The image quality of super multi-view 3D display is affected by the chromatic aberration. Currently, the simulation methods for super multi-view 3D display are based on the theory of geometric optics to trace rays and obtain the numerical simulation results. However, the phenomenon of light dispersion is neglected in geometric optics, which approximates the cylindrical lens as a series of pinhole structures, resulting in inaccurate and biased simulation results. In this paper, we propose a numerical simulation method based on the diffraction theory of wave optics for super multi-view 3D display. The cause of chromatic aberration is analyzed. Moreover, the reverse simulation is performed to calculate the ideal viewpoint composite image without chromatic aberration. The numerical simulation is conducted to verify the feasibility of the proposed method. It is proved that the proposed method simulates the physical propagation process of super multi-view 3D display and improves the reconstructed image quality. In the future, it can be used to achieve the super multi-view 3D light field technology with low crosstalk and large field. This work may pave a new avenue for light filed 3D display, which could lead to applications in virtual reality devices and next-generation display devices such as 3D televisions, telepresence system and 3D display desktop computers.
Integral imaging is a promising naked-eye three-dimensional (3D) display technology. However, the intrinsic tradeoff between the wide viewing angle and high resolution refrains its further application. In order to enlarge the viewing angle of integral imaging without sacrificing the resolution, we propose a method that employs two overlapped display panels. An additional display panel has been introduced into the conventional integral imaging. The display area of the additional display panel can be divided into transparent region and information-loaded region. The transparent region is loaded with blank information, allowing light to pass through without modulation. The information-loaded region is opaque, which contains element image array (EIA) and blocks crosstalk, then to establish an additional viewing angle. The combination of these two viewing angles forms an enlarged viewing angle. The experimental results reveal the successful establishment of the additional viewing angle, effectively enlarging the horizontal viewing angle of integral imaging from 8° to 16°. The two-layer display method provides the 3D display system with a higher space-bandwidth product, overcoming the constraints between viewing angle and display resolution.
A parameter optimization method is proposed to enhance the performance of integral imaging (InI) and super multi-view (SMV) in light field three-dimensional (3D) display. The parameters of the light field display are categorized as system parameters and display parameters. By employing a multi-objective genetic algorithm, we optimize the system parameters to achieve the desired values for the display parameters. This approach takes into account the comprehensive impact of all display parameters on the imaging quality of light field 3D display. By setting different combinations of the weights in the genetic algorithm, the resolution, DOF and FOV is improved, respectively.
Holographic display based on the Computer-Generated Holograms (CGH) has been suffered from two problems. The first problem is the heavy computational complexity involved in the generation of CGH, which has limited real-time holographic display. The second problem is that the image quality of holographic display is limited. To solve the two problems, a Block-based Sub-Hologram (BSH) method is proposed, which has the ability to generate high quality holograms in real-time. In the BSH method, the target 3D scene is divided into a series of blocks. A block is composed of adjacent object points. We use a diffraction-based approximation method to determine the region of the Sub-Hologram (SH) corresponding to each block. Since the size and the complexity of the SH are reduced, the computation time is decreased significantly. It is confirmed that the proposed method implemented on the GPU framework can achieve real-time color three-dimensional holographic display with large size.
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