Title
Phase disambiguation using spatio-temporally modulated illumination in depth sensing.
Abstract
Phase ambiguity is a major problem in the depth measurement in either time-of-flight or phase shifting. Resolving the ambiguity using a low frequency pattern sacrifices the depth resolution, and using multiple frequencies requires a number of observations. In this paper, we propose a phase disambiguation method that combines temporal and spatial modulation so that the high depth resolution is preserved while the number of observation is kept. A key observation is that the phase ambiguities of temporal and spatial domains appear differently with respect to the depth. Using this difference, the phase can disambiguate for a wider range of interest. We develop a prototype to show the effectiveness of our method through real-world experiments.
Year
DOI
Venue
2020
10.1186/s41074-020-00063-x
IPSJ Transactions on Computer Vision and Applications
Keywords
DocType
Volume
Time-of-flight camera, Phase shifting, Computational photography
Journal
12
Issue
ISSN
Citations 
1
1882-6695
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Takahiro Kushida101.69
Kenichiro Tanaka2106.30
Takahito Aoto312117.53
Takuya Funatomi47424.62
Yasuhiro Mukaigawa547853.31