PIL rotate image colors (BGR -> RGB)

Question

I have an image where the colors are BGR. How can I transform my PIL image to swap the B and R elements of each pixel in an efficient manner?

Answer 1

Using the ideas explained before... using numpy you could.

bgr_image_array = numpy.asarray(bgr_image)
B, G, R = bgr_image_array.T
rgb_image_array = np.array((R, G, B)).T
rgb_image = Image.fromarray(rgb_image_array, mode='RGB')

Additionally it can remove the Alpha channel.

assert bgra_image_array.shape == (image_height, image_width, 4)
B, G, R, _ = bgra_image_array.T
rgb_image_array = np.array((R, G, B)).T