Patent ID: 8526749
Filing Date: 2013-09-03
Classification: H04N

Abstract:
1. A method of encoding an image based on psycho-visual characteristics, the method comprising: calculating an error between a value of an input predetermined pixel, of a plurality of pixels forming an image, and a predicted value of a reference pixel corresponding to the predetermined pixel; calculating a difference value between two or more pixels among the plurality of pixels forming the image; calculating a threshold value by dividing the calculated difference value by a preset value; determining a range of the calculated error to be encoded according to a preset operation determining the range, the preset operation determining the range based on a psycho-visual characteristic based recognition of portions of the calculated error selected to be excluded during encoding, wherein the determining of the range comprises selecting a number of most significant bits of the calculated error which correspond to a value equal to or greater than the calculated threshold; and encoding the calculated error using only the determined range, by encoding only the selected number of most significant bits for the encoding of the calculated error.