Download e-book for kindle: Dynamic 3D Imaging: DAGM 2009 Workshop, Dyn3D 2009, Jena, by Mirko Schmidt, Bernd Jähne (auth.), Andreas Kolb, Reinhard

By Mirko Schmidt, Bernd Jähne (auth.), Andreas Kolb, Reinhard Koch (eds.)

3D imaging sensors were investigated for a number of a long time. lately, - provements on classical techniques akin to stereo imaginative and prescient and dependent gentle at the one hand, and novel time-of-?ight (ToF) suggestions nevertheless have emerged, resulting in 3D imaginative and prescient structures with extensively improvedcharacter- tics. almost immediately, those recommendations make full-range 3D information to be had at interactive body premiums, and therefore open the trail towards a wider software of 3D imaginative and prescient structures. The workshop on Dynamic 3D imaginative and prescient (Dyn3D) was once held together with the yearly convention of the German organization of trend popularity (DAGM) in Jena on September nine, 2009. past workshops during this sequence have desirous about a similar subject, i.e., the Dynamic 3D imaginative and prescient workshopin conjunction with the DAGM convention in 2007 and the CVPR workshop Time of Flight Camera-Based desktop imaginative and prescient (TOF-CV) in 2008. The aim of this year’s workshop, as for the past occasions, was once to represent a platform for researchers operating within the ?eld of real-time variety imaging, the place all points, from sensor assessment to software situations, are addressed. After a really aggressive and fine quality reviewing method, thirteen papers have been approved for book during this LNCS factor. The examine zone on dynamic 3D imaginative and prescient proved to be tremendous energetic. back, as for previous workshops in this ?eld, a number of new insights and novel ways on time-of-?ight sensors, on re- time mono- and multidimensional info processing and on quite a few purposes are provided in those workshop proceedings.

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Additional resources for Dynamic 3D Imaging: DAGM 2009 Workshop, Dyn3D 2009, Jena, Germany, September 9, 2009. Proceedings

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As every child of an octree is an octree itself, subtrees can easily be added to the current scene. In contrast to simple point clouds where in general no measurement fusion is possible, the volumetric representation of the octree allows to fuse the measurements while adding them. In our experiments we use simple colored 3D points with an additional radius component as octree elements and to fuse multiple measurements we average the new and the already existing position and color. Fig. 2. 3 I. Schiller and R.

Zach’s GPU-based implementation allows discontinuity preserving TV-L1 flow estimation in real time and currently hold the second place of the Middlebury’s optical flow ranking [12]. As the quality of the motion compensation relies on the underlying flow estimation, our choice should give the best results in respect to accuracy and runtime currently possible. A complete system overview is given in Fig. 5, consisting of both a lateral as well as an axial motion compensation. Compensation of Motion Artifacts for Time-of-Flight Cameras RAW Images Legend Intensity Adjustment A−B RAW Image Resampling A+B Optical Flow Estimation Motion Estimation Demodulation Depth Image Systematic Error Adj.

We used sinusoidal modulation. The modulation frequency can be varied in the range from 400 kHz to 40 MHz and the phase can be shifted relative to the trigger signal from 0 rad to 2π rad with a resolution of 14 bit. A trigger signal coming from the camera was used for the synchronization with the light source. The light source shifts the phase relatively to the trigger signal coming from the camera. Thereby the light source simulates the distance corresponding to this phase shift δϕLS . In order to achieve a homogeneous illumination a diffusor was mounted between light source and camera.

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