IMAGE DITHERING BASED ON FAREY FRACTIONS

摘要

A method for image processing includes quantizing pixel values of the first digital image to form a sequence of quantized pixel values each having the second bit depth. The step of quantizing the pixel values generates a sequence of least significant bit groups, each of the least significant bit groups including one or more least significant bits removed from an associated pixel value of the first digital image, The method also includes converting at least some of the least significant bit groups to binary values, the conversion of each least significant bit group using a binary representation of a fraction proportional to a value of the one or more least significant bits from the least significant bit group and adding the binary values to the quantized pixel values to produce the processed digital image.