A Novel Fast Intra Prediction Algorithm applied in H.264/AVC
作者单位：Digital Media LaboratorySchool of Computer Science and EngineeringBeihang University
会议名称：《2006 8th International Conference on Signal Processing》
主办单位：Chinese INstitute of Electronics, CIE;et al;IEE;IEEE Beijing Section;National Natural Science;URSI
会议日期：2006年
学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统]
基 金：Supported by the NSFC(60505007) the Program for New Century Excellent Talents in University,the Doctoral Education Foundation of MOE and the ERIPKU
关 键 词：video coding intra prediction block size annular slide window BMR
摘 要：正Intra prediction applied in H.264/AVC improves compression efficiency of I frame *** the full search algorithm is of high computational expense,which conflicts with some real time application and embedded systems with limited calculation *** order to promote prediction speed,a fast intra prediction algorithm is proposed in this paper which selects appropriate prediction block size based on complexity of the I frame,uses an annular sliding window to select prediction mode dynamically and defines a simple block match *** results show that it is so practical and valid that the match speed has been doubled while the quality of reconstruction I-frame is decreased only slightly.