High-performance integral imaging based light field 3D display

Integral imaging based light field display reproduces vivid 3D images by reconstructing the light ray distributions of 3D scenes and is considered as one of the most promising true 3D display techniques due to its advantages of compact form factor and viewing comfort. However, integral imaging still faces challenges such as complex light field data acquisition and generation, and unsatisfactory display effects. We proposed a high-performance integral imaging 3D display method that included optimal voxel space selection, design of anisotropic backlighting, and error correction. In the display space, the distribution characteristics of voxel space in integral imaging were revealed, and a display scheme based on optimal voxel space was proposed. In terms of hardware structure, a display system with sub-pixel anisotropic backlighting was designed to address voxel aliasing and separation issues. For error correction, a sub-pixel marking technology was proposed to measure the axial position error of lenses with high precision, and a depth-based sub-pixel correction technology was employed to eliminate voxel drift. The proposed method eliminated the problems of voxel separation and aliasing, fully considered the performance of display devices, corrected the axial position errors of lenses, and effectively enhanced the quality of 3D images. These proposed methods make the integral imaging display device have high display performance, and has broad application prospects in many fields such as human-computer interaction, commercial displays, and medical applications.