HalftoneFilter
This filter performs a simple halftoning of an image. You supply a mask image which will be used as the halftoning screen. The filter can work in a monochrome or color mode. In monochrome mode, the mask image should contain all shades of gray between black and white. In color mode, each of the red, green and blue channels is treated separately. The filter will tile the mask image if it is smaller than the source image.
Monochrome mode: A Halftone Screen and the Result
Color mode: A Halftone Screen and the Result