MATLAB: My Colored image gets read as a bw image

#imageprocessing #image #colorImage Processing Toolbox

pic=imread('C:\Users\Acer\Desktop\p.png');

imshow(pic)

(this is how the image in my desktop looks)

(this how the matlab reads it)

MATLAB is loading it as an indexed image: https://www.mathworks.com/help/images/image-types-in-the-toolbox.html#f14-17587. The following show how to display it properly

[im, cm] = imread('image.png', 'png');
imshow(im, 'Colormap', cm)

If you also want an rgb image

[im, cm] = imread('image.png', 'png');
im_rgb = ind2rgb(im, cm);
imshow(im_rgb)

this gives an error with imsubstract because the images are not of the same size.

Okay, got it:

first I did not import the color profile (see this SO answer)

[img, cm] = imread('son1.gif');
img = ind2rgb(img, cm);

Then, I had to scale the result to get in the representable range:

imshow(uint8(imdivide(img_d, bg_d) * 100))

which shows the correct output: