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有关模型训练问题 #349

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Liming-belief opened this issue Dec 25, 2023 · 1 comment
Open

有关模型训练问题 #349

Liming-belief opened this issue Dec 25, 2023 · 1 comment

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@Liming-belief
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作者你好,我利用光流预测模型生成的光流图去约束rife生成的光流图,从结果上来看rife生成的光流图整体不错但是在细节方面不是很准确,我目前采用l1对光流计算损失,请问我可以采用其他什么损失能够提高生成光流图的准确性呢?

@hzwer
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hzwer commented Dec 25, 2023

你好;我研究过这个问题,我发现光流预测的生成结果和 rife 生成结果的差异,未必能说明是 rife 好还是光流预测好
光流预测约束了物体内的平滑性,光流边缘和图片边缘的一致性,因此人看起来觉得很对,但未必说明那个光流值在帧合成的角度是对的,可以参考文献 TOFlow: Video Enhancement with Task-Oriented Flow

还有一个更大的问题是,在插帧中,物体的运动带有不确定性,因此产生的光流结果可能是一个平均的结果,也导致问题
https://openreview.net/forum?id=QuFHei1vuE&noteId=u22Yw26krb

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