访问OpenCV Mat CV_16UC1的元素

Question

i tried with the following line code: 我尝试使用以下行代码：

image.at<char>(row, column);
image.at<uchar>(row, column);
image.at<unsigned char>(row, column);
image.at<double>(row, column);

what is wrong? 怎么了？

after that, i need to convert this value to a float. 之后，我需要将此值转换为浮点数。 A casting is enough? 铸造就够了吗？

Answer 1

CV_16UC1 has unsigned short as an underlying type, so you probably need CV_16UC1将unsigned short作为基础类型，因此您可能需要

unsigned short val = image.at<unsigned short>(row, column);

And yes, you can simply static cast that to a float afterwards: 是的，之后您可以简单地将其静态转换为浮点数：

float fval = static_cast<float>(val);