本文提出一种算法实现单连通区域的线性四元树表示转换成区域边界的4 -方向链码描述。
An algorithm is presented for converting the linear quadtree representation of a simply connected region into a 4-direction chain code description of the region's boundary.
采用方向链码记录轮廓信息，它依据轮廓走向的顺序来记录数据，这对以后的光顺处理工作将是十分方便的。
The directional chain code is used to record the contour information data according to the trend of the contour, and this will be very convenient for the smoothing process later on.
根据轮廓链码，给出了一个新的轮廓方向的判断方法。
According to the chain codes, the paper gives a new method to judge the contour direction.
然后把各个区域的灰度描述值按着规定的方向连接起来，生成一个用于检索图象的链码。
The values are chained up in a definite direction to form the so called chain code.
然后把各个区域的灰度描述值按着规定的方向连接起来，生成一个用于检索图象的链码。
The values are chained up in a definite direction to form the so called chain code.
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