[an error occurred while processing this directive]
   
 
���¿��ټ��� �߼�����
   ��ҳ  �ڿ�����  ��ί��  Ͷ��ָ��  �ڿ�����  ��������  �� �� ��  ��ϵ����
�������պ����ѧѧ�� 2007, Vol. 33 Issue (02) :219-223    DOI:
���� ����Ŀ¼ | ����Ŀ¼ | ������� | �߼����� << | >>
һ������H.264/AVC�Ŀ���֡��Ԥ��ѡ���㷨
������, Ҧ����, �ν���, ���*
�������պ����ѧ �����ѧԺ, ���� 100083
Fast selective algorithm of Intra prediction for H.264/AVC
Meng Qinglei, Yao Chunlian, Song Jianbin, Li Wei*
School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

ժҪ
�����
�������
Download: PDF (434KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
ժҪ Ϊ���I֡�ı���Ч��,���µ���Ƶѹ�������׼H.264/AVC,�ڿռ����� �Ӷ��������ж���ģʽ��֡��Ԥ��,��ʹ����ʧ���Ż��㷨ѡ�����ģʽ,�㷨���ӶȺ� ��.Ϊ��,�����һ�ֿ��ٵ�֡��Ԥ���㷨.������ȿ��ģʽѡ�����,����˻���ͼ�� ��ֵ�ͻ������ڻ�������Ӧ�ص�����ֵ��ֵ�ķ����Ժ��ģʽ����Ԥ��;�������ģʽ�ж� ��Ԥ�ⷽ���ѡ��,��������м���,Ԥ���ų�һЩ������С��Ԥ�ⷽ��;�����ȿ��ɫ �ȿ����ϵ���ʧ��ͳ����,�ı��㷨�ṹ,Ԥ�ȼ���ɫ�ȿ����ģʽ.ʵ��������,�� ���ڲ�����ͼ�������Ļ�����,�����ٶ�ƽ�����76%,����ƽ������2.6%.
Service
�ѱ����Ƽ�������
�����ҵ����
�������ù�����
Email Alert
RSS
�����������
�ؼ����� H.264/AVC   ֡��Ԥ��   ͼ����   Ԥ��ģʽ   �����     
Abstract�� The newest video coding standard H.264/AVC provides several predic ting modes and directions for Intra prediction in the spatial region, and the op timal mode was selected by rate-distortion optimization(RDO) with high coding c omplexity. In order to solve this problem, the fast selection algorithm was prop osed from different aspects: Firstly, for luminance mode selection, the method w as proposed that utilizes the image entropy value to predict the mode of the mac roblock, and updates the threshold adaptively by a sliding window. Secondly, int ermediate computing results were reused to reduce the predicting directions. Fin ally, in the RDO performance, the arithmetic structure of Intra prediction was c hanged with calculating the best chromance mode separately. Experimental results s how that with similar distortion performance, the algorithm that adopt the above three strategy can efficiently reduce the computational complexity up to 76% wi th 2.6% increase of bits rate averagely.
Keywords�� H.264/AVC   Intra prediction   image entropy   prediction mode   correlation     
Received 2006-03-21;
Fund:

������Ȼ��ѧ����������Ŀ(60505007); ������ �����˲�֧�ּƻ�������Ŀ; ������������������Ŀ

About author: ������(1980-),��,����������,��ʿ��,mql198029@gmai l.com.
���ñ���:   
������, Ҧ����, �ν���, ���.һ������H.264/AVC�Ŀ���֡��Ԥ��ѡ���㷨[J]  �������պ����ѧѧ��, 2007,V33(02): 219-223
Meng Qinglei, Yao Chunlian, Song Jianbin, Li Wei.Fast selective algorithm of Intra prediction for H.264/AVC[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(02): 219-223
���ӱ���:  
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2007/V33/I02/219
Copyright 2010 by �������պ����ѧѧ��