win10 下的opencv3.2.0实现tracker常见问题----必要条件整理

在opencv中常常要实现对视频中的目标进行追踪，一些比较新的方法（比如MIL、KCF、TLD等）都在opencv_contrib库里，所以首先你需要下载安装opencv_contrib库，详见在win10下实现openCV3.2.0+vs2015+cmake出错解决方案 。这里需要说明的是我的系统是win10的，所以开发环境均在win10下，以下不做特殊说明均在win10下完成。
关于tracking官网提供了其参考资料Tracking API 、Introduction to OpenCV Tracker 。
opencv3.X以后将目标追踪方法集成到tracking上，集成图如下：

tracking实现的思路如下：

●创建tracker对象 
●使用roiSelector函数的功能，从指定的图像中选择ROI 
●在图像中跟踪特定的区域

这里我引入了一段网上的代码，也是官网的代码稍加修改：

#include <opencv2/core/utility.hpp>
#include <opencv2/tracking/tracking.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
#include <cstring>
using namespace std;
using namespace cv;

int main(int argc, char** argv) {
	// declares all required variables
	Rect2d roi;
	Mat frame;
	// create a tracker object
	Ptr<Tracker> tracker = Tracker::create("KCF");
	// set input video
	//  std::string video = argv[1];
	VideoCapture cap("dount.avi");
	// get bounding box
	cap >> frame;
	roi = selectROI("tracker", frame);
	//quit if ROI was not selected
	if (roi.width == 0 || roi.height == 0)
		return 0;
	// initialize the tracker
	tracker->init(frame, roi);
	// perform the tracking process
	printf("Start the tracking process, press ESC to quit.
");
	for (;; ) {
		// get frame from the video
		cap >> frame;
		// stop the program if no more images
		if (frame.rows == 0 || frame.cols == 0)
			break;
		// update the tracking result
		tracker->update(frame, roi);
		// draw the tracked object
		rectangle(frame, roi, Scalar(255, 0, 0), 2, 1);
		// show image with the tracked object
		imshow("tracker", frame);
		//quit on ESC button
		if (waitKey(1) == 27)break;
	}
	return 0;
}

运行这段代码有两个环境变量要配置：

1.   Ptr<Tracker> tracker = Tracker::create("KCF");报错；

原因是我们要将opencv_contrib库里的tracking引入工程中，这里有两种方法：

    a.直接将opencv_contrib库里tracking文件夹复制到opencv2下，并将tracking文件夹中的tracking文件夹中的内容复制到最外层文件夹里，

复制后的结果：

b.将cmake编译后的文件夹中的include目录引入工程中：VC++目录-->包含目录，添加：   D:workopencvmyopencvinstallinclude

这样编译就没有错误了。

由于我用的第一种方法所以遇到了一个这样的错误：

错误  C1014：包含文件太多：深度=1024

出现这个错误可能的原因是opencv2中有文件重复。

2.编译链接时出现了无法编译的外部错误：

严重性	代码	说明	项目	文件	行	禁止显示状态
错误	LNK2019	无法解析的外部符号 "public: bool __cdecl cv::Tracker::init(class cv::Mat const &,class cv::Rect_<double> const &)" (?init@Tracker@cv@@QEAA_NAEBVMat@2@AEBV?$Rect_@N@2@@Z)，该符号在函数 main 中被引用	point_collect	D:workprojectpoint_collectpoint_collect质点追踪.obj	1

一共有四个这里显示了一个，原因就是没引入tracking的动态链接库，就是要将cmake后的文件夹下的动态链接库引入到工程中，

然后配置输入文件的附加依赖项：

这里注意如果是

Debug：

opencv_aruco320d.lib

opencv_bgsegm320d.lib

opencv_bioinspired320d.lib

opencv_calib3d320d.lib

opencv_ccalib320d.lib

opencv_core320d.lib

opencv_datasets320d.lib

opencv_dnn320d.lib

opencv_dpm320d.lib

opencv_face320d.lib

opencv_features2d320d.lib

opencv_flann320d.lib

opencv_fuzzy320d.lib

opencv_highgui320d.lib

opencv_imgcodecs320d.lib

opencv_imgproc320d.lib

opencv_line_descriptor320d.lib

opencv_ml320d.lib

opencv_objdetect320d.lib

opencv_optflow320d.lib

opencv_phase_unwrapping320d.lib

opencv_photo320d.lib

opencv_plot320d.lib

opencv_reg320d.lib

opencv_rgbd320d.lib

opencv_saliency320d.lib

opencv_shape320d.lib

opencv_stereo320d.lib

opencv_stitching320d.lib

opencv_structured_light320d.lib

opencv_superres320d.lib

opencv_surface_matching320d.lib

opencv_text320d.lib

opencv_tracking320d.lib

opencv_video320d.lib

opencv_videoio320d.lib

opencv_videostab320d.lib

opencv_xfeatures2d320d.lib

opencv_ximgproc320d.lib

opencv_xobjdetect320d.lib

opencv_xobjdetect320d.lib

 否则：

opencv_aruco320.lib
opencv_bgsegm320.lib
opencv_bioinspired320.lib
opencv_calib3d320.lib
opencv_ccalib320.lib
opencv_core320.lib
opencv_datasets320.lib
opencv_dnn320.lib
opencv_dpm320.lib
opencv_face320.lib
opencv_features2d320.lib
opencv_flann320.lib
opencv_fuzzy320.lib
opencv_highgui320.lib
opencv_imgcodecs320.lib
opencv_imgproc320.lib
opencv_line_descriptor320.lib
opencv_ml320.lib
opencv_objdetect320.lib
opencv_optflow320.lib
opencv_phase_unwrapping320.lib
opencv_photo320.lib
opencv_plot320.lib
opencv_reg320.lib
opencv_rgbd320.lib
opencv_saliency320.lib
opencv_shape320.lib
opencv_stereo320.lib
opencv_stitching320.lib
opencv_structured_light320.lib
opencv_superres320.lib
opencv_surface_matching320.lib
opencv_text320.lib
opencv_tracking320.lib
opencv_video320.lib
opencv_videoio320.lib
opencv_videostab320.lib
opencv_xfeatures2d320.lib
opencv_ximgproc320.lib
opencv_xobjdetect320.lib