代码如下:
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#include <opencv\cv.h> #include <opencv\highgui.h> #include <iostream> using namespace cv; using namespace std; int main() { Mat frame = imread("3A4.bmp"); // cols*rows = 630*891 int nc = frame.channels(); int nWidthOfROI = 90; for (int j=0;j<frame.rows;j++) { uchar* data= frame.ptr<uchar>(j); for(int i=0;i<frame.cols*nc;i+=nc) { if( (i/nc/nWidthOfROI + j/nWidthOfROI) % 2) { // bgr data[i/nc*nc + 0] = 255 ; data[i/nc*nc + 1] = 255 ; data[i/nc*nc + 2] = 255 ; } } } imshow("test",frame); waitKey(0); return 0; |
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//编程环境:VS2013, X64,OpenCV3.0.0 #include <iostream> #include <opencv2\core\core.hpp> #include <opencv2\opencv.hpp> using namespace std; using namespace cv; int main(){ //单位转换 int dot_per_inch = 96; //我的电脑是96DPI(dot per inch) double cm_to_inch = 0.3937; //1cm=0.3937inch double inch_to_cm = 2.54; //1inch = 2.54cm double inch_per_dot = 1.0 / 96.0; //自定义标定板 double blockSize_cm = 1.3; //方格尺寸:边长1.3cm的正方形 int blockNum = 8; //8*8个方格 int blockSize = (int)(blockSize_cm /inch_to_cm *dot_per_inch); cout << blockSize << endl; int imageSize = blockSize * blockNum; cout << imageSize << endl; Mat chessBoard(imageSize, imageSize, CV_8UC3, Scalar::all(0)); unsigned char color = 0; for (int i = 0; i < imageSize; i = i + blockSize){ color = ~color; for (int j = 0; j < imageSize; j = j + blockSize){ Mat ROI = chessBoard(Rect(i, j, blockSize, blockSize)); ROI.setTo(Scalar::all(color)); color = ~color; } } imshow("Chess board", chessBoard); imwrite("C:\\Users\\ComputerName\\Pictures\\chessBoard.jpg",chessBoard); cvWaitKey(3000); return 0; } |
还有一个,可以用matlab,代码更少~~话说matlab真的好强大~~
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J = (checkerboard(300,4,5)>0.5); figure, imshow(J); |
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