“航天清华一号”微小卫星及其图像处理

尤政; 戴汩

doi:10.11834/jrs.20010304

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专辑

“航天清华一号”微小卫星及其图像处理
“Hangtian Tsinghua-1” Micro-Satellite and Its Image Processing
2001年第3期页码：177-182
纸质出版：2001
DOI： 10.11834/jrs.20010304
稿件说明：

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[1]尤政,戴汩.“航天清华一号”微小卫星及其图像处理[J].遥感学报,2001(03):177-182+242. DOI： 10.11834/jrs.20010304.

YOU Zheng, DAI Mi. “Hangtian Tsinghua-1” Micro-Satellite and Its Image Processing[J]. Journal of Remote Sensing, 2001, (3): 177-182. DOI： 10.11834/jrs.20010304.

摘要

介绍了“航天清华一号”微小卫星的研究背景和主要技术指标。讨论了星上图像智能处理的方案

包括云检测和图像压缩两个部分

并介绍了地面的图像处理工作

Abstract

In this paper

we introduce the research background and key technical parameters of “Hangtian Tsinghua

” micro

atellite. The scheme of on

oard image intelligent processing

which includes cloud detection and image compression

is discussed in detail. Cloud detection is based on the cloud’s brightness character and we use gray threshold method to achieve image segmentation through the analysis of image histogram. Image compression method is a mend of Block Truncation Coding method that implements three

evel compression according to the activity of the image block. All on

oard image processing tasks are fulfilled by the Transputer processor. The image processing work on the ground mainly including noise removal and image correction is discussed in the end.