| CCD摄像机图像处理仿真 |
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| 引用本文： | 刘雨丹,张炯,戴树岭.CCD摄像机图像处理仿真[J].北京航空航天大学学报,2009,35(12):1455-1458. |
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| 作者姓名： | 刘雨丹 张炯 戴树岭 |
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| 作者单位： | 北京航空航天大学自动化科学与电气工程学院,北京,100191;北京航空航天大学自动化科学与电气工程学院,北京,100191;北京航空航天大学自动化科学与电气工程学院,北京,100191 |
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| 摘 要： | 针对CCD(Charge Coupled Device)摄像机的图像处理过程,提出一种基于可编程GPU(Graphic Processing Unit)的摄像机仿真方法,利用GPU的流处理模式和并行计算能力,对图像的每个像素进行Gamma校正、亮度调节、对比度调节、色温偏差调节,以及色彩饱和处理.分析了Gamma校正的原理以及在其他调节之前进行Gamma校正的必要性.讨论了图像亮度与像素颜色的关系,提出针对当前时刻的拍摄图像提取亮度信号的方法,规定了亮度等级的划分,并将亮度等级作为图像处理的依据.提出了在低照度情况下模拟动态噪点的方法.结果表明:该方法可以模拟真实CCD摄像机在复杂光照环境下的拍摄效果,并保证实时仿真的高速与高效性.
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| 关 键 词： | 电荷耦合器件摄像机 可编程图形处理器 Gamma校正 亮度 |
| 收稿时间： | 2008-11-25 |
CCD vidicon image processing simulation |
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| Liu Yudan,Zhang Jiong,Dai Shuling.CCD vidicon image processing simulation[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(12):1455-1458. |
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| Authors: | Liu Yudan Zhang Jiong Dai Shuling |
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| Institution: | School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | A simulation method based on programmable graphic processing unit(GPU) was proposed to simulate charge coupled device(CCD) vidicon image processing.The flow-operating mode and parallel computation ability of GPU were utilized to process each pixel,including Gamma correction,brightness and contrast adjustment,color-temperature adjustment,and color-saturation processing.The principle of Gamma correction and the necessity to implement it before other operations were analyzed.The relation between luminance and ... |
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| Keywords: | charge coupled device vidicon programmable graphic processing unit Gamma correction luma |
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