Discarding alpha channel from images stored as Numpy arrays
scikit-image builtin:
from skimage.color import rgba2rgbfrom skimage import dataimg_rgba = data.logo()img_rgb = rgba2rgb(img_rgba)https://scikit-image.org/docs/dev/user_guide/transforming_image_data.html#conversion-from-rgba-to-rgb-removing-alpha-channel-through-alpha-blending
https://scikit-image.org/docs/dev/api/skimage.color.html#rgba2rgb