%0 Journal Article
%T A Fast Global Motion Estimation Algorithm<br>一种快速全局运动估计算法
%A GUO Li
%A GONG Sheng-rong
%A CUI Zhi-ming
%A <br>郭丽
%A 龚声蓉
%A 崔志明
%J 中国图象图形学报
%D 2007
%I 
%X In this paper,the algorithm of global motion estimation is investigated,and a fast global motion estimation algorithm is introduced.The new algorithm is based on nonlinear dense estimation and applies the affine model.In order to reduce the time cost during calculation,three-level pyramid is utilized in the algorithm.It combines outlier detection algorithm based on blocks and feature pixels selection algorithm in the calculation of each pyramid level.The calculation time of global motion estimation is reduced and the accuracy is improved.The experimental results show that the new algorithm is superior to original algorithms in velocity and accuracy.
%K global motion estimation
%K parameter model
%K affine transform
%K outlier detection
%K feature pixels selection<br>全局运动估计
%K 参数模型
%K 仿射变换
%K 外点去除
%K 特征点选取
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=3453385C97F4B00F6D7F516A9931639F&yid=A732AF04DDA03BB3&vid=59906B3B2830C2C5&iid=59906B3B2830C2C5&sid=25F460E3298FB693&eid=6205636A05F6FF86&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=9