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A novel 2.5D pattern for extrinsic calibration of ToF and camera fusion system
Cited 19 time in
Web of Science
Cited 25 time in Scopus
- Authors
- Issue Date
- 2011
- Publisher
- IEEE
- Citation
- IEEE International Conference on Intelligent Robots and Systems, pp.3290-3296
- Abstract
- Recently, many researchers have made efforts for accurate calibration of a Time-of-Flight camera to fully utilize its provided depth values. Yet most previous works focus mainly on intrinsic calibration by modeling its systematic errors and noises while extrinsic calibration is also an important factor when constructing sensor fusion system. In this paper, we present a calibration process that can correctly transfer the depth measurements onto the color image. We use 2.5D pattern so that sufficient reprojection error can be considered for both color and ToF cameras. The issues on obtaining the correct correspondences for this pattern are discussed. In the optimization stage, the depth constraint is also employed to ensure the depth measurements to lie on the pattern plane. The strengths of the proposed method over previous approaches are evaluated in several robotic applications which require precise ToF and camera calibration. © 2011 IEEE.
- ISSN
- 2153-0858
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