在矩阵上赋值
在矩阵上赋值
提问于 2016-10-21 20:51:38
我遇到了c++的问题。我的想法是用预定义的摄像机校准值填充一个固有的矩阵，但我似乎没有正确地完成它。
Mat intrinsic_Matrix(3,3, CV_64F);
float fx = (4032 * 4)/6.69; //2410.76
float fy = (3024 * 4)/5.55; //2179.45
float cx = 2016.0;
float cy = 1512.0;
cout << intrinsic_Matrix << endl;
cout << endl;
intrinsic_Matrix.at<float>(0,0) = fx;
intrinsic_Matrix.at<float>(0,1) = 0.0;
intrinsic_Matrix.at<float>(0,2) = cx;
intrinsic_Matrix.at<float>(1,0) = 0.0;
intrinsic_Matrix.at<float>(1,1) = fy;
intrinsic_Matrix.at<float>(1,2) = cy;
intrinsic_Matrix.at<float>(2,0) = 0.0;
intrinsic_Matrix.at<float>(2,1) = 0.0;
intrinsic_Matrix.at<float>(2,2) = 1.0;
cout << intrinsic_Matrix << endl;
calibrateCamera(frameWorldPoints, bothImagePoints, cvSize(referimages[0].image.cols, referimages[0].image.rows), intrinsic_Matrix, distortion_coeffs, rvecs, tvecs, CV_CALIB_USE_INTRINSIC_GUESS);这两种打印的输出没有什么意义。看起来我在看指针值或未初始化的值。另外，当我试图校准它时，opencv会抛出一个“内在矩阵不正确”的异常，所以我确信它不是我打印的错误。
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-10-21 21:38:42
你用64F初始化垫子，但使用浮点数。要么改为32F，如下所示
Mat intrinsic_Matrix(3,3, CV_32F);
float fx = (4032 * 4)/6.69; //2410.76
float fy = (3024 * 4)/5.55; //2179.45
float cx = 2016.0;
float cy = 1512.0;
cout << intrinsic_Matrix << endl;
cout << endl;
intrinsic_Matrix.at<float>(0,0) = fx;
intrinsic_Matrix.at<float>(0,1) = 0.0;
intrinsic_Matrix.at<float>(0,2) = cx;
intrinsic_Matrix.at<float>(1,0) = 0.0;
intrinsic_Matrix.at<float>(1,1) = fy;
intrinsic_Matrix.at<float>(1,2) = cy;
intrinsic_Matrix.at<float>(2,0) = 0.0;
intrinsic_Matrix.at<float>(2,1) = 0.0;
intrinsic_Matrix.at<float>(2,2) = 1.0;
cout << intrinsic_Matrix << endl;
calibrateCamera(frameWorldPoints, bothImagePoints, cvSize(referimages[0].image.cols, referimages[0].image.rows), intrinsic_Matrix, distortion_coeffs, rvecs, tvecs, CV_CALIB_USE_INTRINSIC_GUESS);或
将所有变量更改为双倍，将intrinsic_matrix初始化为64F
Mat intrinsic_Matrix(3,3, CV_64F);
double fx = (4032 * 4)/6.69; //2410.76
double fy = (3024 * 4)/5.55; //2179.45
double cx = 2016.0;
double cy = 1512.0;
cout << intrinsic_Matrix << endl;
cout << endl;
intrinsic_Matrix.at<double>(0,0) = fx;
intrinsic_Matrix.at<double>(0,1) = 0.0;
intrinsic_Matrix.at<double>(0,2) = cx;
intrinsic_Matrix.at<double>(1,0) = 0.0;
intrinsic_Matrix.at<double>(1,1) = fy;
intrinsic_Matrix.at<double>(1,2) = cy;
intrinsic_Matrix.at<double>(2,0) = 0.0;
intrinsic_Matrix.at<double>(2,1) = 0.0;
intrinsic_Matrix.at<double>(2,2) = 1.0;
cout << intrinsic_Matrix << endl;页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/40185264
复制相关文章
相似问题
腾讯云开发者
Copyright © 2013 - 2026 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有
深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 
粤公网安备44030502008569号
腾讯云计算（北京）有限责任公司 京ICP证150476号 | 京ICP备11018762号