光场相机成像质量评价方法研究  

Study on Imaging Quality Evaluation of Light Field Camera

作　　者：杨凡[1] 袁艳[1] 周志良[2] 

机构地区：[1]北京航空航天大学精密光机电一体化技术教育部重点实验室,北京100191 [2]中国科学技术大学,安徽合肥230026

出　　处：《现代电子技术》2011年第6期4-6,共3页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60972088);长江学者和创新团队发展计划资助(IRT0705)

摘　　要：光场相机应用一种新的成像技术,利用光学手段获取四维光场信息,包括目标辐射的二维空间分布信息和辐射传播的二维方向信息。与传统相机相比,光场相机在实际应用中可以获得大的景深范围。由此成像质量评价是光场相机研究中一项十分关键的工作。结合光场成像的特点,对光场相机成像模型进行了分析,完成了实际系统中的光场追迹过程,并对点扩散模型进行了计算,仿真实验结果表明该评价方法有效。Light field camera is a new imaging device which could capture 4D light field information including both the 2D spatial distribution information of object radiation and 2D directional information of the radiance propagation. It can get larger depth of field than traditional cameras. The imaging quality evaluation is important for researching on light field camera. The imaging model of light field camera is analyzed in combination with the characteristic of light field imaging. The process of light ray tracing in an actual camera was accomplished. The point spread function model was calculated. The experimental results show that the method is accurate and effective.

关 键 词：光场相机 成像模型 点扩散函数 成像质量 

分 类 号：TN919-34[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]