Hi Julien, The application I am building models augmented reality for a see through display. Therefore the camera must integrate the position of the person, as well as camera (intrinsic) parameters that reflect the users eye+display combination. These I derive using 2D-3D correspondences based on the Single Point Active Alignment method developed at Technical University of Munich. Since the camera parameters already model a perspective position, the camera parameters are meant to be used with an orthogonal projection.
Initially (before I apply parameters corresponding to the eye), the models appear fine: Pose matrix: based on the tracked location and orientation of the head The camera view matrix is updated as follows: Pose x Default transform The camera projection matrix is set to (not changed) a perspective projection (created using OSG) After the calibration procedure is performed/applied, the models are not textured well: Calibration matrix: models the position and orientation transform from the tracked point to the head, as well the eye View matrix: Pose x Calibration matrix Projection matrix: orthogonal projection The models are loaded using a Collada plugin (though there are also problems when I create the model myself following the osgteapot example). I dont change any other parameters except the camera parameter mentioned above, that is the model properties and statesets remain the same. Thank you, Yashodhan ----- Original Message ----- From: "Julien Valentin" <[email protected]> To: [email protected] Sent: Thursday, February 18, 2010 7:23:52 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna Subject: Re: [osg-users] Problem displaying textures I think you have to give the code: camera stateset and viewer settings ... or try to use a manipulator if you think you fails with your perspective settings ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=24368#24368 _______________________________________________ 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
