Ximagic GrayDither is a Photoshop plugin to reduce color/grayscale images to n-level gray using dithering. As a particular case could produce B/W bitmap images (2-level grayscale).It Provides: Automatic conversion RGB color to grayscale using Y in YCbCr color space. 4 threshold dithering methods. 17 Ordered patterns (clustered-dot, dispersed-dot, etc) 5 Ordered calculated patterns. Random User defined 2 error dithering methods. 8 Array patterns (floyd-steinberg, ulichney, fan, jarvis, stucki, sierra). 1 Space filling curve (riemersma) Direct binary search (DBS) dithering.
It support of 8/16 bits images,support of Photoshop actions/batch,support use as Smart filter, and Versions for 32 and 64 bit plugin hosts.