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Can you give some explanation on apply affine transform, i.e, the use of get_warpmatrix and warpAffine? #42

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shizidushu opened this issue Feb 22, 2022 · 0 comments

shizidushu commented Feb 22, 2022

For the two lines:

UDP-Pose/deep-high-resolution-net.pytorch/lib/dataset/JointsDataset.py

Lines 213 to 214 in 096fa07

    
           trans = get_warpmatrix(r,c*2.0,self.image_size-1.0,s) 
        
           input = cv2.warpAffine(data_numpy, trans, (int(self.image_size[0]), int(self.image_size[1])), flags=cv2.WARP_INVERSE_MAP|cv2.INTER_LINEAR)

Can you give some explanation on it?

Why pass c*2 (why multiply by 2)?
How it works by passing the given parameters?

Thank you very much.

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