Hi,
What I did:
I created a class in which I setted frames from the video as textures (using
setImage), and refreshed these textures using a callback.
It works fine, but is maybe unadapted to your problem.
About setImage: I used GL_RGB8 where you tried "3", and GL_BGR as the following
argument (I guess OpenCV has a different convention).
Ugras Erdogan wrote:
> Dear All,
> I am using openCV and OSG together in my project. What the problem is as
> follows:
> 1) When I try to convert the IplImage to osg::Image the following command
> line trace occurs. Except the last three lines, the trace shows the openCV
> and osg image properties.
>
> Pixel Bits: 32, Image Size (Byte): 307200
> Video Depth: 1
> cv Channels = 3
> Convert_OpenCV_to_OSG_IMAGE()::Origin Passed 2...
> Mutex w/r : 0
> error pixelFormat = error pixelFormat = 33
> Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
> Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,)
>
> 2) I lock the mutex in order to prevent simultaneous writes to osg::Image
> data and as you can see at 5th line above it returns the correct value 0.
> Then use the following code:
>
> void Convert_OpenCV_to_OSG_IMAGE(IplImage* cvImg, osg::Image* osgImg)
> {
> //.....
> osgImg->setImage(cvImg->width,
> cvImg->height,
> 1,
> 3,
> GL_RGB,
> GL_UNSIGNED_BYTE,
> (unsigned char*)(cvImg->imageData),
> osg::Image::AllocationMode::NO_DELETE,
> 1);
> //.....
> }
> The above code segment is similar to the one in a post I encountered in this
> forum (John Steinbis jsteinbis at gmail.com
> (osg-users%40lists.openscenegraph.org?Subject=%5Bosg-users%5D%20Convertion%20to%20osg%3A%3AImage%20from%20IplImage%20%28OpenCV%29%20for%0A%09useas%20texture&In-Reply-To=E4D07AB09F5F044299333C8D0FEB45E9042314AE%40nrccenexb1.nrc.ca)
> Mon Sep 17 11:04:04 PDT 2007) but there are modifications for my needs. I can
> be sure that cvImg->imageData contains the actual processed video data
> because I can see the results in a seperate window. But the above problem
> occurs when I try to render the processed video as a texture onto a surface.
>
> 3) The above function Convert_OpenCV_to_OSG_IMAGE() is called in the main
> loop as follows:
>
> while(!viewer.done())
> {
> //.....
> getPixelBufferObject()->setImage(Convert_OpenCV_to_OSG_IMAGE(pImage,
> ((osg::Image*)(video.get()))));
>
>
> //.....
> }
> What might be the problem? When I disable the code segment
>
>
> osgImg->setImage(cvImg->width,
> cvImg->height,
> 1,
> 3,
> GL_RGB,
> GL_UNSIGNED_BYTE,
> (unsigned char*)(cvImg->imageData),
> osg::Image::AllocationMode::NO_DELETE,
> 1);
>
> everything is OK but as you can guess I cannot use the processed frame as a
> texture in 3D environment.
> Thanks for your helps...
> Best Regards
> Ugras Erdogan
>
> ------------------
> Post generated by Mail2Forum
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=12381#12381
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