Hu Xiaoming, Li Zhuotong, Miao Li, Fang Fengzhou, Jiang Zhongjie, Zhang Xiaodong
State Key Laboratory of Precision Measuring Technology & Instruments, Laboratory of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China.
Beijing Jumper Science Ltd., Beijing 100036, China.
Sensors (Basel). 2023 Jul 31;23(15):6812. doi: 10.3390/s23156812.
Visual measurement methods are extensively used in various fields, such as aerospace, biomedicine, agricultural production, and social life, owing to their advantages of high speed, high accuracy, and non-contact. However, traditional camera-based measurement systems, relying on the pinhole imaging model, face challenges in achieving three-dimensional measurements using a single camera by one shot. Moreover, traditional visual systems struggle to meet the requirements of high precision, efficiency, and compact size simultaneously. With the development of light field theory, the light field camera has garnered significant attention as a novel measurement method. Due to its special structure, the light field camera enables high-precision three-dimensional measurements with a single camera through only one shot. This paper presents a comprehensive overview of light field camera measurement technologies, including the imaging principles, calibration methods, reconstruction algorithms, and measurement applications. Additionally, we explored future research directions and the potential application prospects of the light field camera.
视觉测量方法因其具有高速、高精度和非接触等优点，在航空航天、生物医学、农业生产和社会生活等各个领域得到了广泛应用。然而，传统的基于相机的测量系统依赖于针孔成像模型，在使用单个相机一次性实现三维测量方面面临挑战。此外，传统视觉系统难以同时满足高精度、高效率和紧凑尺寸的要求。随着光场理论的发展，光场相机作为一种新型测量方法受到了广泛关注。由于其特殊结构，光场相机仅通过一次拍摄就能用单个相机实现高精度三维测量。本文全面概述了光场相机测量技术，包括成像原理、校准方法、重建算法和测量应用。此外，我们还探讨了光场相机未来的研究方向和潜在应用前景。
