The problems of data reduction of vector curve are discussed. Douglas-Peucher Algorithm is introduced,its advantages and disadvantages are pointed out.
讨论了矢量曲线数据压缩的问题,介绍了Douglas-Peucker法并指出了其优缺点。
参考来源 - 矢量曲线的特征点提取·2,447,543篇论文数据，部分数据来源于NoteExpress
It measures how much a vector field goes across the curve.
它度量有多少向量场穿过了曲线。
Then actually there are ways you can use basically differentials and constrained partials to figure out what the tangent vector to the curve is and so on.
然后，可以用微分关系,或受约束的偏微分来表示,曲线的切向量，就是这样了。
Let's say that I have a plane curve and a vector field in the plane.
有一条平面曲线和这个平面上的向量场。
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