Following is the list of image arithmetic functions and their usage.
Imabsdiff Returns absolute difference of two images.
Imadd Performs addition of two images or addition of constant to image.
Imapplymatrix Applies linear combination of color channels.
Imcomplement Complements an image.
Imdivide Divide one image into another or divide image by constant.
Imlincomb Linear combination of images.
Immultiply Multiplies two images or multiplies image by constant.
Imsubtract Subtracts one image from another or subtracts constant from image.
