//---------------------------------【頭文件、命名空間包含部分】----------------------------//描述：包含程序所使用的頭文件和命名空間//-------------------------------------------------------------------------------------------------

#include "opencv2/video/tracking.hpp"#include"opencv2/imgproc/imgproc.hpp"#include"opencv2/highgui/highgui.hpp"#include#include

using namespacecv;using namespacestd;//-----------------------------------【全局變量聲明】-----------------------------------------//描述：聲明全局變量//-------------------------------------------------------------------------------------------------

Mat image;bool backprojMode = false;bool selectObject = false;int trackObject = 0;bool showHist = true;

Point origin;

Rect selection;int vmin = 10, vmax = 256, smin = 30;//--------------------------------【onMouse( )回調函數】------------------------------------//描述：鼠標操作回調//-------------------------------------------------------------------------------------------------

static void onMouse( int event, int x, int y, int, void*)

{if( selectObject )

{

selection.x=MIN(x, origin.x);

selection.y=MIN(y, origin.y);

selection.width= std::abs(x -origin.x);

selection.height= std::abs(y -origin.y);

selection&= Rect(0, 0, image.cols, image.rows);

}switch( event)

{//此句代碼的OpenCV2版為：//case CV_EVENT_LBUTTONDOWN://此句代碼的OpenCV3版為：

caseEVENT_LBUTTONDOWN:

origin=Point(x,y);

selection= Rect(x,y,0,0);

selectObject= true;break;//此句代碼的OpenCV2版為：//case CV_EVENT_LBUTTONUP://此句代碼的OpenCV3版為：

caseEVENT_LBUTTONUP:

selectObject= false;if( selection.width > 0 && selection.height > 0)

trackObject= -1;break;

}

}//--------------------------------【help( )函數】----------------------------------------------//描述：輸出幫助信息//-------------------------------------------------------------------------------------------------

static voidShowHelpText()

{

cout<< "\n\n\t此Demo顯示了基于均值漂移的追蹤(tracking)技術\n"

"\t請用鼠標框選一個有顏色的物體，對它進行追蹤操作\n";

cout<< "\n\n\t操作說明： \n"

"\t\t用鼠標框選對象來初始化跟蹤\n"

"\t\tESC - 退出程序\n"

"\t\tc - 停止追蹤\n"

"\t\tb - 開/關-投影視圖\n"

"\t\th - 顯示/隱藏-對象直方圖\n"

"\t\tp - 暫停視頻\n";

}const char* keys ={"{1| | 0 | camera number}"};//-----------------------------------【main( )函數】--------------------------------------------//描述：控制臺應用程序的入口函數，我們的程序從這里開始//-------------------------------------------------------------------------------------------------

int main( int argc, const char**argv )

{

ShowHelpText();

VideoCapture cap;

Rect trackWindow;int hsize = 16;float hranges[] = {0,180};const float* phranges =hranges;

cap.open(0);if( !cap.isOpened() )

{

cout<< "不能初始化攝像頭\n";

}

namedWindow("Histogram", 0);

namedWindow("CamShift Demo", 0);

setMouseCallback("CamShift Demo", onMouse, 0);

createTrackbar("Vmin", "CamShift Demo", &vmin, 256, 0);

createTrackbar("Vmax", "CamShift Demo", &vmax, 256, 0);

createTrackbar("Smin", "CamShift Demo", &smin, 256, 0);

Mat frame, hsv, hue, mask, hist, histimg= Mat::zeros(200, 320, CV_8UC3), backproj;bool paused = false;for(;;)

{if( !paused )

{

cap>>frame;if( frame.empty() )break;

}

frame.copyTo(image);if( !paused )

{

cvtColor(image, hsv, COLOR_BGR2HSV);if( trackObject )

{int _vmin = vmin, _vmax =vmax;

inRange(hsv, Scalar(0, smin, MIN(_vmin,_vmax)),

Scalar(180, 256, MAX(_vmin, _vmax)), mask);int ch[] = {0, 0};

hue.create(hsv.size(), hsv.depth());

mixChannels(&hsv, 1, &hue, 1, ch, 1);if( trackObject < 0)

{

Mat roi(hue, selection), maskroi(mask, selection);

calcHist(&roi, 1, 0, maskroi, hist, 1, &hsize, &phranges);//此句代碼的OpenCV3版為：

normalize(hist, hist, 0, 255, NORM_MINMAX);//此句代碼的OpenCV2版為：//normalize(hist, hist, 0, 255, CV_MINMAX);

trackWindow=selection;

trackObject= 1;

histimg= Scalar::all(0);int binW = histimg.cols /hsize;

Mat buf(1, hsize, CV_8UC3);for( int i = 0; i < hsize; i++)

buf.at(i) = Vec3b(saturate_cast(i*180./hsize), 255, 255);//此句代碼的OpenCV3版為：

cvtColor(buf, buf, COLOR_HSV2BGR);//此句代碼的OpenCV2版為：//cvtColor(buf, buf, CV_HSV2BGR);

for( int i = 0; i < hsize; i++)

{int val = saturate_cast(hist.at(i)*histimg.rows/255);

rectangle( histimg, Point(i*binW,histimg.rows),

Point((i+1)*binW,histimg.rows -val),

Scalar(buf.at(i)), -1, 8);

}

}

calcBackProject(&hue, 1, 0, hist, backproj, &phranges);

backproj&=mask;

RotatedRect trackBox=CamShift(backproj, trackWindow,//此句代碼的OpenCV3版為：

TermCriteria( TermCriteria::EPS | TermCriteria::COUNT, 10, 1));//此句代碼的OpenCV2版為：//TermCriteria( CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1 ));

if( trackWindow.area() <= 1)

{int cols = backproj.cols, rows = backproj.rows, r = (MIN(cols, rows) + 5)/6;

trackWindow= Rect(trackWindow.x - r, trackWindow.y -r,

trackWindow.x+ r, trackWindow.y + r) &Rect(0, 0, cols, rows);

}if( backprojMode )

cvtColor( backproj, image, COLOR_GRAY2BGR );//此句代碼的OpenCV3版為：

ellipse( image, trackBox, Scalar(0,0,255), 3, LINE_AA );//此句代碼的OpenCV2版為：//ellipse( image, trackBox, Scalar(0,0,255), 3, CV_AA );

}

}else if( trackObject < 0)

paused= false;if( selectObject && selection.width > 0 && selection.height > 0)

{

Mat roi(image, selection);

bitwise_not(roi, roi);

}

imshow("CamShift Demo", image );

imshow("Histogram", histimg );char c = (char)waitKey(10);if( c == 27)break;switch(c)

{case 'b':

backprojMode= !backprojMode;break;case 'c':

trackObject= 0;

histimg= Scalar::all(0);break;case 'h':

showHist= !showHist;if( !showHist )

destroyWindow("Histogram");elsenamedWindow("Histogram", 1);break;case 'p':

paused= !paused;break;default:

;

}

}return 0;

}

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