why are calculating the optical flow on cpu?

[rayset]

why are calculating the optical flow on cpu?

[svdka]

Indeed, there are optical flow calculation implementation done in GPU. - with openCV https://github.com/qassemoquab/gpuoptflow but not sure how to implement that. I'm looking into it but if someone has a better answer go for it.

[manuelruder]

The reason why I have chosen the CPU version is because you can parallelize optical flow calculation and video stylization. When the stylizing script works on frame 2, you can compute 0002_0003 in advance, and so on. Optical flow should be faster than the video stylization, therefore you should never have to wait for the optical flow.

Also it must be mentioned that it's crucial to have a high quality optical flow estimation. Therefore, we recommend state of the art optical flow algorithms like DeepFlow or EpicFlow.

[svdka]

Ok, thanks, that makes a lot of sense !

[NameRX]

Here is my pull request #37 , where i changed code to process both optical flow and style transfer simultaneously, making work both CPU and GPU, to speed up a process.