Hi Yashodhan, Since you see the objects in the right place, I think the problem is not the camera pose. Can you send some screenshots so we can understand the problem ? Do you use osgART ? if not, how did you setup the HUD containing the video ?
Mourad On Mon, Mar 1, 2010 at 5:10 PM, Yashodhan Nevatia < [email protected]> wrote: > Hi Mourad, all, > > Thanks a lot for the information. I took a look at the links, and it sort > of helped. > > At the moment I can see the objects in the correct place (shaded faces, > wireframe), however any textures are not displayed correctly. > > I am using the Single Point Active Alignment Method developed at the > Technische Universitat Munich to solve for the camera parameters. > > Thank you, > > Yashodhan > > ----- Original Message ----- > From: "Mourad Boufarguine" <[email protected]> > To: "OpenSceneGraph Users" <[email protected]> > Cc: "Rares Ambrus" <[email protected]> > Sent: Friday, February 26, 2010 1:51:19 PM GMT +01:00 Amsterdam / Berlin / > Bern / Rome / Stockholm / Vienna > Subject: Re: [osg-users] Setting Camera Properties > > > > Hi Yashodhan, > > Take a look at this link > http://old.uvr.gist.ac.kr/wlee/web/techReports/ar/Camera%20Models.html . > It explains the relationship between the real and virtual camera parameters. > > Besides that, you may want to look at osgART. > > Mourad > > > On Fri, Feb 26, 2010 at 1:02 PM, Yashodhan Nevatia < > [email protected] > wrote: > > > Hi everyone, > > I am pretty new to OSG, and have been trying to create an application that > uses OSG for Augmented Reality. I am using OSG 2.8.1. > > In order for the augmented reality to be rendered properly, I need to set > up the OSG camera with parameters for the human eye (the application uses an > optical see through screen to display the augmented information, the > background/reality is observed through the display). > > I am setting the position and orientation as the view matrix, this seems to > work fine. > > What I am having some trouble with is setting up the projection matrix. As > far as I know, this is where I have to include the internal parameters of > the camera being modeled. > > For a simple set up this includes the focal distances (along the axes of > the image plane) and the center of the image plane, and is described by the > matrix: > > fx 0 cx > 0 fy cy > 0 0 1 > > > If anyone could help me out here, it would be greatly appreciated. > > Thank you, > > Yashodhan > > > -- > Yashodhan Nevatia > Systems Engineer > > Space Applications Services > Leuvensesteenweg 325 > B-1932 Zaventem > Belgium > Tel: +32 (0)2-721.54.84 > Fax: +32 (0)2-721.54.44 > URL: www.spaceapplications.com > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- > Yashodhan Nevatia > Systems Engineer > > Space Applications Services > Leuvensesteenweg 325 > B-1932 Zaventem > Belgium > Tel: +32 (0)2-721.54.84 > Fax: +32 (0)2-721.54.44 > URL: www.spaceapplications.com > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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