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 | 1 | initial version |
please try to avoid writing for-loops and per-pixel access like that. it's slow and error prone, you already got x and y wrong, and the type is most likely not uchar.
if the type of that Mat is CV_8U or CV_16U (check !) , you can simply save it as an image:
Mat canny = ...
imwrite("my.png", canny); // png or tif support 16bit !
Mat c = imread("my.png", IMREAD_ANYCOLOR);
else, rather use opencv's FileStorage
// write
FileStorage fs("canny..yml", FileStorage::WRITE);
fs << "canny" << canny;
fs.release();
// read
FileStorage fs("canny..yml", FileStorage::READ);
fs["canny"] >> canny;
fs.release();
| | 2 | No.2 Revision |
please try to avoid writing for-loops and per-pixel access like that. it's slow and error prone, you already got x and y wrong, and the type is most likely not uchar.
if the type of that Mat is CV_8U or CV_16U (check !) , you can simply save it as an image:
Mat canny = ...
imwrite("my.png", canny); // png or tif support 16bit !
Mat c = imread("my.png", IMREAD_ANYCOLOR);
else, rather use opencv's FileStorage
// write
FileStorage fs("canny..yml", fs("canny.yml", FileStorage::WRITE);
fs << "canny" << canny;
fs.release();
// read
FileStorage fs("canny..yml", fs("canny.yml", FileStorage::READ);
fs["canny"] >> canny;
fs.release();