提出了基于BAG结构的轮廓提取算法，并在此基础上又提出了提取字符形状特征(改进方向码)的方法。
The algorithm to extract the outline based on the BAG structure was proposed. On the basis of these, the shape feature (the improved direction code) were obtained.
在特征表示方面，用形状签名代替链码来描述轮廓，从而提高了计算速度，降低了由噪声干扰和镜头形变造成的影响。
The chain code was replaced by the shape signature and used to express the contour, improve the speed and decrease the effect of noise and transformation due to camera calibration.
在特征表示方面，用形状签名代替链码来描述轮廓，从而提高了计算速度，降低了由噪声干扰和镜头形变造成的影响。
The chain code was replaced by the shape signature and used to express the contour, improve the speed and decrease the effect of noise and transformation due to camera calibration.
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