DocumentCode
3193908
Title
A novel homography-based search algorithm for block motion estimation in video coding
Author
Cui, Zhaopeng ; Jiang, Guang ; Wang, Dujuan ; Wu, Chengke
Author_Institution
ISN National Key Lab, School of Telecommunication Engineering, Xidian University, Xi´´an, China
fYear
2011
fDate
11-15 July 2011
Firstpage
1
Lastpage
6
Abstract
There lies a geometric relationship (homography) between two frames in the video sequences captured by pan-tilt (PT) cameras due to their constrained movement, and the geometric relationship is valuable for reducing the spatial redundancy in video coding. In this paper, we propose a novel homography-based search (HBS) algorithm for block motion estimation in coding the sequences captured by PT cameras, which well utilizes the homography between two frames. In addition, adaptive thresholds are adopted in our method to classify different kinds of blocks. Compared with other traditional fast algorithms, the proposed HBS algorithm is proved more efficient for the sequences captured by PT cameras.
Keywords
Homography; adaptive thresholds; motion estimation; video coding;
fLanguage
English
Publisher
ieee
Conference_Titel
Multimedia and Expo (ICME), 2011 IEEE International Conference on
Conference_Location
Barcelona, Spain
ISSN
1945-7871
Print_ISBN
978-1-61284-348-3
Electronic_ISBN
1945-7871
Type
conf
DOI
10.1109/ICME.2011.6011886
Filename
6011886
Link To Document