Archive for November, 2010

Kinect experiment with Ogre3D

November 20th, 2010

I’ve just bought a Kinect and decided to do some experiment with it:

This demo is a ripp-off the Kinect-v11 demo made by Zephod. In fact I’ve designed a new Ogre::Kinect library that provide Kinect connection through Zephod library. Then I’ve replace the Zephod OpenGL demo by an Ogre3D demo using my library. The nice part is that I’ve managed to move some depth to rgb conversion to the GPU (using pixel shader).

Links

Binary demo: OgreKinectDemo1.zip
Source code: svn on code.google
Documentation: doxygen
License: MIT

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PhotoSynthToolkit results

November 19th, 2010

This is just a small post to show you want kind of results you can get with my PhotoSynthToolkit:

Download location and source code introduced in my previous post.

 
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PhotoSynth Toolkit updated

November 9th, 2010

Overview

I have updated my PhotoSynth toolkit for easier usage (the same way as SFMToolkit). This is an example of dense mesh creation from 12 pictures using this toolkit:

The 12 pictures were shot with a Canon PowerShot A700:

Thanks to this toolkit, PMVS2 and MeshLab you can create a dense mesh from these 12 pictures:

triangulated mesh with vertex color -> triangulated mesh with vertex color and SSAO -> triangulated mesh shaded with SSAO -> triangulated mesh wireframe -> photosynth sparse point cloud
(sparse point cloud : 8600 vertices, dense point cloud: 417k vertices, mesh: 917k triangles)

 

You can also take a loot at the PhotoSynth reconstruction of the sculpture.

PhotoSynthToolkit is composed of several programs:

  • PhotoSynthDownloader: download PhotoSynth point cloud and cameras parameters
  • PhotoSynth2PMVS: enable to run PMVS2 with a downloaded PhotoSynth point cloud
  • PMVS2 : http://grail.cs.washington.edu/software/pmvs/ created by Yasutaka Furukawa
  • PhotoSynthViewer: Ogre3D PhotoSynth viewer [not working yet]

Download

The source code is available under MIT license on my github. I have also released a win32 binary version with windows scripting (WSH) for easier usage: PhotoSynthToolkit4.zip.

Help

If you need some help or just want to discuss about photogrammetry, please join the photogrammetry forum created by Olafur Haraldsson. You may also be interested by Josh Harle’s video tutorials, they are partially out-dated due to the new PhotoSynthToolkit version but these videos are very good to learn how to use MeshLab.

Please go to the PhotoSynthToolkit page to get the latest version

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Structure From Motion Toolkit released

November 5th, 2010

Overview

I have finally released my Structure-From-Motion Toolkit (SFMToolkit). So what can you do with it ? Let’s say you have a nice place like the one just bellow:

Place de la Bourse, Bordeaux, FRANCE (picture from Bing)
 

Well, now you can take a lot of pictures of the place (around 50 in my case):

 

And then compute structure from motion and get a sparse point cloud using Bundler:

Finally you have a dense point cloud divided in cluster by CMVS and computed by PMVS2:

You can also take a loot at the PhotoSynth reconstruction of the place with 53 pictures and 26 (without the fountain).

This is the SFMToolkit workflow:

SFMToolkit is composed of several programs:

Download

As you can see this “toolkit” is composed of several open-source component. This is why I have decided to open-source my part of the job too. You can download the source code from the SFMToolkit github. You can also download a pre-compiled x64 version of the toolkit with windows scripting (WSH) for easier usage (but not cross-platform): SFMToolkit1.zip.

Help

If you need some help or just want to discuss about photogrammetry, please join the photogrammetry forum created by Olafur Haraldsson. You may also be interested by Josh Harle’s video tutorials, they are partially out-dated due to the new SFMToolkit but these videos are very good to learn how to use MeshLab.

Please go to the SFMToolkit page to get the latest version

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