Hi
Is there any way in Windows MFC to give a non-ascii file name to imwrite?
cv::String appears to be internally represented by char*and Unicode in Windows is UTF-16. Is there a way to convert an UTF-16 string to UTF-8 and put it in a char array? I thought chars in Windows only represents the ascii set?
I'm not the best at encoding so I'm wondering if anyone else has solved this
Thanks
No, you cannot use non-ascii filenames with imwrite (or imread).
Is there a way to convert an UTF-16 string to UTF-8 and put it in a char array?
this sounds quite promising. since it is a windows-only problem, you could use WideCharToMultiByte
When I use WideCharToMultiByte, it does not retain the correct string and on passing it to imwrite, it writes the file with the incorrectly converted string. The resulting string has strange symbols
Here is the code I am trying to use. ws is a std::wstring, and strTo does not get the correct value.
int size = WideCharToMultiByte( CP_UTF8, 0, &ws[0], (int)ws.size(), NULL, 0, NULL, NULL );
std::string strTo( size, 0 );
WideCharToMultiByte( CP_UTF8, 0, &ws[0], (int)ws.size(), &strTo[0], size, NULL, NULL );
How do I know which code page I need? And does this have anything to do with the current language of my Windows install?
I worked out a way around it using imencode to send the image to a vector of uchar and wrote that to file using ostream in my unicode compiled project.
I should have known really because I used imdecode to do the opposite for imread :)
Asked: 2016-09-26 09:57:42 -0600
Seen: 3,186 times
Last updated: Sep 26 '16
