在预处理阶段，分析纹理样图中特征点的全局分布，并计算样图结构坐标。

In the preprocessing stage, the global distribution of feature points in the sample texture was analyzed and structural coordinates of the sample texture were computed.

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对于刚体对象，大部分碰撞检测算法所依赖的数据结构都可以在预处理阶段处理完毕。

For rigid object, the data structures that most collision detection algorithms depend on end in the pre-processing phase.

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在预处理阶段，利用彩色HSV模型分割原IC图像，然后用形态学开运算消除背景噪音。

In preprocessing phase, the IC image is segmented using HSV color model and the background noises are removed from the IC noisy image by the morphological operating.

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