Liu Zesheng, Li Dahai, Deng Huan
College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China.
Micromachines (Basel). 2023 Jan 15;14(1):225. doi: 10.3390/mi14010225.
There exists a defect of the narrow viewing angle in the conventional integral imaging system. One reason for this is that only partial pixels of each elemental image contribute to the viewing angle and the others cause image flips. In this paper, a wide-viewing-angle integral imaging system with a full-effective-pixels elemental image array (FEP-EIA) was proposed. The correspondence between viewpoints and pixel coordinates within the elemental image array was built up, and effective pixel blocks and pixels leading to flipping images were deduced. Then, a pixel replacement method was proposed to generate the FEP-EIAs, which adapt to different viewing distances. As a result, the viewing angle of the proposed integral imaging system was effectively extended through the replacement of the pixels, which caused the image flips. Experiment results demonstrated that wide viewing angles are available for the proposed integral imaging system regardless of the viewing distances.
传统积分成像系统存在视角狭窄的缺陷。造成这种情况的一个原因是每个基元图像中只有部分像素对视角有贡献，而其他像素会导致图像翻转。本文提出了一种具有全有效像素基元图像阵列（FEP-EIA）的宽视角积分成像系统。建立了基元图像阵列内视点与像素坐标之间的对应关系，推导了有效像素块和导致图像翻转的像素。然后，提出了一种像素替换方法来生成适用于不同观察距离的FEP-EIA。结果，通过替换导致图像翻转的像素，有效扩展了所提出的积分成像系统的视角。实验结果表明，无论观察距离如何，所提出的积分成像系统都能获得宽视角。
