In addition, gradient direction constraint of edge point was introduced. Matching algorithm based on aforementioned constraints was proposed.

此外还介绍了边缘点的梯度方向约束，给出了基于以上约束条件的边缘线匹配算法。

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To construct a valid smoothness constraint, an edge-directed tensor diffusion is used, which can automatically select to denoise or to enhance edge according to the direction of edges.

在光滑性约束项的构造上，构造了一种基于边缘定向扩散的各向异性张量型扩散方程，能有效地根据边缘的方向确定是增强边缘还是滤除噪声。

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Then the matching support can be calculated according to length distortion, direction distortion, gray distortion, and double faces constraint.

然后，根据影像的长度变形、方向变形、灰度变形及双向一致性条件，计算匹配支持度；

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This meant the council had no real sense of direction, or strategy, for achieving savings at a time of increasing financial constraint.

BBC: Minister to step in over council