Something severely wrong happened!!! All the pixels are invalid in estimation Laplacian noise!!!

[Tord-Zhang]

when I use the coarse2fine_flow interface, I always get this error. Do you know how to fix this?
Thanks.

[relh]

make sure you aren't passing in the same image for both im1 and im2

[Amazingalice]

I met the same problem! Can you describe the solution more detailedly?

[Cugtyt]

Have you solved it? The same problem!

[tunglm2203]

I met the same problem, did anyone solve it?

[yuanlinwang]

Gray images could not be convert to RGB images and use colType = 0
use colType = 1 with one channel is the right operation