GIS、RS数据格式转换新技术研究

矢量格式数据和栅格格式数据的相互转换技术是实现 ＧＩＳ、ＲＳ结合的关键。栅格格式数据转换为矢量格式数据时必须提取原图像上包含的拓扑信息。通过对传统区域跟踪技术的改进，本文提出了一种单边界搜索算法，能够快速、准确地实现这一转换。这种算法的关键技术是起始点的确定和区域间相邻关系的建立。

The New Research of GIS, RS Data Format Conversion Technique

The key to realize the combining process of GIS and RS is the technique of format conversion between vector data and grid data. Is is necessary to abstract the topology information from preprocessed image while converting grid data into vector data. By way of improveing the traditional region tracing algorithm, the paper put forward a kind of algorithm named as Single Boundary Searching Algorithm (SBSA). which can finish such data conversion quickly and exactly. The key techniques of the algorithm is searching starting point and obtaining neighbor relationships between regions.