@inproceedings{37dfd02e5757447c96379c2427a97e64,
title = "A novel cross-hexagon search algorithm for fast block motion estimation",
abstract = "Search patterns and the center-biased characteristics of motion vector distribution have large impact on both searching speed and quality of block motion estimation. In this paper, we propose a new cross-hexagon search algorithm (NCHEXS) using two cross-shaped search patterns as the first two initial steps and large/small hexagon-shaped patterns as the subsequent steps for fast block motion estimation (BME). NCHEXS employs halfway stop technique to achieve significant speedup on sequences with stationary and quasi-stationary blocks. To further reduce computational complexity, NCHEXS employs Modified Partial Distortion Criterion (MPDC). Experimental results indicate that the improvements of NCHEXS over Hexagon Search (HEXS) and Cross-Diamond Search (CDS) can save 45\% and 28\% of search points while keeping similar PSNR, and NCHEXS provides faster searching speed and smaller distortion than other popular fast block-matching motion estimation algorithms.",
keywords = "block-matching, cross-hexagon search, modified partial distortion criterion, motion estimation",
author = "Kamel Belloulata and Shiping Zhu and Jun Tian and Xiaodong Shen",
year = "2011",
doi = "10.1109/WOSSPA.2011.5931406",
language = "英语",
isbn = "9781457706905",
series = "7th International Workshop on Systems, Signal Processing and their Applications, WoSSPA 2011",
pages = "1--4",
booktitle = "7th International Workshop on Systems, Signal Processing and their Applications, WoSSPA 2011",
note = "7th International Workshop on Systems, Signal Processing and their Applications, WoSSPA 2011 ; Conference date: 09-05-2011 Through 11-05-2011",
}