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YOLOv8 无人机追踪

在在自制数据集上上进行微调,实现无人机追踪,并且通过channel剪枝压缩模型并部署

TRAIN.py - 用于BN层的稀疏化训练

在训练过程中通过在trainer中添加

l1_lambda = 1e-2 * (1 - 0.9 * epoch / self.epochs)
for k, m in self.model.named_modules():
    if isinstance(m, nn.BatchNorm2d):
        m.weight.grad.data.add_(l1_lambda * torch.sign(m.weight.data))
        m.bias.grad.data.add_(1e-2 * torch.sign(m.bias.data))

使用L1正则化对YOLO模型的BatchNorm层的权重和偏置进行约束,通过惩罚模型权重的绝对值来鼓励稀疏性。

PRUNE.py - 用于针对channel的剪枝

通过对BatchNorm层的权重进行排序并设置阈值,剪去那些权重较小的卷积核。将所有BatchNorm层的权重绝对值拼接成一个大的张量,然后按照从大到小的顺序进行排序。根据预设的剪枝因子(如0.85),确定一个阈值,即排序后第85%的位置上的权重值。这个阈值用于决定哪些权重会被剪除。

TRAIN.py - 剪枝后的重训练

移除原来在BN层添加的正则化

TEST.py vs ONNX.py - 分别加载pt和onnx文件测试结果

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