opencv棋盘格照片

opencv棋盘格照片是用于相机标定的一种图案，可以通过OpenCV库或MATLAB创建。棋盘格有两种形状可供选择，分别是7*10方形和16*16正方形。创建棋盘格照片的代码示例如下：

cv::Mat frame = cv::Mat::zeros(240, 330, CV_8UC1);
int nc = frame.channels();
int nWidthOfROI = 30;
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) {
            data[i / nc * nc + 0 = 255;
            data[i / nc * nc + 1 = 255;
            data[i / nc * nc + 2 = 255;
        }
    }
}
imwrite("xx_base.jpg", frame);

以上代码会生成一张名为"xx_base.jpg"的棋盘格照片，其尺寸为330*240像素。该照片中的棋盘格由每个格子大小为30*30像素组成，每行有10个角点，每列有7个角点。<span class="em">1</span><span class="em">2</span>
#### 引用[.reference_title]
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