Hands-On Image Processing with Python

α-blending two images

The blend() function can be used to create a new image by interpolating two given images (of the same size) using a constant, α. Both images must have the same size and mode. The output image is given by the following:

out = image₁ * (1.0 - α) + image₂ * α

If α is 0.0, a copy of the first image is returned. If α is 1.0, a copy of the second image is returned. The next code snippet shows an example:

im1 = Image.open("../images/parrot.png")im2 = Image.open("../images/hill.png")# 453 340 1280 960 RGB RGBAim1 = im1.convert('RGBA') # two images have different modes, must be converted to the same modeim2 = im2.resize((im1.width, im1.height), Image.BILINEAR) # two images have different sizes, must be converted to the same ...