| ::abs_image | Calculate the absolute value (modulus) of an image. |
| ::add_image | Add two images. |
| ::div_image | Divide two images. |
| ::invert_image | Invert an image. |
| ::max_image | Calculate the maximum of two images pixel by pixel. |
| ::min_image | Calculate the minimum of two images pixel by pixel. |
| ::mult_image | Multiply two images. |
| ::scale_image | Scale the gray values of an image. |
| ::sub_image | Subtract two images. |