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https://github.com/gosticks/body-pose-animation.git
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45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
import torch
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import torch.nn as nn
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import numpy as np
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class AngleClipper(nn.Module):
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def __init__(
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self,
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device=torch.device('cpu'),
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dtype=torch.float32,
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angle_idx=[24, 25, 26, 10, 11, 13, 14, 9, 1, 56, 53, 12, 9, 37, 40],
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# directions=[-1, 1, 1, 1],
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weight=1
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):
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super(AngleClipper, self).__init__()
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self.has_parameters = False
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# angles determined based on
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# angles currently only work with SMPL-X since indices may differ
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angles_idx = torch.tensor(
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angle_idx, dtype=torch.int64).to(device=device)
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self.register_buffer("angle_idx",
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angles_idx)
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# # list of proposed directions
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limit = torch.tensor(np.pi, dtype=dtype).to(device=device)
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self.register_buffer("limit",
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limit)
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# create buffer for weights
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self.register_buffer(
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"weight",
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torch.tensor(weight, dtype=dtype).to(device=device)
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)
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def forward(self, pose, joints, points, keypoints, raw_output):
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angles = pose[:, self.angle_idx]
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penalty = angles[torch.abs(angles) > self.limit]
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# get relevant angles
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return penalty.pow(2).sum() * self.weight
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