FlowNet2C training and validation

[Queenyy]

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@ClementPinard Hi, thanks for your great work, I used it when training FlowNet2C. Install is well-done. I use SpatialCorrelationSampler(kernel_size=1, patch_size=21, stride=1, padding=0, dilation=1, dilation_patch=2) to replace the correlation function in the code. But the training loss didn't decrease and the validation EPE is very big. I don't know why, could you please give me some suggestions? Thanks very much.

[ClementPinard]

Hi, thanks for your interest in this repo. Can you add some details ? What code do you use exactly ? Do you have a repo name ? I used this repo for FlowNetC in my own FlowNetPytorch repo without problem.

[Queenyy]

@ClementPinard Thanks for your quick reply. I use the NVIDIA/flownet2-pytorchhttps://github.com/NVIDIA/flownet2-pytorch repo. When i use its own correlation function to train FlowNet2C, the loss is bumping, but train FlowNet2S can get a right result. So I guess the bad result on FlowNet2C is because of correlation layer, thus i used your work to replace the original function. It seems that the loss is still bumping. I use cuda 10.0, pytorch 1.2, gcc 4.4.7. is there some problems here? Do you have other trick to train FlowNet2C?
Extremely Grateful.