Affiliation:
1. University of Chinese Academy of Sciences
Abstract
Currently single-photon avalanche diode (SPAD) arrays suffer from a small-scale pixel count, which makes it difficult to achieve high-resolution 3D imaging directly through themselves. We established a CCD camera-assisted SPAD array depth imaging system. Based on illumination laser lattice generated by a diffractive optical element (DOE), the registration of the low-resolution depth image gathered by SPAD and the high-resolution intensity image gathered by CCD is realized. The intensity information is used to guide the reconstruction of a resolution-enhanced depth image through a proposed method consisting of total generalized variation (TGV) regularization and temporal-spatial (T-S) filtering algorithm. Experimental results show that an increasement of 4 × 4 times for native depth image resolution is achieved and the depth imaging quality is also improved by applying the proposed method.
Funder
National Natural Science Foundation of China
Key Research and Development Projects of Shaanxi Province
Youth Talents Promotion Program of Xi 'an
State Key Laboratory of Transient Optics and Photonics
Subject
Atomic and Molecular Physics, and Optics
Cited by
10 articles.
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