Novel Step Search of Block-Size Selection for Variable Block-Size Motion Estimation
Variable block-size motion estimation (VBSME) of H.264/AVC utilizes seven block-sizes to describe the movement of video details. The VBSME can extremely improve the efficiency of compressed image but the problems of the block-size selection and aspect effects impact the resultant quality. Therefore, the number of motion vector (MV) determines the efficiency of video coding. Additionally, because the block matching algorithm (BMA) of small block would be interfered by surrounding aperture, the searching results often mistake the originals of vision reception and cause the unreliability of reconstructed frame. In the paper, we propose dual issues to solve current problems of VBSME. First, weighted calculation of VBSME is presented to avoid the affects of aperture effects. However, a step search of block-size selection is proposed to detect the object motion and efficiently apply the MVs of small-size block.
Hsueh-Yen Yang Yu-Cheng Fan Hen-Wai Tsao
Depart. of Electrical Eng. and Graduate Institute of Electronics Eng., National Taiwan University In Depart. of Electronic Eng. National Taipei University of Technol. Integrated System Lab
国际会议
上海
英文
1705-1709
2010-10-20（万方平台首次上网日期，不代表论文的发表时间）