Title
Pseudo-random modulation for multiple 3D time-of-flight camera operation
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.
Year
DOI
Venue
2013
10.1117/12.2005987
Proceedings of SPIE
Keywords
Field
DocType
Time-of-flight,depth camera,multi-camera interference,random modulation
Computer graphics (images),Camera auto-calibration,Modulation,Interference (wave propagation),Artificial intelligence,Pseudorandom number generator,Computer vision,Optics,Time-of-flight camera,Time of flight,Light source,Physics,Three-CCD camera
Conference
Volume
ISSN
Citations 
8650
0277-786X
0
PageRank 
References 
Authors
0.34
0
13
Name
Order
Citations
PageRank
Dongki Min101.35
ilia ovsiannikov200.68
yohwan noh300.34
wanghyun kim401.01
sunhwa jung500.34
joonho lee600.34
deokha shin700.68
hyekyung jung800.34
Lawrence H. Kim9686.47
Grzegorz Waligorski1000.68
Lilong Shi1100.68
Yoondong Park12144.16
Chilhee Chung13175.13