Depth error in 2D image with OpenCV Python

Question

I am trying to compute the Canny Edges in an image (ndarray) using OpenCV with Python.

slice1 = slices[15,:,:]
slice1 = slice1[40:80,60:100]
print slice1.sha         


        

Answer 1

In order to avoid losing precision while changing the data type to uint8, you can first adapt the scale to the 255 format just doing:

(image*255).astype(np.uint8)

Here I'm considering that image is a numpy array and np stand for numpy. I hope it can help someone!