METHOD AND APPARATUS FOR COMPENSATING ILLUMINATION COMPENSATION AND METHOD AND APPARATUS FOR ENCODING MOVING PICTURE BASED ON ILLUMINATION COMPENSATION, AND METHOD AND APPARATUS FOR ENCODING MOVING PICTURE BASED ON ILLUMINATION COMPENSATION

摘要

A method and an apparatus for compensating for luminance, and a method and an apparatus for encoding moving picture by using the same are provided to generate a luminance compensation parameter based on relation between values of ambient pixels of a present block and values of ambient pixels of a reference block for carrying out luminance compensation with regard to the reference block, thereby increasing encoding efficiency easily. A method for compensating for luminance comprises the steps of; receiving values of ambient pixels of a present block and values of ambient pixels of a reference block(310); and compensating for luminance with regard to the reference block based on a difference between the values of the ambient pixels of the inputted present block and the values of the pixels of the reference block(320). A luminance compensation parameter is calculated based on a relation between the pixel values of the two blocks. The luminance compensated reference block is generated based on the calculated luminance compensation parameter.