| 单DMD彩色视频显示系统的颜色控制 |
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| 引用本文： | 徐正平,沈宏海,黄厚田,姚园,孙超,许永森.单DMD彩色视频显示系统的颜色控制[J].红外与激光工程,2013,42(7):1848-1852. |
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| 作者姓名： | 徐正平 沈宏海 黄厚田 姚园 孙超 许永森 |
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| 作者单位： | 1.中国科学院航空光学成像与测量重点实验室 中国科学院长春光学精密机械与物理研究所,吉林 长春 130033 |
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| 基金项目： | 国家林业公益性行业科研专项资助(201204515)；中国科学院航空光学成像与测量重点实验室开放基金 |
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| 摘 要： | 对单DMD彩色视频显示系统中的颜色控制方法及其实现进行了深入研究。在简要分析三种DMD投影系统及空间灰度调制法、时间灰度调制法优缺点的基础上，提出了一种单DMD彩色视频显示系统方案，并着重分析了基于脉冲选通灰度调制的颜色控制方法:将帧周期均分为R、G、B时间段，并将各时间段等比例划分为各个位时间段，依据相应颜色分量灰度值控制DMD微镜的状态。由于DMD接收的是视频图像各像素的位平面数据，对图像灰度值到位平面数据的格式转换进行了详细分析。最后，依据DMD工作特点，给出了DMD操作控制时序。整个方案切实可行，可为系统实现提供理论依据。
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| 关 键 词： | 颜色控制 数字微镜器件 彩色视频显示 |
| 收稿时间： | 2012-11-16 |
Color control of video displaying system based on single DMD |
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| Xu Zhengping
,
Shen Honghai
,
Huang Houtian
,
Yao Yuan
,
Sun Chao
,
Xu Yongsen.Color control of video displaying system based on single DMD[J].Infrared and Laser Engineering,2013,42(7):1848-1852. |
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| Authors: | Xu Zhengping Shen Honghai Huang Houtian Yao Yuan Sun Chao Xu Yongsen |
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| Affiliation: | 1.Key Laboratory of Airborne Optical Imaging and Measurement,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Science,Changchun 130033,China |
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| Abstract: | The color controlling method and its realization of single DMD colorized video displaying system were studied in detail. Based on analyzing the advantages and shortcomings of three types of DMD projection system, spatial gray-level modulation and temporal gray-level modulation, one single DMD colorized video displaying system was proposed. The color controlling method based on pulse selection gray-level modulation was analyzed deeply. In this method, the frame-period was evenly divided into R, G, B section, and each of the R, G, B sections was divided proportionally to be some bit-time sections. In every bit-time section, the status of micromirror in DMD was controlled according to the bit value of corresponding pixel gray-level. Considering that the data sent to DMD was the bit-plane data of video pixels, the format conversion from image gray-value to bit-plane data was analyzed in detail. At last, considering the feature of DMD, the operating scheduling was given. The whole scheme is doable. The analysis could provide academic basis for the realization of the system. |
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| Keywords: | color control digital micromirror device colorized video displaying |
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