针对集成成像技术视角窄的问题,提出了一种在集成成像计算重构中增大视角的方法。根据集成成像原理,利用相邻元素图像之间的相似性,对相邻元素图像单元进行配准、拼接,扩大每个微透镜对应的元素图像区域,以减少重构时所提取像素超过元素图像区域的情况发生,从而扩大了计算重构完整3D图像的视角。相比传统方法,本文方法在观看方向偏离光轴较大,超过传统视角一定范围时,元素图像也可以通过对应的微透镜进行正确合成,但由于计算重构时增加了相邻元素图像的配准、拼接过程,因此计算时间有所增加。

We propose a method for increasing the viewing angle during the computational reconstruction of integral imaging to solve the problem of narrow viewing angle during integral imaging. Initially, the adjacent elemental image units are aligned and stitched for enlarging the elemental image region corresponding to each microlens based on the integral imaging principle and similarity of the adjacent elemental images. When compared with the traditional method, the proposed method can accurately integrate elemental images by using the corresponding microlens when the viewing direction considerably deviates from the optical axis and exceeds a certain range of traditional perspective. However, because of the addition of image registration and stitching of adjacent elemental images during computational reconstruction, the calculation time increases.