摘要
GMS双光谱云图云分类微机处理系统(简称云分类系统)除可完成云图资料的量化采集、存贮、显示、局部放大等常规功能外,主要可进行单光谱图象和双光谱图象的多种处理。对单光谱图象,可作一维直方图分析,并实现任意值域内的对比度扩展和象素频数统计;对双光谱图象,利用双变量象素分布图和二维直方图,采用框式分类法和空间相干法实现云分类。输出云分类、降水云分类的分布图象和各类云、各类降水云的象素总数及云量比例。
A microcomputer processing system for cloud classification using GMS bis-pectral images (the cloud classification system for short)is designed. In addition to theroutine functions, such as image quantization, sampling, storage, display and local am-plification, it can process monospectral or bispectral satellite images. For monospectralsatellite images, it can be used for 1-dimensional histogram analysis and the contraststretching and pixel frequency statistics in the arbitrary value domain, and for bispectralsatellite images, rectangle classification and spatial coherence are adopted for cloud clas-sification on the 2-dimensional histogram. Thus, the cloud classification system candisplay the cloud images and perform the precipitus classification as well as the pixelnumber and cloudiness percentage of various clouds and precipitus clouds.
出处
《南京气象学院学报》
CSCD
1992年第1期96-102,共7页
Journal of Nanjing Institute of Meteorology
关键词
双光谱云图
云
分类
微机
处理系统
bispectral satellite image
rectangle classification
spatial coherence
cloud classification
precipitus classification
