<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[shijingli的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/shijingli</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; shijingli]]></copyright><item><title><![CDATA[Object Tracking]]></title><link>https://blog.youkuaiyun.com/shijingli/article/details/10823339</link><guid>https://blog.youkuaiyun.com/shijingli/article/details/10823339</guid><author>shijingli</author><pubDate>Sun, 01 Sep 2013 13:44:23 +0800</pubDate><description><![CDATA[Method 1
Tensor Voting


Method 2
CUDA Optical Flow]]></description><category></category></item><item><title><![CDATA[四元数与旋转]]></title><link>https://blog.youkuaiyun.com/shijingli/article/details/9133769</link><guid>https://blog.youkuaiyun.com/shijingli/article/details/9133769</guid><author>shijingli</author><pubDate>Thu, 20 Jun 2013 08:54:30 +0800</pubDate><description><![CDATA[转自：http://www.cnblogs.com/kfqcome/archive/2011/08/17/2143289.html

一．四元组基础
Q(x,y,z,w)，其中x，y，z用来确定旋转轴，w为旋转的角度
Q=w+xi+yj+zk，i，j，k为三个虚轴的单位分量
I*j=k
J*k=i;
K*i=j;
叉乘：
c=a × b= 
| i     j     k|]]></description><category></category></item></channel></rss>