光学学报, 2016, 36 (5): 0511003, 网络出版: 2016-05-03   

基于衍射追迹的集成成像重构算法

Computational Reconstruction Algorithm for Integral Imaging Based on Diffraction Tracing
作者单位
苏州大学物理与光电能源学部, 江苏 苏州 215006
摘要
衍射受限集成成像光线追迹算法所重构的深度平面是物体深度的重聚焦图像,重构图像像质模糊,不利于物体的三维重构。针对这些问题,提出了一种基于衍射追迹的深度平面重构算法,由菲涅耳衍射公式计算物空间点源传播至成像系统各平面的光场分布,最终求得每个采样点在传感器上的光强脉冲响应,通过反解与光强脉冲响应相关的线性方程组,实现物体深度平面的图像重构。仿真结果表明,采用该方法实现的重构图像是物体的深度平面切片,而且图像像质接近于原始图像,有利于物体的三维重建。
Abstract
Depth plane reconstructed by ray tracing algorithm in diffraction limited integral imaging is the refocused image of the object depth. But the image quality is blurring, which is not conducive to three dimensional reconstruction of the object. To solve these problems, a depth plane reconstruction algorithm based on diffraction tracing is proposed. The light field distribution on each optical element surface in the imaging system spread from the point source of the object space, is orderly calculated by the Fresnel diffraction formula, and the intensity pulse response of each sample point on the sensor is obtained finally. Depth plane image is reconstructed by solving the linear equation group related to the intensity pulse response. The simulation results show that the reconstructed image is depth slice of the object, and the image quality is close to the original image, which is beneficial to three dimensional reconstruction of the object.

范广飞, 陈林森, 魏国军, 顾新宇. 基于衍射追迹的集成成像重构算法[J]. 光学学报, 2016, 36(5): 0511003. Fan Guangfei, Chen Linsen, Wei Guojun, Gu Xinyu. Computational Reconstruction Algorithm for Integral Imaging Based on Diffraction Tracing[J]. Acta Optica Sinica, 2016, 36(5): 0511003.

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