Hi John, I wrote a osgImage2IplImage, not sure if it could help you, but here it is:
/*! Image conversion functions
Utility functions to convert between different image representations */
IplImage* osgImage2IplImage(const osg::Image& p_osgImage)
{
const unsigned char *buffer = p_osgImage.data();
IplImage* pImg = cvCreateImage(cvSize(p_osgImage.s(), p_osgImage.t()),
IPL_DEPTH_8U, p_osgImage.r() );
if(p_osgImage.r() == 3)
{
struct pixelStruct { unsigned char r, g, b; };
struct pixelStruct* pPixel = ( struct pixelStruct * ) ( buffer );
struct pixelStruct* pCurrentPixel = NULL;
for(int x = 0; x < p_osgImage.s(); x++ ) {
for(int y = 0; y < p_osgImage.t(); y++ ) {
pCurrentPixel = &pPixel[ y * p_osgImage.s() + x ];
int invertedY = p_osgImage.t()-1-y;
// blue
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3] =
pCurrentPixel->b;
// green
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3+1] =
pCurrentPixel->g;
// red
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3+2] =
pCurrentPixel->r;
}
}
}
else if(p_osgImage.r() == 4)
{
struct pixelStruct { unsigned char r, g, b, a; };
struct pixelStruct* pPixel = ( struct pixelStruct * ) ( buffer );
struct pixelStruct* pCurrentPixel = NULL;
for(int x = 0; x < p_osgImage.s(); x++ ) {
for(int y = 0; y < p_osgImage.t(); y++ ) {
pCurrentPixel = &pPixel[ y * p_osgImage.s() + x ];
int invertedY = p_osgImage.t()-1-y;
// alpha
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3] =
pCurrentPixel->a;
// blue
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3+1] =
pCurrentPixel->b;
// green
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3+2] =
pCurrentPixel->g;
// red
((uchar*)(pImg->imageData + pImg->widthStep*invertedY))[x*3+3] =
pCurrentPixel->r;
}
}
}
else
{
osg::notify(osg::NOTICE)<<"osgImage2IplImage: Error, unrecognized image
depth."<<std::endl;
}
return pImg;
}
bill
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of John Steinbis
Sent: Sun 9/16/2007 9:23 PM
To: OpenSceneGraph Users
Subject: [osg-users] Convertion to osg::Image from IplImage (OpenCV) for useas
texture
Hi,
I'm trying to convert an IplImage (OpenCV) type to osg::Image type for
use as a texture within OSG. My conversion routine attempts to utilize
setImage(...) of image class. It crashes and I havent been able to
track down the problem.
Does anyone have experience with a conversion like this or advise
about building osg images from other types? Thank you!
-- John
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