Qian Wentong, Li Hui, Wu Yuntao
Opt Express. 2020 Apr 27;28(9):12542-12557. doi: 10.1364/OE.388778.
A simple light field imaging system is proposed, which could improve the resolution of light field imaging and enhance the signal-to-noise ratio of the result image. In the experiment, the light field imaging system consists of a single CCD with a microlens array and a semi-transparent mirror. The Fourier slice theorem has been used to transform the four-dimensional (4D) light field information into an infinite number of two-dimensional (2D) slices. With the use of the semi-transparent mirror, the high spatial resolution image can be reconstructed on the terminal sensor. The proposed method can not only reduce the aliasing defocus degree in the imaging process but also improve the slice image resolution to meet the requirement of image definition.
提出了一种简单的光场成像系统，该系统可以提高光场成像的分辨率并增强结果图像的信噪比。在实验中，光场成像系统由一个带有微透镜阵列的单个电荷耦合器件（CCD）和一个半透明镜组成。傅里叶切片定理已被用于将四维（4D）光场信息转换为无限数量的二维（2D）切片。通过使用半透明镜，可以在终端传感器上重建高空间分辨率图像。所提出的方法不仅可以降低成像过程中的混叠散焦程度，还可以提高切片图像分辨率以满足图像清晰度的要求。
