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Tag: arrays

Delete all zeros slices from 4d numpy array

I pretend to remove slices from the third dimension of a 4d numpy array if it’s contains only zeros. I have a 4d numpy array of dimensions [256,256,336,6] and I need to delete the slices in the third dimension that only contains zeros. So the result would have a shape like this , e.g. [256,256,300,6] if…

A copy of image array not working in python

So I am working on Image Encryption and using a chaotic map for diffusion. So I have been trying to rearrange pixels of an image and made a rearranging code. It works fine for normal arrays but when I use it on image, without any rearranging, just a simple copy, the new array doesn’t make any image, in …