Study on automatic gain control algorithm of SBUV-ICCD

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Study on automatic gain control algorithm of SBUV-ICCD

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- Study on automatic gain control algorithm of SBUV-ICCD
- Optics and Precision Engineering Vol. 18, Issue 2, Pages: 496-502(2010)
- 作者机构：
  
  长春光学精密机械与物理研究所2. 中国科学院长春光学精密机械与物理研究所3. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：18 July 2009，
  
  Revised：13 November 2009，
  
  Published Online：20 February 2010，
  
  Published：20 February 2010
- 稿件说明：
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章明朝,周跃,隋永新,杨怀江. “日盲”紫外增强型CCD的自动增益控制[J]. 光学精密工程, 2010,18(2):496-502

Study on automatic gain control algorithm of SBUV-ICCD[J]. Optics and precision engineering, 2010, 18(2): 496-502.
章明朝,周跃,隋永新,杨怀江. “日盲”紫外增强型CCD的自动增益控制[J]. 光学精密工程, 2010,18(2):496-502 DOI：

Study on automatic gain control algorithm of SBUV-ICCD[J]. Optics and precision engineering, 2010, 18(2): 496-502. DOI：

摘要

为使SBUV-ICCD（“日盲”紫外增强型电荷耦合器件）适用于不同辐亮度目标的探测，并避免由于长时间高亮度照射引起的器件损害，提出了适用于SBUV-ICCD的AGC（自动增益控制）算法。应用连续N帧图像直方图的和作为分析对象，将其分为背景段、目标段、明亮段及饱和段，使用明亮段与目标段的比例系数及饱和段与明亮段的比例系数为控制参量，完成了AGC算法，最后设计实验对其进行了验证。结果表明该算法能够在目标辐亮度突然剧烈增强或迅速减弱的情况下快速有效地调节增益，使图像具有较好的分辨率。

Abstract

In order to make SBUV-ICCD (Solar Blind Ultraviolet Enhanced CCD) detect variable radiation luminance's target

and avoid damage the device when it expose for high intensity radiation

a AGC (automatic gain control) algorithm has been proposed for SBUV-ICCD. The sum of N consecutive frames image's histogram has been treated as analysis object

divide it to four background section

target's section

brightness section and saturated section. The AGC algorithm has been accomplished using the proportion factor between brightness section and target's section as controlling parameters

also the coefficient between saturated section and brightness section. At last experiments has designed for test the performance of algorithm. Experimental results indicate that when the target's luminance boost up unexpected or fade rapidly

this algorithm can adjust the gain of ICCD quickly and effectively

make the image has satisfied resolution.

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Related Author

周跃

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Related Institution

中国科学院长春光学精密机械与物理研究所2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室

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