Erzeugung von Schablonen mit homogener Verteilung binärer Elemente, anwendbar bei Halbton-Bildwiedergabe

摘要

An image processing system translates input levels of an imaging system to corresponding output levels; the system relies upon quantization and dithering techniques to enable an output device, which has a given number of output levels, to accurately reproduce a image which is generated by an input device, which has a greater or equal number of input levels. Generally, neither the number of input nor output levels need to be a power of two. The several embodiments as described generally rely upon an image processor which, depending on the particular implementation, includes memory devices and an adder, a comparator, or a bit shifter. Additional embodiments use an image adjustment system to refine the raw input levels of the input device, in order to create an improved output image. Also, the particular embodiments of the image processors can be used in connection with imaging systems having bi-tonal, monochromatic, or color input and output devices. <IMAGE>