帧差法实现前景背景分离

帧差法实现前景背景分离，来自于BGSLibrary，对于静态的背景效果很好！

#include 
#include 

using namespace std;
using namespace cv;

//our sensitivity value to be used in the absdiff（） function
const static int SENSITIVITY_VALUE = 20;
//size of blur used to smooth the intensity image output from absdiff（） function
const static int BLUR_SIZE = 10;
//we‘ll have just one object to search for
//and keep track of its position.
int theobject[2] = {00};
//bounding rectangle of the object we will use the center of this as its position.
Rect objectBoundingRectangle = Rect（0000）;


//int to string helper function
string intToString（int number）{

	//this function has a number input and string output
	std::stringstream ss;
	ss << number;
	return ss.str（）;
}

int main（）{

	//these two can be toggled by pressing ‘d‘ or ‘t‘
	bool debugMode = true;
	//pause and resume code
	bool pause = false;
	//set up the matrices that we will need
	//the two frames we will be comparing
	Mat frame1frame2;
	//their grayscale images （needed for absdiff（） function）
	Mat grayImage1grayImage2;
	//resulting difference image
	Mat differenceImage;
	//thresholded difference image （for use in findContours（） function）
	Mat thresholdImage;
	//video capture object.
	VideoCapture capture;

	while（1）{

		//we can loop the video by re-opening the capture every time the video reaches its last frame

		capture.open（“video.avi“）;

		if（!capture.isOpened（））{
			cout<<“ERROR ACQUIRING VIDEO FEED\n“;
			getchar（）;
			return -1;
		}

		//check if the video has reach its last frame.
		//we add ‘-1‘ because we are reading two frames from the video at a time.
		//if this is not included we get a memory error!
		while（capture.get（CV_CAP_PROP_POS_frameS）ame_COUNT）-1）{

			//read first frame
			capture.read（frame1）;
			//convert frame1 to gray scale for frame differencing
			cv::cvtColor（frame1grayImage1COLOR_BGR2GRAY）;
			//copy second frame
			capture.read（frame2）;
			//convert frame2 to gray scale for frame differencing
			cv::cvtColor（frame2grayImage2COLOR_BGR2GRAY）;
			//perform frame differencing with the sequential images. This will output an “intensity image“
			//do not confuse this with a threshold image we will need to perform thresholding afterwards.
			cv::absdiff（grayImage1grayImage2differenceImage）;
			//threshold intensity image at a given sensitivity value
			cv::threshold（differenceImagethresholdImageSENSITIVITY_VALUE255THRESH_BINARY）;
			if（debugMode==true）{
				//show the difference image and threshold image
				cv::imshow（“Difference Image“differenceImage）;
				cv::imshow（“Threshold Image“ thresholdImage）;
			}else{
				//if not in debug mode destroy the windows so we don‘t see them anymore
				cv::destroyWindow（“Difference Image“）;
				cv::destroyWindow（“Threshold Image“）;
			}
			//blur the image to get rid of the noise. This will output an intensity image
			cv::blur（thresholdImagethresho

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2014-10-03 21:05  frame_Difference_1\
     目录           0  2014-10-03 20:57  frame_Difference_1\Debug\
     目录           0  2014-10-03 20:56  frame_Difference_1\frame_Difference_1\
     文件    39845888  2014-10-03 21:05  frame_Difference_1\frame_Difference_1.sdf
     文件         921  2014-10-03 20:52  frame_Difference_1\frame_Difference_1.sln
     文件       20480  2014-10-03 21:05  frame_Difference_1\frame_Difference_1.v11.suo
     目录           0  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\
     文件         762  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\cl.command.1.tlog
     文件       18994  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\CL.read.1.tlog
     文件         374  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\CL.write.1.tlog
     文件        2072  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\frame_Difference_1.Build.CppClean.log
     文件          93  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\frame_Difference_1.lastbuildstate
     文件        1252  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\frame_Difference_1.log
     文件           0  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\frame_Difference_1.unsuccessfulbuild
     文件      363520  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\vc110.idb
     文件      561152  2014-10-03 20:57  frame_Difference_1\frame_Difference_1\Debug\vc110.pdb
     文件        4018  2014-10-03 20:54  frame_Difference_1\frame_Difference_1\frame_Difference_1.vcxproj
     文件         942  2014-10-03 20:54  frame_Difference_1\frame_Difference_1\frame_Difference_1.vcxproj.filters
     文件        3967  2014-10-03 20:58  frame_Difference_1\frame_Difference_1\main.cpp
     文件     1049784  2012-02-02 09:30  frame_Difference_1\frame_Difference_1\video.avi