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DNQX disodium salt Autophagy applied sciencesArticleVBIT-4 Data Sheet holographic 3D Display Making use of Depth Maps Generated by 2D-to-3D Rendering ApproachZehao He, Xiaomeng Sui and Liangcai Cao State Crucial Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China; [email protected] (Z.H.); [email protected] (X.S.) Correspondence: [email protected]: Holographic display has the possible to be utilized in lots of 3D application scenarios because it gives each of the depth cues that human eyes can perceive. Nonetheless, the shortage of 3D content has limited the application of holographic 3D displays. To enrich 3D content material for holographic show, a 2D to 3D rendering strategy is presented. Within this process, 2D pictures are firstly classified into three categories, which includes distant view images, viewpoint view pictures and close-up photos. For every single category, the computer-generated depth map (CGDM) is calculated applying a corresponding gradient model. The resulting CGDMs are applied within a layer-based holographic algorithm to obtain computer-generated holograms (CGHs). The properly reconstructed region of the image adjustments with all the reconstruction distance, providing a all-natural 3D show effect. The realistic 3D effect tends to make the proposed strategy might be applied in several applications, which include education, navigation, and well being sciences in the future. Keyword phrases: 3D display; holographic show; 2D-to-3D; depth mapsCitation: He, Z.; Sui, X.; Cao, L. Holographic 3D Show Employing Depth Maps Generated by 2D-to-3D Rendering Approach. Appl. Sci. 2021, 11, 9889. https://doi.org/10.3390/ app11219889 Academic Editor: Andr M quez Received: 22 September 2021 Accepted: 21 October 2021 Published: 22 October1. Introduction Holography can be a technologies which can create mathematical and physical connections between targets and holographic fringes. Thus, it has been extensively employed inside the fields of 3D imaging and 3D display. In the field of 3D imaging, captured holographic fringes are often employed to reconstruct corresponding targets [1]. Applications of holographic imaging contain sonar [4], radar [5], microscopy [6], et al. Inside the field of 3D show, holographic fringes are usually calculated from targets by algorithms [7]. As the holographic display can present each of the depth cues that human eyes are capable of perceiving, it’s regarded as a promising solution for 3D display [103]. It has the possible to become utilized in several augmented reality (AR) application scenarios, like video education [14,15], spatial cognition and navigation [16], and health sciences [17]. Currently, the shortage of 3D content limits the application of holographic 3D displays. Three-dimensional acquisition devices, including light-field cameras [18] and time-of-flight (TOF) cameras [19], are regarded because the resolution to make 3D content. For light-field cameras, the excellent of image reduces with all the shooting distance [20]. The additional processes that are required to address this issue [21] boost technique complexity. For many TOF cameras, the resolution is insufficient, leading to decrease quality displays with limited definition. Also, the production of 3D content by 3D acquisition devices is costly and hardware intensive. Moreover, current 2D content can’t be completely utilized in 3D acquisition devices. 2D-to-3D rendering offers an alternative selection to enrich 3D content. A variety of features, which includes edge [22,23].
