OpenCV to use in memory buffers or file pointers

Question

The two functions in openCV cvLoadImage and cvSaveImage accept file path\'s as arguments.

For example, when saving a image it\'s cvSaveImage(\"/tmp/output.j

Answer 1

There are a couple of undocumented functions in the SVN version of the libary:

CV_IMPL CvMat* cvEncodeImage( const char* ext, 
                              const CvArr* arr, const int* _params )

CV_IMPL IplImage* cvDecodeImage( const CvMat* _buf, int iscolor )

Latest check in message states that they are for native encoding/decoding for bmp, png, ppm and tiff (encoding only).

Alternatively you could use a standard image encoding library (e.g. libjpeg) and manipulate the data in the IplImage to match the input structure of the encoding library.