图象的GD表示法的子图象抽取方法

EXTRACTING SUBIMAGE FROM AN IMAGE REPRESENTED BY GD METHOD

在图象数据库的存贮结构及图象的数据压缩等应用中,GD等这类线性四元树表示方法得到了大量的研究。在对图象的各种处理中,子图象的抽取是个很基本的操作,但用线性四元树方法存贮图象并在其上实现这一操作并不象数组表示那样简单、直观。文内给出了一个基于GD表示方法的子图象抽取方法。

In the application of image database and data compression,the linear quadtree methods such as GD are studied very much.Among the various image manipulations,extracting a subimage from an image is a very common one,however,GD representation is not a straightforward one to do it.In this paper,an extracting method is presented for the GD representation.