[数]梯度向量

We discuss several different definitions of directional derivative and gradient vector.───摘要讨论了几种不同的方向导数和梯度的定义.

prefer, that's where the gradient vector is zero.───认为梯度向量为零也是可以的。

Now, what's the gradient vector?───现在，梯度向量是什么呢？

The gradient vector would be going perpendicular to the level.───梯度向量应该垂直于等值线。

In this paper the transmission of paraxial light beams was analyzed based on the gradient vector potential of electromagnetic field.

We discuss several different definitions of directional derivative and gradient vector.

At the same time, how to get the approximate road hollow position is solved to realize the road contour extraction by gradient vector flow model with iterative solution.

A new method of gravity gradient vector field for quantitative determination of field source is described in this paper.

According to features of edge gradient maps of face images, a new eye feature extraction algorithm based on gradient vector flow field was proposed.