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	多角度偏振成像仪偏振通道响应非一致性测量方法期刊论文 OAI收割光学学报, 2020, 卷号: 40 作者: 翁建文; 袁银麟; 郑小兵; 康晴; 涂碧海 \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2020/10/26 remote sensing polarization channel wide field-of-view response non-uniformity sectional field-ofview measurement uncertainty 遥感偏振通道宽视场响应非一致性分视场测量不确定度
	Research on radiometric calibration of interline transfer CCD camera based on TDI working mode (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Liu J.-G.; Wu X.-X. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 Interline transfer CCD camera can be designed to work in time delay and integration mode similar to TDI CCD to obtain higher responsivity and spatial resolution under poor illumination condition. However it was found that outputs of some pixels were much lower than others' as interline transfer CCD camera work in TDI mode in laboratory radiometric calibration experiments. As a result photo response non-uniformity(PRNU) and signal noise ratio(SNR) of the system turned for the worse. This phenomenon's mechanism was analyzed and improved PRNU and SNR algorithms of interline transfer CCD camera were advanced to solve this problem. In this way TDI stage was used as a variant in PRNU and SNR algorithms and system performance was improved observably with few influences on use. In validation experiments the improved algorithms was applied in radiometric calibration of a camera with KAI-0340s as detector. Results of validation experiments proved that the improved algorithms could effectively improve SNR and lower PRNU of the system. At the same time characteristic of the system could be reflected better. As working in 16 TDI stages PRUN was reduced from 2.25% to 0.82% and SNR was improved about 2%. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Application of image smoothing algorithm (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Congress on Image and Signal Processing, CISP 2010, October 16, 2010 - October 18, 2010, Yantai, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 With the application of CCD image sensor the display effect of LED display panel is greatly improved. Due to the pixel response non-uniformity of CCD it usually brings a "center dark surround light" defect on LED display panel. Based on image smoothing algorithm a calibration method for this defect is proposed in this paper. After calibration the display uniformity deviation of LED display panel can be narrowed from 12.9% to 0.73%. Experimental results show that the method overcomes the inherent defect and achieves the desired effect. 2010 IEEE.