Notes on Colour

cycling through the hues


The hues in this photograph1 are slowly and steadily changing. The effect is achieved by running a small program. The program is not playing a movie file; it is changing the hues of the pixels in a still image. About five times a second, the program makes a small step. At each step, the hue of each pixel is changed to a closely related hue. Eventually, after many steps, the hue of each pixel moves all the way round the colour wheel, back to its original position. The cycle begins again.