Can thresholding only be applied to a grayscale image?
I have read many articles like this which suggest that you can only apply a threshold to a grayscale picture.
I have also seen splitting of RGB or HSV values to apply a threshold to the individual channels. However, is it possible to apply a threshold to an image, to all of these channels, without the need for a time expensive split/merge operation?
May be you can try with inrange