[英]Is there a way to use OpenCV Mat_ with custom class?
我在OpenCV中有一些算法,我想使用定點值表示法重寫它。 我在這里找到了定點算術類: https : //github.com/eteran/cpp-utilities 。 我想知道是否有一些優雅的方法可以將Mat_模板類與Fixed類對象(或任何自定義類)一起用作Mat的內容。 當我使用時:
cv::Mat_<cv::Vec<Fixed<12, 4>, 3>> num;
我遇到以下錯誤:
Error C2039 'value' : is not a member of 'cv::DataDepth<numeric::Fixed<0x0c,0x04>>' opencv_hog D:\libs\x64\opencv_2_4_13\build\include\opencv2\core\core.hpp 1134
Error C2065 'value' : undeclared identifier opencv_hog D:\libs\x64\opencv_2_4_13\build\include\opencv2\core\core.hpp 1134
Error C2039 'fmt' : is not a member of 'cv::DataDepth<numeric::Fixed<0x0c,0x04>>' opencv_hog D:\libs\x64\opencv_2_4_13\build\include\opencv2\core\core.hpp 1135
Error C2065 'fmt' : undeclared identifier opencv_hog D:\libs\x64\opencv_2_4_13\build\include\opencv2\core\core.hpp 1135
Error C2056 illegal expression opencv_hog D:\libs\x64\opencv_2_4_13\build\include\opencv2\core\core.hpp 1135
正如評論中提到的,我需要定義模板專業化:
template<size_t I, size_t F> class cv::DataType<Fixed<I, F>>
{
public:
typedef Fixed<I, F> value_type;
typedef Fixed<I, F> work_type;
typedef Fixed<I, F> channel_type;
enum {
channels = 1,
depth = I + F,
type = CV_MAKETYPE(depth, channels)
};
};
到目前為止,它似乎工作正常。 例如,我可以寫:
cv::Mat_<Fixed<13, 3>> fixed = cv::Mat_<Fixed<13, 3>>::zeros(10, 10);
fixed(1, 1) = 2.4;
std::cout << fixed(0, 0) << std::endl;
std::cout << fixed(1, 1) << std::endl;
這將輸出:
0.0
2.375
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