Pre-processor of the Region-of-Interest Based H.264 Encoder for Low Power Application

摘要：

As the state-of-the-art of the modern video compression standard,H.264 shows a high coding performance. Introducing the motion estimation method, it has ten times computation comparing to MPEG2. The high computational requirement makes it hard to implement on portable devices. According to the human visual system (HVS) research,human eyes can only focus on one area in a frame,which is called region-of interest (ROI). This phenomenon gives a chance to code all macro blocks (MB) unequally.In this work a ROI detector is involved as a pre-processor of the encoder. Although the ROI corresponding the global information, the proposed design makes the detection processes pixel by pixel.It saves the memory to meet the limited hardware resource. The pre-processor itself do not cost much hardware and power,while according to the simulation result,in the system level the ROI based encoder can save 60% computation compare to the standard H.264 encoder design.

关键词： Region-of-Interest ROI H.264 pre-process

作者: Minghui WANG Tianruo ZHANG Satoshi GOTO

作者单位: Graduate School of Information,Production and stems,Waseda University,Kitakyushu,Fukuoka,808-0135 Ja Graduate School of Information,Production and Systems,Waseda University,Kitakyushu,Fukuoka,808-0135

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 171-174

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）