Re: [osg-users] Visualization of an image + depth map
On 7 Feb 2011, at 17:06, Chris 'Xenon' Hanson wrote: > On 2/7/2011 5:00 AM, Stefan Walk wrote: >> I'm looking for a way to visualize an image (dimensions somewhere between >> 640x480 and 1280x960) from a calibrated camera + a dense depth map >> (estimated from a stereo pair). With this information, i can compute the 3D >> coordinates of the regions that produced each pixel, and I'd like to >> visualize that. Ideally, when the virtual camera is positioned like the >> physical camera was, the visualization should just look like the image, and >> the 3d structure becomes apparent when moving the camera. Does >> OpenSceneGraph provide a convenient way to do that (I'm unfamiliar with it, >> I'm looking for the right tools to do this task now)? If yes, are there >> examples that are close to what I want to do? I've looked at osgpointsprite, >> which seems kind of appropriate, when i take the blending out and reenable >> the depth test, however the sprites don't change size when the camera is >> moved, is that changeable? > > Is this from a Kinect device, or something similar? Depends on how you define "similar". The Kinect gains depth information by having a laser projector and a camera looking at the projection, in my case I have two camera views (for example from a camera like http://www.ptgrey.com/products/bbxb3/bumblebeeXB3_stereo_camera.asp) and compute the depth map from that. Best regards, Stefan___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Visualization of an image + depth map
On 2/7/2011 5:00 AM, Stefan Walk wrote: > I'm looking for a way to visualize an image (dimensions somewhere between > 640x480 and 1280x960) from a calibrated camera + a dense depth map > (estimated from a stereo pair). With this information, i can compute the 3D > coordinates of the regions that produced each pixel, and I'd like to > visualize that. Ideally, when the virtual camera is positioned like the > physical camera was, the visualization should just look like the image, and > the 3d structure becomes apparent when moving the camera. Does OpenSceneGraph > provide a convenient way to do that (I'm unfamiliar with it, I'm looking for > the right tools to do this task now)? If yes, are there examples that are > close to what I want to do? I've looked at osgpointsprite, which seems kind > of appropriate, when i take the blending out and reenable the depth test, > however the sprites don't change size when the camera is moved, is that > changeable? Is this from a Kinect device, or something similar? > Best regards, > Stefan -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Digital Imaging. OpenGL. Scene Graphs. GIS. GPS. Training. Consulting. Contracting. "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Visualization of an image + depth map
Hi, I'm looking for a way to visualize an image (dimensions somewhere between 640x480 and 1280x960) from a calibrated camera + a dense depth map (estimated from a stereo pair). With this information, i can compute the 3D coordinates of the regions that produced each pixel, and I'd like to visualize that. Ideally, when the virtual camera is positioned like the physical camera was, the visualization should just look like the image, and the 3d structure becomes apparent when moving the camera. Does OpenSceneGraph provide a convenient way to do that (I'm unfamiliar with it, I'm looking for the right tools to do this task now)? If yes, are there examples that are close to what I want to do? I've looked at osgpointsprite, which seems kind of appropriate, when i take the blending out and reenable the depth test, however the sprites don't change size when the camera is moved, is that changeable? Best regards, Stefan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
