A Depth Sensor Based on Transient Property of Liquid Crystal Lens

被引:0
作者
Haifeng Xiao
Zhiqiang Liu
Baolin Tan
Mao Ye
机构
[1] University of Electronic Science and Technology of China,School of Optoelectronic Science and Engineering
来源
Photonic Sensors | 2023年 / 13卷
关键词
Liquid crystal lens; transient property; depth from focus; depth sensor;
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中图分类号
学科分类号
摘要
The property of maintaining the lens state of the liquid crystal (LC) lens during the switching between positive and negative lens states is made use of in the fast acquirement of multi-focus images without magnification change. A depth from focus (DFF) pipeline that can generate a low-error depth map and an all-in-focus image is proposed. The depth of the scene is then obtained via DFF pipeline from the captured images. The depth sensor proposed in this paper has the advantages of simple structure, low cost, and long service life.
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  • [1] Grimson W E L(1981)A computer implementation of a theory of human stereo vision Philosophical Transactions of the Royal Society of London. B, Biological Sciences 292 217-253
  • [2] Brenner S(2009)Processing dense stereo data using elevation maps: Road surface, traffic isle, and obstacle detection IEEE Transactions on Vehicular Technology 59 1172-1182
  • [3] Oniga F(2014)Fast and accurate auto-focusing algorithm based on the combination of depth from focus and improved depth from defocus Optics Express 22 31237-31247
  • [4] Nedevschi S(2016)Depth map sensor based on optical doped lens with multi-walled carbon nanotubes of liquid crystal Applied Optics 55 140-147
  • [5] Zhang X(2018)Evaluation of the key design parameters of liquid crystal tunable lenses for depth-from-focus algorithm Applied Optics 57 85-91
  • [6] Liu Z(2005)Liquid crystal lens with focal length variable from negative to positive values IEEE Photonics Technology Letters 18 79-81
  • [7] Jiang M(2020)Transient property of liquid crystal lens and its application in extended depth of field imaging Optics Communications 473 125974-2076
  • [8] Chang M(2014)Shape-from-focus depth reconstruction with a spatial consistency model IEEE Transactions on Circuits and Systems for Video Technology 12 2063-5378
  • [9] Hui L(2015)Variational depth from focus reconstruction IEEE Transactions on Image Processing 24 5369-28420
  • [10] Fan P(2018)Depth from defocus measurement method based on liquid crystal lens Optics Express 26 28413-1432