2

我想将点存储到一个opencv矩阵(cv::Mat),这可能吗?我已经用这段代码试过了:

cv::Mat_<cv::Point> matPoint;
matPoint.at<cv::Point>(0) = cv::Point(2,2);
std::cout << matPoint.at<cv::Point>(0) << std::endl;

实际上,它编译成功,但是当我运行代码时,我得到了“浮点异常”。我知道我上面的代码是错误的,但我不知道其他方法。

任何帮助,将不胜感激。谢谢

4

2 回答 2

2

正确的方法是:

// Create 1x1 matrix and initialize all elements with (0,0)
cv::Mat_<cv::Point> matPoint(1, 1, cv::Point(0, 0));

// Access the element with index 0
matPoint(0) = cv::Point(2, 2);

// Alternative syntax for targeting the elements by their two-dimensional index:
std::cout << matPoint(0, 0) << std::endl;

语法也应该有效,.at<cv::Point>(0)但不太方便。

于 2013-05-19T10:50:31.577 回答
2

另一个版本:

cv::Mat_<cv::Point> matPoint;
matPoint.push_back(Point(2,2));
于 2013-05-19T11:24:41.880 回答