%A Seung-Won Jung %A Chun-Su Park %A Thanh Ha Le %A Sung-Jea Ko %J Optical Engineering %T Adaptive quarter-pel motion estimation and motion vector coding algorithm for the H. 264/AVC standard %X We present an adaptive quarter-pel (Qpel) motion estimation (ME) method for H.264/AVC. Instead of applying Qpel ME to all macroblocks (MBs), the proposed method selectively performs Qpel ME in an MB level. In order to reduce the bit rate, we also propose a motion vector (MV) encoding technique that adaptively selects a different variable length coding (VLC) table according to the accuracy of the MV. Experimental results show that the proposed method can achieve about 3% average bit rate reduction. %N 11 %P 110502-110502 %V 48 %D 2009 %I International Society for Optics and Photonics %L SisLab1920