Li Qiang, Deng Huan, Yang Cuini, He Wei, Zhong Feiyan
Opt Express. 2022 Jun 20;30(13):22838-22847. doi: 10.1364/OE.455320.
In this paper, a locally controllable two-dimensional (2D)/ three-dimensional (3D) mixed display system and corresponding image generation method are proposed. The proposed system is mainly composed of a collimating backlight module (CBM) and a light control module (LCM). The CBM provides collimating polarized light. The LCM modulates a part of the collimating polarized light to form point light sources for 3D display and the other part to form scattered light sources for 2D display. The 2D and 3D display states can be locally controlled by using a pixelated mask loaded on a polarization switching layer. In addition, a corresponding image generation method is proposed. According to observer's demand, the parallax image is divided into target image area and residual image area by using deep learning matting algorithm, and a 2D/3D mixed light field image with full parallax 3D target image and high-resolution 2D residual image is generated. We developed a prototype based on the proposed locally controllable 2D/3D mixed display structure and generated two sets of 2D/3D mixed light field image with different target objects and residual objects from the same parallax images. The experimental results demonstrated the effectiveness of our proposed system and the corresponding image generation method. High-resolution 2D image and full parallax 3D image were displayed and locally switched in the experimental system.
本文提出了一种局部可控的二维（2D）/三维（3D）混合显示系统及相应的图像生成方法。所提出的系统主要由准直背光模块（CBM）和光控模块（LCM）组成。CBM提供准直偏振光。LCM调制一部分准直偏振光以形成用于3D显示的点光源，另一部分形成用于2D显示的散射光源。通过使用加载在偏振切换层上的像素化掩膜，可以局部控制2D和3D显示状态。此外，还提出了一种相应的图像生成方法。根据观察者的需求，利用深度学习抠图算法将视差图像分为目标图像区域和残差图像区域，生成具有全视差3D目标图像和高分辨率2D残差图像的2D/3D混合光场图像。我们基于所提出的局部可控2D/3D混合显示结构开发了一个原型，并从相同的视差图像生成了两组具有不同目标物体和残差物体的2D/3D混合光场图像。实验结果证明了我们所提出的系统和相应图像生成方法的有效性。在实验系统中实现了高分辨率2D图像和全视差3D图像的显示及局部切换。
