Calibration method of microgrid polarimeters with image interpolation

被引：56

作者：

Chen, Zhenyue ^{[1
,2
]}

Wang, Xia ^{[1
]}

Liang, Rongguang ^{[2
]}

机构：

[1] Beijing Inst Technol, Minist Educ China, Key Lab Photoelect Imaging Technol & Syst, Sch Optoelect, Beijing 100081, Peoples R China

[2] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA

来源：

APPLIED OPTICS | 2015年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

FOCAL-PLANE POLARIMETERS; DIVISION; LIGHT;

D O I：

10.1364/AO.54.000995

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Microgrid polarimeters have large advantages over conventional polarimeters because of the snapshot nature and because they have no moving parts. However, they also suffer from several error sources, such as fixed pattern noise (FPN), photon response nonuniformity (PRNU), pixel cross talk, and instantaneous field-of-view (IFOV) error. A characterization method is proposed to improve the measurement accuracy in visible waveband. We first calibrate the camera with uniform illumination so that the response of the sensor is uniform over the entire field of view without IFOV error. Then a spline interpolation method is implemented to minimize IFOV error. Experimental results show the proposed method can effectively minimize the FPN and PRNU. (C) 2015 Optical Society of America

引用

页码：995 / 1001

页数：7

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