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- import numpy as np
- import copy
- yaw_idx_in_mediapipe_mesh = [356, 454, 361, 288, 397, 379, 378, 377, 152, 148, 149, 150, 172,58, 132, 234, 127]
- brow_idx_in_mediapipe_mesh = [70, 63, 105, 66, 107, 336, 296, 334, 293, 300]
- nose_idx_in_mediapipe_mesh = [6, 5, 1, 2, 129, 240, 2, 460, 358]
- eye_idx_in_mediapipe_mesh = [33, 160, 158, 133, 153, 144, 362, 385, 387, 263, 373, 380]
- mouth_idx_in_mediapipe_mesh = [78,191,80,81,82,13,312,311,310,415,308,324,318,402,317,14,87,178,88,95]
- lm68_idx_in_mediapipe_mesh = yaw_idx_in_mediapipe_mesh + brow_idx_in_mediapipe_mesh + nose_idx_in_mediapipe_mesh + eye_idx_in_mediapipe_mesh + mouth_idx_in_mediapipe_mesh
- def mediapipe_lm478_to_face_alignment_lm68(lm478, H, W, return_2d=True):
- """
- lm478: [B, 478, 3] or [478,3]
- """
- lm478 = copy.deepcopy(lm478)
- lm478[..., 0] *= W
- lm478[..., 1] *= H
- n_dim = 2 if return_2d else False
- if lm478.ndim == 2:
- return lm478[lm68_idx_in_mediapipe_mesh, :n_dim].astype(np.int16)
- elif lm478.ndim == 3:
- return lm478[:, lm68_idx_in_mediapipe_mesh, :n_dim].astype(np.int16)
- else:
- raise ValueError("input lm478 ndim should in 2 or 3!")
- def mediapipe_lm478_to_lm68_3d(lm478):
- """
- lm478: [B, 478, 3] or [478,3]
- also works for lm468
- """
- if lm478.ndim == 2:
- return lm478[lm68_idx_in_mediapipe_mesh]
- elif lm478.ndim == 3:
- return lm478[:, lm68_idx_in_mediapipe_mesh]
- else:
- raise ValueError("input lm478 ndim should in 2 or 3!")
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