It is part of a university project visualize displacement of speckles between to pictures. To do that I use the HSV color room, so the angle of displacement is respresented by hue and the displacement represented by value. The saturation is always 100%.
What I need now is a picture with a 2 dimensional color cycle which is dark (black) in the middle and full colorized at outer edge of the cycle. This picture will be implemented in the software to simply explain the visualization of the Speckle.
I have photoshop but solutions with another software are accepted.
How to create such a color cycle?