Computer-generated holographic near-eye display system based on LCoS phase only modulator
| Autor: | Siqi Liu, Chang Wang, Huaye Li, Zhenrong Zheng, Peng Sun, Xiao Tao, Shengqian Chang, Siman Zhang, Ting Xie |
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| Rok vydání: | 2017 |
| Předmět: |
Image quality
Computer science business.industry 3D reconstruction ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Holography Field of view 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention 010309 optics Liquid crystal on silicon Optics Experimental system law 0103 physical sciences Augmented reality 0210 nano-technology business Fresnel diffraction |
| Zdroj: | Applications of Digital Image Processing XL. |
| Popis: | Augmented reality (AR) technology has been applied in various areas, such as large-scale manufacturing, national defense, healthcare, movie and mass media and so on. An important way to realize AR display is using computer-generated hologram (CGH), which is accompanied by low image quality and heavy computing defects. Meanwhile, the diffraction of Liquid Crystal on Silicon (LCoS) has a negative effect on image quality. In this paper, a modified algorithm based on traditional Gerchberg-Saxton (GS) algorithm was proposed to improve the image quality, and new method to establish experimental system was used to broaden field of view (FOV). In the experiment, undesired zero-order diffracted light was eliminated and high definition 2D image was acquired with FOV broadened to 36.1 degree. We have also done some pilot research in 3D reconstruction with tomography algorithm based on Fresnel diffraction. With the same experimental system, experimental results demonstrate the feasibility of 3D reconstruction. These modifications are effective and efficient, and may provide a better solution in AR realization. |
| Databáze: | OpenAIRE |
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