APPARATUS AND METHOD FOR ADAPTIVE MOTION ESTIMATION AND MODE DECISION IN H.264 VIDEO CODEC

摘要

The present invention is a fixed background, and a slow uniform for the moving image corresponding macro block by checking a corresponding macroblock in a background image detecting unit for skipping to perform the block-mode scan is divided into blocks of a small size, the background image detecting for the macro-block other than the detection portion by the determined block and a block fast moving irregularly moving by checking the AZCB (All Zero Coefficients block) for the inter mode divides the macro block into blocks of a small size, the small size and an inter mode checking unit for determining whether to perform a block-mode test for inter-the macro block by checking the AZCB to the intra mode for a macroblock other than the part detected by the background image detecting part into blocks of smaller size dividing the block of the small size And an intra mode checking unit for determining whether to perform the block mode tests for the background image detecting unit and when the inter mode checking and determines to skip the block mode scan for blocks of small size from a macroblock, by the intra-mode, checking the macro block is related to an adaptive motion estimation and mode decision apparatus for a H.264 video codec comprising small block mode to check the skip mode to skip the block test on the part of the. ; According to the invention, compared with the prior art by significantly reducing the amount of calculation of H.264 encoder had increased the possibility for real-time encoding, and there is no reduction in the deterioration of the image quality and compression ratio. In addition, there is an advantage that can be easily implemented through a few routines and flags without changing the conventional structure in software. ; H.264, AZCB, RDO, IPM, RDcost, mode decision, real-time coding