| 减少液晶显示全息图的再现误差 |
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| 引用本文： | 陈晓西,刘旭,张晓洁.减少液晶显示全息图的再现误差[J].仪器仪表学报,2004,25(Z2):137-140. |
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| 作者姓名： | 陈晓西 刘旭 张晓洁 |
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| 作者单位： | Chen Xiaoxi（State Key Laboratory of Modern Optical Instrumentation,
Zhejiang University, Hangzhou 310027, China）
Liu Xu（State Key Laboratory of Modern Optical Instrumentation,
Zhejiang University, Hangzhou 310027, China）
Zhang Xiaojie（State Key Laboratory of Modern Optical Instrumentation,
Zhejiang University, Hangzhou 310027, China） |
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| 摘 要： | 提出计算机生成全息图的新的算法.全息条纹数据以计算机图像格式存储,并以视频信号传输到液晶板上显示,用该电全息实时三维成像.液晶板的分辨率、对比度及由全息图的灰度决定的调制度会对再现造成影响.因此在算法中考虑这些因素,并通过确定像面分布的情况下逆推求出全息面上的光波的振幅和位相分布再优化编码来减少再现误差.最后给出了实验结果,并对再现进行像质评价.
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| 关 键 词： | 计算机制全息图 液晶板 再现误差 |
Reduction on the Reconstruction Error of Computer-generated Holography in Liquid Crystal Panels |
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| CHEN Xiaoxi,Liu Xu,Zhang Xiaojie.Reduction on the Reconstruction Error of Computer-generated Holography in Liquid Crystal Panels[J].Chinese Journal of Scientific Instrument,2004,25(Z2):137-140. |
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| Authors: | CHEN Xiaoxi Liu Xu Zhang Xiaojie |
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| Abstract: | A new algorithm for calculating computer-generated holograms (CGH's) is proposed. The hologram fringe pattern data is stored in the computer image format, and transmitted to a transmission-type liquid crystal panel by the video signal. It will be used for the real-time three-dimension imaging by holographic reconstruction. Questions of the effect of the solution, the contrast ratio of the liquid crystal panel and the modulation due to the gray-level of the hologram image are addressed. Therefore the distribution of the amplitude and phase on the holographic plane is determinated by confirming image plane distribution considering the above effects. The reconstructed data is made as similar as possible to the source data by the optimal code. Experimental results,and value the quality of the reconstructed image are given. |
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| Keywords: | Computer-generated holography Liquid crystal panel Reconstruction error |
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