The purpose of this paper is to transform black - white raster image into vector storage after preprocessing and vectorizing steps . an improved vectorization algorithm is presented after theoretically analyzing and comparing different vectorization methods 采用模式識別技術(shù),將二值點(diǎn)陣圖像信息通過預(yù)處理、矢量化處理等環(huán)節(jié)轉(zhuǎn)換為矢量信息存儲是本文研究的主要目的。