AgCam传感器平场校正  

Flat Field Correction for AgCam

作　　者：窦长勇[1,2] 张晓东 Doug Olsen 贺明霞[1] 

机构地区：[1]中国海洋大学海洋遥感教育部重点试验室,山东青岛266003 [2]中国科学院对地观测与数字地球科学中心,北京100012 [3]University of North Dakota,the Northern Great Plains Center for People and the Environment Grand Forks,ND USA 58202-9011

出　　处：《中国海洋大学学报（自然科学版）》2010年第9期137-141,共5页Periodical of Ocean University of China

基　　金：University of North Dakota承担的美国航空航天局项目(NASA NNX06AE16G)资助

摘　　要：平场校正对获得高质量的遥感图像起着非常关键的作用。针对利用商业相机开发的传感器需要进行平场校正的问题,提出对Agriculture Camera(AgCam)传感器的平场校正方法。应用AgCam的定标实验数据分别得到传感器CCD阵列的暗电流(Dark Current),渐晕效应(Vegnitting Effect)和光电响应(Quantum Efficiency)的校正系数。AgCam的定标实验数据和实际拍摄图像处理结果表明,该方法能够有效地对AgCam的平场效应进行校正。Flat field correction plays a key role in obtaining high quality remote sensing image data. Due to the problem that flat field correction is needed by the sensor built by commercial products, the correction method for images acquired by Agriculture Camera （AgCam） is proposed in this paper. The coefficients for dark current, non-uniform vegnitting effect and quantum efficiency effect of the CCD array are extracted from the calibration data. The corrected results of AgCam calibration and test images suggest that this proposed method can remove flat field effect effectively.

关 键 词：平场校正 光电响应 渐晕效应 最小二乘拟合 国际空间站 

分 类 号：TN216[电子电信—物理电子学]