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Proceedings Paper

The Implementation of non-uniformity correction in multi-TDICCD imaging system
Author(s): Guofang Zhai; Yun Cheng; Zhixue Han; Dong Wang
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Paper Abstract

Abstract—a non-uniformity correction algorithm is proposed and implemented on a Field-Programmable Gate Array (FPGA) hardware platform to solve a problem of pixel response non-uniformity(PRNU) for multiple Time Delay and Integration Charge Couple Device(TDICCD) camera. The non-uniformity is introduced and a synthetical correction algorithm is presented, in which the two-point correction method is applied to a single channel, gain averaging correction method among multi-channel and scene-adaptive correction method among multiple-TDICCD. Then, the correction algorithm is generated. Finally, the FPGA ability for fix-point processing is analyzed; the correction algorithm is optimized, and implemented on FPGA. Testing results indicate that the non-uniformity can be decreased from 8.27% to 0.51% for three TDICCDs camera's images with this proposed correction algorithm, proving that this correction algorithm is with high real-time performance, great engineering realization and satisfaction for the system requirements.

Paper Details

Date Published: 8 October 2015
PDF: 5 pages
Proc. SPIE 9675, AOPC 2015: Image Processing and Analysis, 96750A (8 October 2015); doi: 10.1117/12.2197030
Show Author Affiliations
Guofang Zhai, Beijing Institute of Space Mechanics and Electricity (China)
Yun Cheng, Beijing Institute of Space Mechanics and Electricity (China)
Zhixue Han, Beijing Institute of Space Mechanics and Electricity (China)
Dong Wang, Beijing Institute of Space Mechanics and Electricity (China)

Published in SPIE Proceedings Vol. 9675:
AOPC 2015: Image Processing and Analysis
Chunhua Shen; Weiping Yang; Honghai Liu, Editor(s)

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