Accurate 3D reconstruction using multi-phase ToF camera

Ding Liang; Yebin Liu; Wei Yan; Chenggang Yan; Qionghai Dai

doi:10.1117/12.2071837

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4 November 2014 Accurate 3D reconstruction using a multi-phase ToF camera

Ding Liang, Yebin Liu, Wei Yan, Chenggang Yan, Qionghai Dai

Proceedings Volume 9273, Optoelectronic Imaging and Multimedia Technology III; 92733J (2014) https://doi.org/10.1117/12.2071837
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

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.

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Ding Liang, Yebin Liu, Wei Yan, Chenggang Yan, and Qionghai Dai "Accurate 3D reconstruction using a multi-phase ToF camera", Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92733J (4 November 2014); https://doi.org/10.1117/12.2071837

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