提出一种直接利用栅格图形游程编码进行图斑边界多边形矢量化提取的有效方法。
An effective method of vectorization in which both raster graphics and image data are converted into polygon features through tracing the run-length outline is developed.
利用存储在数据文件中的采样数据生成属性信息分布图，实现用栅格图形来表达基础农田信息；
Using these data stored in the opened data file, a grid graph expressing the distributing status of attribute information in a farm will be created on the computer's screen.
GIMP是一个流行的栅格图像编辑应用程序，适用于几乎所有现代图形计算平台，提供许多与adobe Photoshop相同的功能。
GIMP is a popular raster image editing application that is available for almost all modern graphical computing platforms and provides many of the same capabilities as Adobe Photoshop.
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