DESCRIPTIONComputes a pointwise subtraction of two images. If one of the images has only one channel (black&white) and the other has three channels (RGB), then the single channel image is promoted to three channel by placing zeros in the second and third channel.
Port: First Img In
Port: Second Img In
Port: Img Out
subtraction (first - second)
SEE ALSOAddImg, MultImg, DivImg, NegImg, ComplementImg, PowerImg, LogImg, ExpImg.
© The Numerical Algorithms Group Ltd, Oxford UK. 2000