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custom_data 特征提取时选用的fps, stride, num_frames #5

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JeffreyWang873670235 opened this issue Jul 12, 2024 · 1 comment

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@JeffreyWang873670235
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在训练自己的数据时,stride, num_frames应该设置为多少? 另外在代码里面看到hard code编码,所以这里stride都要使用16吗?
self.t_factor_point = self.args.frames_per_sec / (vid_fps * 16)

@JeffreyWang873670235
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另外,对于一个动作实例,其中大概需要最少标记几个点。尝试一个实例只有一个点的话,完全没有正确率。 模型可能更倾向于预测所有的feat都为背景。动作损失和背景损失由于都使用了焦点损失,极少的正样本对于整体损失函数的贡献将会十分有限。大概需要标记多少点是最优的

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