShoulder": "right collar",
"RightArm": "right upper arm",
"RightForeArm": "right forearm",
"RightHand": "right hand",
"RightFingerBase": "right finger base",
"RightHandIndex1": "right index 1",
"RThumb": "right thumb",
},
# ------------------------------------------------------------------
# Mixamo (67 joints)
# "mixamorig:" prefix. Full finger chains (4 joints each, 5 fingers
# per hand). Separate eye joints. Toe-end markers.
# ------------------------------------------------------------------
"mixamo": {
"mixamorig:Hips": "pelvis",
"mixamorig:Spine": "spine lower",
"mixamorig:Spine1": "spine mid",
"mixamorig:Spine2": "spine upper",
"mixamorig:Neck": "neck",
"mixamorig:Head": "head",
"mixamorig:HeadTop_End": "head top",
"LeftEye": "left eye",
"RightEye": "right eye",
# -- Left arm --
"mixamorig:LeftShoulder": "left collar",
"mixamorig:LeftArm": "left upper arm",
"mixamorig:LeftForeArm": "left forearm",
"mixamorig:LeftHand": "left hand",
# -- Left thumb --
"mixamorig:LeftHandThumb1": "left thumb 1",
"mixamorig:LeftHandThumb2": "left thumb 2",
"mixamorig:LeftHandThumb3": "left thumb 3",
"mixamorig:LeftHandThumb4": "left thumb 4",
# -- Left index --
"mixamorig:LeftHandIndex1": "left index 1",
"mixamorig:LeftHandIndex2": "left index 2",
"mixamorig:LeftHandIndex3": "left index 3",
"mixamorig:LeftHandIndex4": "left index 4",
# -- Left middle --
"mixamorig:LeftHandMiddle1": "left middle 1",
"mixamorig:LeftHandMiddle2": "left middle 2",
"mixamorig:LeftHandMiddle3": "left middle 3",
"mixamorig:LeftHandMiddle4": "left middle 4",
# -- Left ring --
"mixamorig:LeftHandRing1": "left ring 1",
"mixamorig:LeftHandRing2": "left ring 2",
"mixamorig:LeftHandRing3": "left ring 3",
"mixamorig:LeftHandRing4": "left ring 4",
# -- Left pinky --
"mixamorig:LeftHandPinky1": "left pinky 1",
"mixamorig:LeftHandPinky2": "left pinky 2",
"mixamorig:LeftHandPinky3": "left pinky 3",
"mixamorig:LeftHandPinky4": "left pinky 4",
# -- Right arm --
"mixamorig:RightShoulder": "right collar",
"mixamorig:RightArm": "right upper arm",
"mixamorig:RightForeArm": "right forearm",
"mixamorig:RightHand": "right hand",
# -- Right thumb --
"mixamorig:RightHandThumb1": "right thumb 1",
"mixamorig:RightHandThumb2": "right thumb 2",
"mixamorig:RightHandThumb3": "right thumb 3",
"mixamorig:RightHandThumb4": "right thumb 4",
# -- Right index --
"mixamorig:RightHandIndex1": "right index 1",
"mixamorig:RightHandIndex2": "right index 2",
"mixamorig:RightHandIndex3": "right index 3",
"mixamorig:RightHandIndex4": "right index 4",
# -- Right middle --
"mixamorig:RightHandMiddle1": "right middle 1",
"mixamorig:RightHandMiddle2": "right middle 2",
"mixamorig:RightHandMiddle3": "right middle 3",
"mixamorig:RightHandMiddle4": "right middle 4",
# -- Right ring --
"mixamorig:RightHandRing1": "right ring 1",
"mixamorig:RightHandRing2": "right ring 2",
"mixamorig:RightHandRing3": "right ring 3",
"mixamorig:RightHandRing4": "right ring 4",
# -- Right pinky --
"mixamorig:RightHandPinky1": "right pinky 1",
"mixamorig:RightHandPinky2": "right pinky 2",
"mixamorig:RightHandPinky3": "right pinky 3",
"mixamorig:RightHandPinky4": "right pinky 4",
# -- Left leg --
"mixamorig:LeftUpLeg": "left upper leg",
"mixamorig:LeftLeg": "left lower leg",
"mixamorig:LeftFoot": "left foot",
"mixamorig:LeftToeBase": "left toe",
"mixamorig:LeftToe_End": "left toe end",
# -- Right leg --
"mixamorig:RightUpLeg": "right upper leg",
"mixamorig:RightLeg": "right lower leg",
"mixamorig:RightFoot": "right foot",
"mixamorig:RightToeBase": "right toe",
"mixamorig:RightToe_End": "right toe end",
},
}
# ---------------------------------------------------------------------------
# Convenience helpers
# ---------------------------------------------------------------------------
def get_canonical_names(joint_names: list[str], dataset_id: str) -> list[str]:
"""Map a list of raw joint names to their canonical equivalents.
Parameters
----------
joint_names : list[str]
Raw joint names exactly as they appear in the dataset's skeleton.npz.
dataset_id : str
One of the keys in ``CANONICAL_MAPS`` (e.g. ``"humanml3d"``).
Returns
-------
list[str]
Canonical names in the same order as *joint_names*.
Raises
------
KeyError
If *dataset_id* is not recognised or a raw joint name has no mapping.
"""
if dataset_id not in CANONICAL_MAPS:
raise KeyError(
f"Unknown dataset_id '{dataset_id}'. "
f"Available: {sorted(CANONICAL_MAPS.keys())}"
)
mapping = CANONICAL_MAPS[dataset_id]
canonical: list[str] = []
for name in joint_names:
if name not in mapping:
raise KeyError(
f"Joint '{name}' has no canonical mapping in dataset "
f"'{dataset_id}'. Mapped joints: {sorted(mapping.keys())}"
)
canonical.append(mapping[name])
return canonical
def get_all_canonical_names() -> set[str]:
"""Return the full set of unique canonical names across all datasets."""
names: set[str] = set()
for mapping in CANONICAL_MAPS.values():
names.update(mapping.values())
return names
def verify_all_datasets() -> dict[str, list[str]]:
"""Load every skeleton.npz and confirm that all raw names have mappings.
Returns a dict ``{dataset_id: [canonical_names]}`` on success.
Raises ``KeyError`` if any raw name is unmapped.
"""
import numpy as np
from pathlib import Path
base = Path(__file__).resolve().parents[2] / "data" / "processed"
result: dict[str, list[str]] = {}
for ds_id in CANONICAL_MAPS:
skel = np.load(str(base / ds_id / "skeleton.npz"), allow_pickle=True)
raw_names = [str(n) for n in skel["joint_names"]]
result[ds_id] = get_canonical_names(raw_names, ds_id)
return result
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