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	Depth extraction of low-texture region using a light field camera
	Zhao, Hongying ; Zheng, Miao ; Yang, Peng ; Zhao, Shoujiang
刊名	OPTICAL ENGINEERING
	2017
关键词	light field depth extraction low texture partition ratio of triangle grids area TRIANGULATION ALGORITHMS DISTANCE
DOI	10.1117/1.OE.56.7.073110
英文摘要	A method is proposed for depth extraction of low-texture region with a light field (LF) camera, which expands the application. Based on the analysis of LF data, it is proven that the depth information can be estimated from a single LF image. Furthermore, as the lenslet LF data can be decoded into a subimages array, and the relationship among subimages is proven to be affine transformation, we used the geometry relationship, which is represented by partition ratio of triangle grids area, to replace the unreliable gray value of low-texture region for stereo matching. In addition, to obtain accurate ratio values, preset points are projected to enrich the texture with a projector, which is convenient and reliable. The proposed method improves the accuracy of the depth extraction obviously at low-texture region compared with the traditional state-of-the-art LF method, and results are validated by experiments. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE); National Natural Science Foundation of China [61672043]; National Key RD Plan [SQ2017YFGX040110]; SCI(E); ARTICLE; 7; 56
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472314]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhao, Hongying,Zheng, Miao,Yang, Peng,et al. Depth extraction of low-texture region using a light field camera[J]. OPTICAL ENGINEERING,2017.
APA	Zhao, Hongying,Zheng, Miao,Yang, Peng,&Zhao, Shoujiang.(2017).Depth extraction of low-texture region using a light field camera.OPTICAL ENGINEERING.
MLA	Zhao, Hongying,et al."Depth extraction of low-texture region using a light field camera".OPTICAL ENGINEERING (2017).

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