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。

In this paper，we introduce the research background and key technical parameters of“Hangtian Tsinghua-1” micro-satellite. The scheme of on-board 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-level compression according to the activity of the image block. All on-board 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.