Color Inversion

Features:

The algorithm computes the complement of the image where black and white colors are reversed. In the output image, dark areas become lighter and light areas become darker. For color images, reds become cyan, greens become magenta, blues become yellow, and vice versa.

This operation is global and will be retained for all other functions and treatments.

Steps:

1.      Select Filtering and Enhancement → Color Inversion. Visualize the complement (inverted) image.  

The Color Inversion algorithm can be also applied to the RGB presentation. Each color channel of the resulting image is the complement of the corresponding complementary color channel in the original image. Regions that were dark, become light, red colors become cyan, green colors become magenta, blue become yellow, and vice versa.

This inverted image can be returned to the original by using the Filtering and Enhancement → Remove All Filters and Enhancements or Reset button.

Additional Information:

In the complement of a grayscale or color image, each pixel value is subtracted from the maximum pixel value. The difference is used as the pixel value in the output image. In the output image, dark areas become lighter and light areas become darker. For color images, reds become cyan, greens become magenta, blues become yellow, and vice versa.