Function cvSetImageCOI

deps/opencv/modules/core/src/array.cpp:3069–3089

CV_IMPL void
cvSetImageCOI( IplImage* image, int coi )
{
    if( !image )
        CV_Error( CV_HeaderIsNull, "" );

    if( (unsigned)coi > (unsigned)(image->nChannels) )
        CV_Error( CV_BadCOI, "" );

    if( image->roi || coi != 0 )
    {
        if( image->roi )
        {
            image->roi->coi = coi;
        }
        else
        {
            image->roi = icvCreateROI( coi, 0, 0, image->width, image->height );
        }
    }
}


CV_IMPL int