形态识别包括：局部特征点及其方向，弯曲的结构特征，整体描述参数以及拓扑特征。

The shape identification includes the local character point and its direction, the curve structure, the global parameter and topology trait.

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根据像素点的梯度方向和直线局部特性提出了一种新的亚像素直线特征检测方法。

A new method is proposed according to the pixels gradient direction and the lines local property.

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首先提出了局部图像的梯度估计方法，称之为BEG(梯度的最佳估计)算法，用来提取图像的纹理方向特征参数。

First, a method to estimate the local image gradient, called the BEG (best estimation of gradient) algorithm was proposed to extract the texture orientation parameters.

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