Kuwahara
Local image processing technique used for noise reduction and edge preservation. It divides the image into quadrants, calculates the mean and variance of color values in each quadrant, and selects the quadrant with the minimum color variance. This results in a smoothed version of the original image.
Parameters
tex0 Texture: The input texture to be filtered. Default: The entire canvas
canvasSize Vec2: The size of the texture used for sampling neighboring pixels. Default: The entire canvas