APPARATUS AND METHOD FOR TRANSFORMING A BRIGHTNESS OF A IMAGE DATA IN A TERMINAL

摘要

The present invention relates to a device and a method for transforming brightness of an image data in a terminal. Coefficients included in a macroblock of a previously stored image data are linearly approximated, and the image data with transformed brightness is generated considering the linearly approximated coefficients. [Reference numerals] (501) Releasing the compression of image data; (503) Analyzing a header of the image data; (505) Decoding the image data; (507) Performing inverse zigzag calculation to each block; (509) Inverse quantizing coefficients of a macro-block; (511) Correcting brightness of an image file; (513) Quantizing the coefficients of the macro-block; (515) Performing the zigzag calculation to each block; (517) Coding the image data; (519) Adding the header to the image data; (520) Compressing the image data; (AA) Start; (BB) End