CNC woodworking engraving machine principle of BMP image is converted into G code

BMP image is composed of pixel bitmap images, every pixel corresponding to the corresponding grey value ( For gray image) 。 Image pixels with CNC woodworking engraving machine carved trajectory point has certain function relation, grey value also one-to-one correspondence with engraving depth. After establishing corresponding coordinate system, can be a function of both. Considering tool radius, engraving depth of the corresponding points in cutting tool radius pixel grayscale average.