Extraction patches cnn

1

when I get patches, how do I get the (x, y) axes of the pixel ?

pixel=image.reshape(image.shape[0], image.shape[1]*image.shape[2])

how do I know the axes of the pixel (x, y) plz

2

if c, h, w = image.shape and the index into the pixel tensor is i, j, then y = j // w, x = j % w.

Best regards

Thomas

3

@tom how do I know the i and j of the pixel?

4

The instruction you posted “flattens” the image, so you transform the x y index into a a single j index. You can then use any j between 0 and h * w - 1.

5

@tom , I made a patch extraction in an original image but I want to know i and j of the pixel 1 ?

image