VScode+opencv——关于opencv多张图片拼接成一张图片的算法

用于显示多张图片------变量为图片组，图像尺寸，间隙，边界值，输出图片

#include <iostream>
#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

//用于显示多张图片,变量为图片组，图像尺寸，间隙，边界值，输出图片
void ShowManyImages (const vector<cv::Mat>&srcImages,int nShowImageSize,int nSplitLineSize,int nAroundLineSize,Mat &outImage)
{
//图片数量
int nNumImages=srcImages.size();
//窗口大小
cv::Size nSizeWindows;
if(nNumImages>12)
{
    cout<<"不要超过12张，傻逼吧你"<<endl;
    return;
}
//根据图片数量设置
switch(nNumImages)
{
    case 1:nSizeWindows=Size(1,1);break;
    case 2:nSizeWindows=Size(2,1);break;
    case 3:
    case 4:nSizeWindows=Size(2,2);break;
    case 5:
    case 6:nSizeWindows=Size(3,2);break;
    case 7:
    case 8:nSizeWindows=Size(4,2);break;
    case 9:nSizeWindows=Size(3,3);break;
    default:nSizeWindows=Size(4,3);break;
}

//图像尺寸，间隙，边界值


//创建输出图像

const int imagesHeight =nShowImageSize*nSizeWindows.width+nAroundLineSize+(nSizeWindows.width-1)*nSplitLineSize;
const int imagesWidth =nShowImageSize*nSizeWindows.height+nAroundLineSize+(nSizeWindows.height-1)*nSplitLineSize;
Mat showWindowsImages(imagesWidth,imagesHeight,CV_8UC3,Scalar(0,0,0));

//提取小图像左上角x,y
int posX = (showWindowsImages.cols-(nShowImageSize*nSizeWindows.width+(nSizeWindows.width-1)*nSplitLineSize))/2;
int posY = (showWindowsImages.rows-(nShowImageSize*nSizeWindows.height+(nSizeWindows.height-1)*nSplitLineSize))/2;

int tempPosX=posX;
int tempPosY=posY;

//将每一幅图像放置到大图像对应位置

for (int i=0; i< nNumImages;i++)
{
//小图标转换
if((i%nSizeWindows.width==0) && (tempPosX!=posX))
{
   tempPosX=posX;
   tempPosY +=(nSplitLineSize + nShowImageSize);
}
//小图像置于大图像处
Mat tempImage=showWindowsImages(Rect(tempPosX,tempPosY,nShowImageSize,nShowImageSize));

//利用resize实现图像缩放
resize(srcImages[i],tempImage,Size(nShowImageSize,nShowImageSize));
tempPosX += (nSplitLineSize+nShowImageSize);

}
outImage = showWindowsImages;

}