Rice solor sorter machine / rice color sorting machine, also named rice colour sorter, separates rice grains according to color differences in raw rice arising from anomalies like bits of stone, bad rice, black rice, half-husked rice, etc. A high-resolution CCD optical sensor drives a mechanical sorter to separate different granular materials, automatically sorting heterochromatic particles out of the batch of raw rice; removing such impurities in this process improves the quality of the rice.