摘要：

提出一种基于图像质量评价的空间面阵CCD相机成像最佳曝光时间的自动计算方法。在对静止卫星CCD成像链路仿真的基础 上，利用改进的图像曝光估计算法确定出指定拍摄地点和拍摄时间的空间面阵CCD相机曝光的正常范围，通过筛选的图像质量评价指标计算出相应的曝光时间。实验结果表明，该方法所得曝光时间对应的图像质量是最佳的。

关键词: 静止卫星, 空间面阵CCD, 仿真, 图像曝光估计, 图像质量评价, 最佳曝光时间

Abstract:

This paper proposes an automatic method to compute the exposure time for space array Charge Coupled Device(CCD) based on image quality. An imaging simulation for geostationary satellite array CCD camera is designed. The range of normal exposure time is calculated according to the modified exposure estimation method. The exact exposure time can be automatically obtained based on selected image quality evaluation indexes for any given location and time. Experimental results confirm that the proposed algorithm is effective and leads to improvement in photography to obtain high quality remote sensing images.

Key words: geostationary satellite, space array Charge Coupled Device(CCD), simulation, image exposure estimation, image quality evaluation, optimal exposure time

中图分类号: 

• TP391.41