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原图像如下图所示，第一张图像的右侧与第二张图像的左侧有重合区域，通过图像拼接将两张图合成一张图。使用OpenCV的Stitcher函数实现。

完整代码如下，亲测可用。

#include < stdio.h >  
#include < opencv2\opencv.hpp >  
#include < opencv2\stitching.hpp >


int main()
{
	std::vector< cv::Mat > vImg;
	cv::Mat rImg;

	vImg.push_back(cv::imread("xiaoyuan1.bmp"));
	vImg.push_back(cv::imread("xiaoyuan2.bmp"));
	cv::Stitcher::Mode mode = cv::Stitcher::PANORAMA;
	cv::Ptr<cv::Stitcher> stitcher = cv::Stitcher::create(mode);

	unsigned long AAtime = 0, BBtime = 0; //check processing time
	AAtime = cv::getTickCount(); //check processing time

	cv::Mat mergeImage;
	bool status = stitcher->stitch(vImg, mergeImage);

	BBtime = cv::getTickCount(); //check processing time 
	printf("Time consuming: %.2lf sec \n", (BBtime - AAtime) / cv::getTickFrequency()); //check processing time

	if (cv::Stitcher::OK == status)
		cv::imshow("Stitching Result", mergeImage);
	else
		printf("Stitching fail.");

	cv::waitKey(0);
}