IMAGE ENCODING AND DECODING METHOD AND APPARATUS

摘要

In a recording medium for recording a program which is executed by a computer to decode an image according to the present invention, the program comprises the steps of restoring a residual block by performing inverse quantization and inverse transformation of entropy-decoded residual block information; generating a prediction block by performing intra prediction for a current block; and restoring an image by adding the restored residual block to the prediction block, wherein the step of generating the prediction block comprises the step of generating a final prediction value of a pixel to be predicted, which is included in the current block, based on a primary prediction value of the pixel to be predicted and a final correction value calculated by performing an arithmetic right shift of an initial correction value of the pixel to be predicted by a binary digit 1. Therefore, operational complexity during image encoding and decoding can be reduced.