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Proceedings Paper

Pseudo-random modulation for multiple 3D time-of-flight camera operation
Author(s): Dong-Ki Min; Ilia Ovsiannikov; Yohwan Noh; Wanghyun Kim; Sunhwa Jung; Joonho Lee; Deokha Shin; Hyekyung Jung; Lawrence Kim; Grzegorz Waligorski; Lilong Shi; Yoondong Park; Chilhee Chung
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Paper Abstract

3D time-of-flight depth cameras utilize modulated light sources to detect the distance to objects as phase information. A serious limitation may exist in cases when multiple depth time-of-flight cameras are imaging the same scene simultaneously. The interference caused by the multiple modulated light sources can severely distort captured depth images. To prevent this problem and enable concurrent 3D multi-camera imaging, we propose modulating the camera light source and demodulating the received signal using sequences of pulses, where the phase of each sequence is varied in a pseudo-random fashion. The proposed algorithm is mathematically derived and proved by experiment.

Paper Details

Date Published: 12 March 2013
PDF: 6 pages
Proc. SPIE 8650, Three-Dimensional Image Processing (3DIP) and Applications 2013, 865008 (12 March 2013); doi: 10.1117/12.2005987
Show Author Affiliations
Dong-Ki Min, Samsung Electronics Co., Ltd. (Korea, Republic of)
Ilia Ovsiannikov, Samsung Semiconductor, Inc. (United States)
Yohwan Noh, Samsung Electronics Co., Ltd. (Korea, Republic of)
Wanghyun Kim, Samsung Electronics Co., Ltd. (Korea, Republic of)
Sunhwa Jung, Samsung Electronics Co., Ltd. (Korea, Republic of)
Joonho Lee, Samsung Electronics Co., Ltd. (Korea, Republic of)
Deokha Shin, Samsung Electronics Co., Ltd. (Korea, Republic of)
Hyekyung Jung, Samsung Electronics Co., Ltd. (Korea, Republic of)
Lawrence Kim, Samsung Electronics Co., Ltd. (Korea, Republic of)
Grzegorz Waligorski, Samsung Semiconductor, Inc. (United States)
Lilong Shi, Samsung Semiconductor, Inc. (United States)
Yoondong Park, Samsung Electronics Co., Ltd. (Korea, Republic of)
Chilhee Chung, Samsung Electronics Co., Ltd. (Korea, Republic of)


Published in SPIE Proceedings Vol. 8650:
Three-Dimensional Image Processing (3DIP) and Applications 2013
Atilla M. Baskurt; Robert Sitnik, Editor(s)

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