期刊
APPLIED SCIENCES-BASEL
卷 11, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/app11219889
关键词
3D display; holographic display; 2D-to-3D; depth maps
类别
资金
- National Natural Science Foundation of China (NSFC) [61775117]
- China Postdoctoral Science Foundation [BX2021140]
Holographic display offers natural 3D display effect, but the scarcity of 3D content limits its application. To address this issue, a 2D to 3D rendering approach is proposed to enrich the content of holographic display.
Holographic display has the potential to be utilized in many 3D application scenarios because it provides all the depth cues that human eyes can perceive. However, the shortage of 3D content has limited the application of holographic 3D displays. To enrich 3D content for holographic display, a 2D to 3D rendering approach is presented. In this method, 2D images are firstly classified into three categories, including distant view images, perspective view images and close-up images. For each category, the computer-generated depth map (CGDM) is calculated using a corresponding gradient model. The resulting CGDMs are applied in a layer-based holographic algorithm to obtain computer-generated holograms (CGHs). The correctly reconstructed region of the image changes with the reconstruction distance, providing a natural 3D display effect. The realistic 3D effect makes the proposed approach can be applied in many applications, such as education, navigation, and health sciences in the future.
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