查询词典 directional derivative
- 与 directional derivative 相关的网络例句 [注：此内容来源于网络，仅供参考]
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It is not so for nonlinear operators, such as the directional derivative along the gradient.
它不是所以为例如沿着坡度方向的派生物非线性的操作员。
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The gradient of f; its dot product with uw is the directional derivative of f in the direction of w
f f 的梯度；它与 uw 的内积为 f 在 w 方向上的方向导数
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This formula first scales the magnitude to become the average arc length, and then it scales again to account for the other directional derivative.
这个公式首先将量级缩入成平均弧长，然后又在另一方向的导函数上进行缩放。
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According to the multi-scale propagation characteristic of image edge and noise as well as principle of edge detection using wavelet transforman,an algorithm based on cubic B-spline wavelet and directional derivative is presented.
根据图像边缘及噪声的多尺度传播特性和小波边缘检测的基本原理，提出了一种基于方向导数和三次B样条小波的边缘检测算法。
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Theorem Let be differentiable at. Then has a directional derivative at in any direction and
定理 如果函数在点可微分，那么函数在该点沿任一方向的方向导数存在，且有
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In this paper, a new edge detection method——method using extremum of first directional derivative is proposed, based upon a general gradient edge model.
文中通过傅里叶变换，在频率域，通过求垂直于边缘的一阶方向导数，并检测其极值点来确定边缘。
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A new structure tensor integrating the second-order directional derivative information is designed, which can precisely analyze complex weak edges in the image.
摘要一致性扩散是分析图像中定向结构的重要的预处理步骤，现有的一致性扩散图像增强方法难以识别图像中的弱边界。
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Edge detection ; first directional derivative ; extremum ; Fourier transform
边缘检测；一阶方向导数；极值；傅里叶变换
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In the new method proposed, gradient direction is not directional derivative but optimized result of chaos search in local area.
该方法先在局域内用混沌优化搜索局域最优点，再将此最优点作为梯度方向，通过改变局域范围跳出局部寻优区域。
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The main results, obtained in this dissertation, may be summarized as follows:1. In chapter 2, the differential property of the optimal value function with a non-compact set is studied. The expression of its lower-Hadamard directional derivative is obtained.
第2章研究了非紧致集上最优值函数的微分性质，首先给出了最优值函数的Hadamard下方向导数的表达式，其次在最优值函数的有效域为非空凸集的情况下刻画出了次微分的表达式。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。