【摘要】 遥感应用中经常涉及到面积统计 ,提出了两个自动计算分类图像斑块面积的方法 ,逐行扫描法和点生长法。这两种算法由计算机图形学中的图形填充方法——扫描转换及种子填充方法发展而来 ,详细分析了两个算法过程 ,对两个算法的优劣进行了比较 ,得出点生长法算法实现简单 ,逐行扫描法处理速度快的结论 ,并给出了对一幅图像的计算结果。更多还原

【Abstract】 Area count is often met in application of remote sensing. This paper presents two methods of automatic area computation of blocks in classified remote sensing images. These two algorithms, named line scanning and point growth, are developed from methods of graph filling in computer graphics, lines canning transformation and seed filling. In following paragraphs, these two methods are analyzed in detail and comparison is made between these two algorithms. After that, conclusion is drawn that point growth is easy to realize and line scanning is easy to access a fast processing speed. At last a computation result is given.更多还原