摘要
This paper presents a novel 3D measurement method for a light field camera(LFC)in which 3D information of object space is encoded by a microlens array(MLA).The light ray corresponding to each pixel of the LFC is calibrated.Once the matching points from at least two subviews exhibit sub-pixel accuracy,the 3D coordinates can be calculated optimally by intersecting light rays of these points matched through phase coding.Moreover,the proposed method obtains high-resolved results that exceed the subview resolution due to the virtual continuous phase search strategy.Finally,we combine the LFC and coaxial projection to solve the 3D data loss caused by shadowing and occlusion problems.Experimental results verify the feasibility of the proposed method,and the measurement error is about 30μm in a depth range of 60 mm.
出处
《激光与光电子学进展》
CSCD
北大核心
2023年第8期261-267,共7页
Laser & Optoelectronics Progress
基金
国家重大科研仪器研究项目(61827815)
广东省重点领域研发计划(2019B010138002)
深圳技术大学校企合作项目(2018010802013)
深圳技术大学研究生校企合作项目(XQHZ202012)。