[Solved] How can we interpret this Python code? [closed]

Question

As I understand, img1 and img2 are matrices containing all the pixels of two images.

Suppose:

img1 = x x x
       x x x
       x x x

img2 = o o
       o o
       o o
       o o

Output is a matrix whose height is the highest between img1 and img2 and whose width is the sum of both widths. I don’t know if depth is relevant, but it uses the depth (z-axis) of the first image. Then output would be:

output = 0 0 0 0 0
         0 0 0 0 0
         0 0 0 0 0
         0 0 0 0 0

The first step is to save img1 on output. This is done occupying the indices from 0 to img1.height on the y axis and from 0 to img1.width on the y axis.

output[:img1.shape[0], :img1.shape[1],:] = img1

output = x x x 0 0
         x x x 0 0
         x x x 0 0
         0 0 0 0 0

Next, img2 is saved from 0 to img2.height on the y axis and from img1.width to img1.width+img2.width on the x axis.

Then:

output[:img2.shape[0]:,img1.shape[1]:img1.shape[1]+img2.shape[1],:] = img2

output = x x x o o
         x x x o o
         x x x o o
         0 0 0 o o

I suppose that this would be done in the z axis as well if both images have information on this axis.

Accepted Answer