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RSS订阅原创 两条线段是否相交原理及C++实现
step 1: 快速排斥如上图1,2所示：AB的最大X坐标，如果小于PQ的最小X坐标，则不相交CD和UV判断同理，换成Ｙ坐标即可； step 2: 利用向量叉乘判断（亦称跨立方法）2D 叉乘可把 2D 点看作 3D 的点（ z 轴的值为 0 ），套进 3D 叉乘公式进行计算。例如：有2个2D向量 a, b ，计算叉乘就是：（ a.y * b.z - b.y * 0 , 0 * b.x - b.z * a.x , a.x * b.y - b.x * a.y ）...
2020-07-01 17:35:05
1670
原创 基于opencv视频中运动目标标定
//Tools for Labeling Video #include #include #include #include #include using namespace std;using namespace cv;struct labelRect{ Rect rect;int label; };// Global
2016-12-16 18:06:50
980
kernel density estimation based background subtraction
kernel density estimation based background subtraction algorithm [1] with a command line interface. this algorithm is a developed version of [2].
the kmovingobjdetector class within the project is originally written by birant orten who has graciously allowed me to use his code. i just modified it to suit my purposes. so, if you use any material from this program you should refer both [1] and [2] apart from this web-page.
if you compile with __OPENCV__ flag, you'll be able to open avi files. without this flag, you will be able to open just ppm images. the usage.txt explains the input specifications.
2011-05-28
暴风影音源码用于编解码分析
FFmpeg is a complete solution to record, convert and stream audio and video.
It includes libavcodec, the leading audio/video codec library. FFmpeg is developed
under Linux, but it can compiled under most operating systems, including Windows.
该压缩文件包中包含了最新的（2007-10-07）ffmpeg源代码与x264源代码。
ffmpeg版本：（SVN：10675）2007-10-07
x264版本：（SVN：680）2007-10-07
更多信息可访问专题论坛：
ffmpeg工程组： http://www.ffmpeg.com.cn
ffmepg工程组论坛： http://bbs.chinavideo.org
x264乐园论坛： http://bbs.chinavideo.org
佰锐科技 （http://www.bairuitech.com）
2007年10月07日发布
2008-12-27
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