I'm confused about some lines of code in the 'infer_cam.py'

[Jamie-obj]

Could you explain why the code need flip operation in the lines 64 through 66? Several papers hava also used this operation.

if i % 2 == 1: cam = np.flip(cam, axis=-1) return cam

[Dreamupers]

I'm confused, too.

[WeiChihChern]

That's for test time data augmentation.

Take a look at the dataloader, some images were flipped, it simply flips it back.