2 University of Siegen
3 Microsoft Research
4 University College London
Real-time or online 3D reconstruction has wide applicability and receives further interest due to availability of consumer depth cameras. Typical approaches use a moving sensor to accumulate depth measurements into a single model which is continuously refined. Designing such systems is an intricate balance between reconstruction quality, speed, spatial scale, and scene assumptions. Existing online methods either trade scale to achieve higher quality reconstructions of small objects/scenes. Or handle larger scenes by trading real-time performance and/or quality, or by limiting the bounds of the active reconstruction. Additionally, many systems assume a static scene, and cannot robustly handle scene motion or reconstructions that evolve to reflect scene changes. We address these limitations with a new system for real-time dense reconstruction with equivalent quality to existing online methods, but with support for additional spatial scale and robustness in dynamic scenes. Our system is designed around a simple and flat point-based representation, which directly works with the input acquired from range/depth sensors, without the overhead of converting between representations. The use of points enables speed and memory efficiency, directly leveraging the standard graphics pipeline for all central operations; i.e., camera pose estimation, data association, outlier removal, fusion of depth maps into a single denoised model, and detection and update of dynamic objects. We conclude with qualitative and quantitative results that highlight robust tracking and high quality reconstructions of a diverse set of scenes at varying scales.
Maik Keller, Damien Lefloch, Martin Lambers, Shahram Izadi, Tim Weyrich, Andreas Kolb.
In Proc. of Joint 3DIM/3DPVT Conference (3DV), 8 pages, Seattle, USA, June 2013.
Selected for oral presentation.Maik Keller, Damien Lefloch, Martin Lambers, Shahram Izadi, Tim Weyrich, and Andreas Kolb. Real-time 3d reconstruction in dynamic scenes using point-based fusion. In Proc. of Joint 3DIM/3DPVT Conference (3DV), pages 1–8, June 2013. Selected for oral presentation.Keller, M., Lefloch, D., Lambers, M., Izadi, S., Weyrich, T., and Kolb, A. 2013. Real-time 3d reconstruction in dynamic scenes using point-based fusion. In Proc. of Joint 3DIM/3DPVT Conference (3DV), 1–8. Selected for oral presentation.M. Keller, D. Lefloch, M. Lambers, S. Izadi, T. Weyrich, and A. Kolb, “Real-time 3d reconstruction in dynamic scenes using point-based fusion,” inProc. of Joint 3DIM/3DPVT Conference (3DV), Jun. 2013, pp. 1–8, selected for oral presentation.
This research has partly been funded by the German Research Foundation (DFG), grant GRK-1564 Imaging New Modalities, and by the FP7 EU collaborative project BEAMING (248620). We thank Jens Orthmann for his work on the GPU framework osgCompute.