Smear correction of asynchronous binning high frame rate CCD camera

Lu LIU; Tong-ding LUO; Bin-kang LI; Shao-hua YANG; Ming YAN

doi:10.3788/OPE.20172501.0217

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Smear correction of asynchronous binning high frame rate CCD camera

Information Sciences | 更新时间：2020-07-07

- Smear correction of asynchronous binning high frame rate CCD camera
- Optics and Precision Engineering Vol. 25, Issue 1, Pages: 217-223(2017)
- 作者机构：
  
  西北核技术研究所, 陕西西安 710024
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172501.0217
  CLC： TN29
- Received：15 June 2016，
  
  Accepted：10 August 2016，
  
  Published：25 January 2017
- 稿件说明：
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Lu LIU, Tong-ding LUO, Bin-kang LI, et al. Smear correction of asynchronous binning high frame rate CCD camera[J]. Optics and precision engineering, 2017, 25(1): 217-223.
DOI：

Lu LIU, Tong-ding LUO, Bin-kang LI, et al. Smear correction of asynchronous binning high frame rate CCD camera[J]. Optics and precision engineering, 2017, 25(1): 217-223. DOI： 10.3788/OPE.20172501.0217.

摘要

一种基于异步时序驱动和Binning技术的高帧频成像技术在帧转移CCD相机上得到成功应用。为了抑制该CCD相机成像时产生的拖尾效应，基于该相机的高帧频连续成像原理，理论上分析了图像获取过程中拖尾产生的原因，给出了一套完整的消除拖尾的数值解析算法。该算法充分考虑了图像亮度变化对拖尾形成产生的影响，并对此进行了修正，已在异步Binning CCD相机上进行了实验验证。利用相机以40 000帧每秒的帧频获取4幅连续图像进行实验，实验结果表明，该算法可有效去除每幅图像的拖尾噪声，而且消除拖尾噪声后的图像区域的灰度方差得到明显降低，异步Binning CCD相机的成像质量得以提高。上述结果表明算法适用于高帧频相机的连续成像。

Abstract

A high frame rate imaging technology based on asynchronous timing drive and Binning technology has been applied on frame transfer CCD camera successfully. The reason why smear noise occurs in image acquisition process has been analyzed theoretically and a complete set of numerical analytic algorithm for smear correction has been carried out to restraint the smear generated in the imaging of this CCD camera

according to its continuous imaging principle. The algorithm has fully taken the effects of consecutive frame exposures and changing intensity on smear into account and then amended them. Experimental verification has been conducted in asynchronous Binning camera. Results indicate that the camera can get 4 continuous images at a frame rate of 40 000 frames per second. The algorithm has effectively eliminated the smear noise of all images

making contribution to the remarkable decrease of the gradation variance in smear area and the improvement of asynchronous Binning CCD camera's imaging quality. The smear correction algorithm is applicable to continuous imaging of high frame rate camera.

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Keywords

references

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