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Proceedings Paper

Accurate 3D reconstruction using multi-phase ToF camera
Author(s): Ding Liang; Yebin Liu; Wei Yan; Chenggang Yan; Qionghai Dai
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Paper Abstract

The depth quality of a time-of-flight (ToF) camera is influenced by many systematic and non-systematic errors1. In this paper we present a simple method to correct and reduce these errors and propose a multi-phase approach to improve the depth acquisition accuracy. Compared with traditional calibration methods, we take the position of light source into account, and calibrate the light source together with the camera to reduce depth distortion. To ameliorate the sensor errors caused in the manufacturing process, a Look-up Table (LUT) is used to correct pixel-related errors. Besides, we capture images with multiple phases and apply FFT to get the true depth. By the proposed approach, we are able to reconstruct an accurate 3D model with RMSE of the measured depth belowing 1.2mm.

Paper Details

Date Published: 4 November 2014
PDF: 7 pages
Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92733J (4 November 2014); doi: 10.1117/12.2071837
Show Author Affiliations
Ding Liang, Tsinghua Univ. (China)
Yebin Liu, Tsinghua Univ. (China)
Wei Yan, Tsinghua Univ. (China)
Chenggang Yan, Tsinghua Univ. (China)
Qionghai Dai, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 9273:
Optoelectronic Imaging and Multimedia Technology III
Qionghai Dai; Tsutomu Shimura, Editor(s)

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