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Posted by =?ISO-8859-1?Q?Werner_M=FCller on December 18, 2008, 3:37 am
> Werner Müller wrote:
> > Dear Newsgroup-Members,
> > I want to extract 3D information from either two or more images or
> > video. It is sufficient to have approximated 3D information thus I do
> > not need a full 3D model, but the depth information is sufficient
> > (e.g. like disparity maps).
> > I have implemented/tested several algorithms from epipolar geometry
> > for uncalibrated stereo pictures but even with hand-marked points from
> > both images the quality is horrible (at least for non-example images).
> > So, what is the current state of the art work (papers, demos, etc.)
> > for extraction of depth information from a) multiple images and b)
> > video?
> > Are there any demos/source code out there to try?
> > I am looking forward to your suggestions, as I do not know how to
> > continue at the moment.
> This is a topic I keep meaning to experiment with... You might try
> SIFT or SURF for automated feature extraction and matching. Having
> more keypoints may improve the model quality. Also check whether SLAM
> techniques apply to your problem, especially for the video processing;
> openslam.org may be a good start.
> Have you tried the EGT?http://egt.dii.unisi.it/
> - Daniel
Yes, I already tried EGT. At the moment I am working with SURFs but
probably I could improve the SURF-point-matching between images.
Btw: Thanks for the SLAM-link.
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>
> I want to extract 3D information from either two or more images or
> video. It is sufficient to have approximated 3D information thus I do
> not need a full 3D model, but the depth information is sufficient
> (e.g. like disparity maps).
>
> I have implemented/tested several algorithms from epipolar geometry
> for uncalibrated stereo pictures but even with hand-marked points from
> both images the quality is horrible (at least for non-example images).
>
> So, what is the current state of the art work (papers, demos, etc.)
> for extraction of depth information from a) multiple images and b)
> video?
> Are there any demos/source code out there to try?
>
> I am looking forward to your suggestions, as I do not know how to
> continue at the moment.