High-frame frequency imaging system of large area CMOS image sensor

Yong-hui NING; Hui LIU; Qing-lei ZHAO; Han-zhou GUO

doi:10.3788/OPE.20192705.1167

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High-frame frequency imaging system of large area CMOS image sensor

Information Sciences | 更新时间：2020-08-13

- High-frame frequency imaging system of large area CMOS image sensor
- Optics and Precision Engineering Vol. 27, Issue 5, Pages: 1167-1177(2019)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所，吉林长春 130033
  2.长春国科医工科技发展有限公司，吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192705.1167
  CLC： V447.3;TP751.1
- Received：27 September 2018，
  
  Accepted：27 November 2018，
  
  Published：15 May 2019
- 稿件说明：
移动端阅览
Yong-hui NING, Hui LIU, Qing-lei ZHAO, et al. High-frame frequency imaging system of large area CMOS image sensor[J]. Optics and precision engineering, 2019, 27(5): 1167-1177.
DOI：

Yong-hui NING, Hui LIU, Qing-lei ZHAO, et al. High-frame frequency imaging system of large area CMOS image sensor[J]. Optics and precision engineering, 2019, 27(5): 1167-1177. DOI： 10.3788/OPE.20192705.1167.

摘要

为了满足大面阵高帧频CMOS探测器成像系统的设计要求，设计了基于GMAX0504探测器的CMOS成像系统，实现高帧频、大视场的成像需求；采用DDR3-SDRAM和NAND-FLASH，解决了图像数据存储速率与容量的瓶颈问题；通过图像处理的方法，提高了图像动态范围、信噪比(SNR)与调制传递函数(MTF)的设计指标；通过图像实时像元校正，提高了成像系统的光响应非均匀性(PRNU)指标。实验结果表明，图像信噪比(SNR)平均值为44 dB，接近探测器的最大信噪比(SNR)；光响应非均匀性(PRNU)均值为1.4%，满足成像需求。该CMOS成像系统设计结构可应用于更大面阵CMOS成像系统，为工程应用提供了保障。

Abstract

For the demand of large area CMOS image sensor system with high frame frequency

designed the imaging system based on the GMAX0504 CMOS image sensor. It satisfied the demand of a large area sensor and high frame frequency imaging system; solved the problems of transmission speed and storage volume by the use of DDR3-SDRAM and NAND-FLASH; enhanced the image dynamic range(DR)

SNR

MTF through real-time imaging processing; improved the image PRNU by pixel correction algorithm. The specifications of the experiments in the lab verified that the image SNR could be at 44 dB on average

almost the maximum SNR of the CMOS sensor; the image PRNU could be at 1.4% on average

up to the sensor PRNU specification. The new system and hardware structure could be used in a larger and faster area CMOS imaging system

and get better imaging specifications. It is a valid and solved scheme for further system design.

关键词

Keywords

references

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