Method of electronically processing a quantized image

摘要

A first set of input index signals represents a row-column array of quantized pixels; and each input index signal in the first set represents a rectangular non-overlapping quantized pixel group which is aligned to a particular row and a particular column. By repeatedly performing three steps on different pairs of the input index signals in the first set, a second set of index signals is generated wherein a respective index signal exists for each individual pixel in the array and by which the image can be filtered. These three steps are: 1) selecting a pair of input index signals in the first set such that the two quantized pixel groups which the selected index signals represent are adjacent to each other in the array; 2) forming an address signal by combining the two selected input index signals; and 3) reading a memory with the address signal to thereby obtain an output index signal. That output index signal represents an overlapping group of pixels which-a) consist of pixels from the two adjacent quantized pixel groups, and b) have been requantized.