Channel Swap | COMP101

Pseudocode

PROCEDURE channel_swap(image)
    FOR x = 0 .. width DO
        FOR y = 0 .. height DO
            c <- pixel(x, y)

            tmp <- c_0
            c_0 <- c_1
            c_0 <- tmp

            pixel(x, y) <- c
        END FOR
    END FOR
END PROCEDURE

Description

Loop through each pixel in the image and retrieve its value. Perfrom a swap of the two channels (eg, using an intermediary) and then set the (now swapped) channels back into the image at the same location.

Related Concepts

Swap using a temporary value

Acknowledgements

Adapted from Pseudocode produced for COMP120 by Dr. Micheal Scott.