DDColor is the latest image coloring algorithm. It takes a black and white image as input and returns a colorized image with a natural and vivid coloring effect. This model is a black and white image coloring model. Given a black and white image, it performs end-to-end full-image coloring, returning a colorized image. Expected Usage and Applicability: This model is suitable for various image input formats. Given a black and white image, it generates a colorized image; given a color image, it automatically extracts the grayscale channel as input to generate a re-colored image.