two-dimensional spectral classification

In view of this, the development of imaging spectral technique is summarized and for the first time the classification methods are divided into two kinds: pure pixel and mixed pixel, according to the constitutions of a pixel.

文章概述了国内外在成像光谱技术方面的发展，并首次以像元的构成成分为依据，从纯像元和混合像元的角度对分类方法进行了论述。

Using Landsat and CBERS images as two data sources, each pixel was dealt as a mixture of vegetation, high-and low-albedo and bare soil, impervious surface was extracted with linear spectral mixture model, landuse information was determined with supervised classification method.

采用Landsat、中巴资源卫星两种遥感影像数据，每个像元均可视为由高反照度地物、低反照度地物、植被和裸土组成，运用线性光谱混合模型提取不透水面信息。

It is based not only on the mass spectral rules, but on a new type mass spectral knowledge base frame of two level group classification with Zi/ ZT value.

程序不仅基于质谱规则，而且基于依Z i/Z r值二级族分类构成的新型质谱知识库框架。