| 基于掩膜的光场成像仿真及采样研究 |
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| 引用本文： | 常雷,袁艳,张修宝,周志良.基于掩膜的光场成像仿真及采样研究[J].光子学报,2014,39(6):1104-1110. |
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| 作者姓名： | 常雷 袁艳 张修宝 周志良 |
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| 作者单位： | （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） |
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| 基金项目： | 长江学者和创新团队发展计划（IRT0705）、国家863计划项目和国家自然科学基金（60972088）资助 |
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| 摘 要： | 从原理上分析了掩膜的光场成像特点,通过建立光场成像的计算机仿真模型,模拟四维光场的获取,并通过数字对焦算法获得离焦物体的清晰图像.同时利用采样定理分析了孔径采样密度对数字对焦图像的影响,计算出合适的采样间隔对仿真模型的复杂度进行优化.
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| 关 键 词： | 掩膜 光场成像 采样 仿真 |
| 收稿时间： | 2009-09-12 |
Research on Sampling and Computer Simulation of Mask-based Light Field Photography |
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| CHANG Lei,YUAN Yan,ZHANG Xiu-Bao,ZHOU Zhi-Liang.Research on Sampling and Computer Simulation of Mask-based Light Field Photography[J].Acta Photonica Sinica,2014,39(6):1104-1110. |
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| Authors: | CHANG Lei YUAN Yan ZHANG Xiu-Bao ZHOU Zhi-Liang |
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| Institution: | (Beihang University,Key Laboratory of Precision Opto-mechatronics Technology,Ministry of Education,Beijing 100191) |
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| Abstract: | Light field photography is a new imaging technology with a patterned mask inserted between lens and sensor in a conventional camera.The mask attenuates the incident light rays and the sensor records both 2D spatial and 2D directional information.Sharp images at different depths could be calculated from reconstructed 4D light field.This paper establishes computer modeling of light field camera,and proposes a method of reducing computational amount due to sampling theorem on the premise of image quality assurance.It is proved in the computer simulation. |
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| Keywords: | Mask Light Field image Sampling Simulation |
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