Modeling and simulation of subpixel imaging for area charge coupled device

	Modeling and simulation of subpixel imaging for area charge coupled device
	Li, Y.; B. He and W. Wang
	2015
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
卷号	44 期号:9 页码:2767-2773
摘要	In order to quantitatively investigate image quality improvement of area CCD subpixel imaging and influence of fill factor on image quality, a mathematical model was established to simulate subpixel imaging of array CCD with different fill factors. Without consideration of noise influence, simulation experiment for a sub-image of ISO12233 standard resolution card was performed on Matlab. Experiment results illustrate that, when fill factor is 100%, compared with common imaging mode of array CCD, gray mean gradient (GMG) of diagonal subpixel and four-point subpixel imaging mode was increased by 2.9970, 3.4136 respectively, and energy of Laplacian (EOL) is enhanced by 0.5676, 0.7478 respectively. With the same fill factor other than 100%, GMGs and EOLs of common imaging mode, diagonal subpixel imaging mode, and four-point subpixel mode are increasing in that order too. For four-point subpixel imaging mode, GMG of 69%, 44%, 25% fill factor is improved by 1.4330, 3.3373, 5.1532 respectively compared with that of 100% fill factor, and EOL increased by 0.6380, 1.7044, 3.1968 respectively. With the same imaging mode other than four-point subpixel, GMGs and EOLs of images obtained with CCDs whose fill factor is 100%, 69%, 44%, 25% increase too. Research shows that subpixel technique of array CCD can improve image quality, and four-point subpixel imaging mode provides more improvement on image quality than diagonal subpixel imaging mode. In the condition of signal-to-noise ratio is met, the image quality performance becomes better when fill factor decrease for the same CCD imaging mode. , 2015, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56276
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, Y.,B. He and W. Wang. Modeling and simulation of subpixel imaging for area charge coupled device[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2015,44(9):2767-2773.
APA	Li, Y.,&B. He and W. Wang.(2015).Modeling and simulation of subpixel imaging for area charge coupled device.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,44(9),2767-2773.
MLA	Li, Y.,et al."Modeling and simulation of subpixel imaging for area charge coupled device".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 44.9(2015):2767-2773.

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