方法一:用copyTo函數
#include <iostream>
#include <ctime>
#include <vector>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
int main() {
int windown_height = 260;
int windown_width = 180;
Mat img = imread("E:/code/box/result/a.jpg");
Mat box = imread("E:/code/box/base_box/1.jpg");
cvtColor(img, img, CV_BGR2GRAY);
Mat Board(windown_height, windown_width, CV_8UC1, Scalar(255));
//取出img的一部分
Mat rect=img(Rect(1,windown_height - box.rows - 1, 127 - 1+box.cols, box.rows));
Mat strip = rect.clone();
//在Board上設置ROI
Rect BoardROI1 = Rect(1, windown_height - box.rows - 1, 127 - 1 + box.cols, box.rows);
//把Borad的ROI替換img取出的那部分
strip.copyTo(Board(BoardROI1));
imshow("show", Board);
waitKey(0);
return 0;
}
rect(x,y,width,height)四個參數:
int x; /* 方形的左上角的x-座標 /
int y; / 方形的左上角的y-座標*/
int width; /* 寬 /
int height; / 高 */
resize(輸入圖像,輸出圖像,Size(re_x,re_y))
方法二:用addWeighted函數
#include <iostream>
#include <ctime>
#include <vector>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
int main() {
int windown_height = 260;
int windown_width = 180;
Mat img = imread("E:/code/box/result/a.jpg");
Mat box = imread("E:/code/box/base_box/1.jpg");
cvtColor(img, img, CV_BGR2GRAY);
Mat Board(windown_height, windown_width, CV_8UC1, Scalar(255));
//從img剪切一塊(內存共享)
Mat rect=img(Rect(1,windown_height - box.rows - 1, 127 - 1+box.cols, box.rows));
//從Board剪切一塊
Mat BoardROI = Board(Rect(1, windown_height - box.rows - 1, 127 - 1 + box.cols, box.rows));
//參數:輸入圖片1,圖片1加權,輸入圖片2,圖片2加權,偏移,輸出圖像
addWeighted(rect, 1, BoardROI, 0, 0., BoardROI);
imshow("show", Board);
waitKey(0);
return 0;
}