查询词典 transform

This paper puts forward a united Laplacian transform which is based on the differential geometry curve coordinate system,the practical numerical experiment results show that this method has a strong edge detection ability and produces the better effect compared with old method.

该文采用基于微分几何曲线坐标系下普遍的Laplacian算子进行边缘检测，从结果可以看到处理效果明显优于普通的方法。

The PSE in the curve coordinate systems are solved by the numerical techniques developed efficiently in this paper. A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. The finite-difference of governing equations with fourth-order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations.

对于曲线坐标系下的抛物化稳定性方程，文中发展了求解的高效数值方法：引进法向变换，使得在临界层与壁面之间的扰动量变化最快的区域有更多的法向网格点；导出包含边界邻域在内的完全四阶精度的法向有限差分格式，这对方程精确离散至关重要；采用全局法和局部法相结合的方法及其新的迭代公式，大大加速收敛并得到更精确的特征值。

Aiming at shadow influence problem in vision navigation process of agricultural robot, illumination invariant image based on shadow removal algorithm was introduced. An enhanced OSTU image segmentation method was used, and an optimized Hough transformation algorithm was used to extract crop line, and coordinate transform was applied to obtain navigation parameters.

该研究针对农业机器人视觉导航中存在的阴影干扰问题，采用基于光照无关图的方法去除导航图像中的阴影，然后采用增强的最大类间方差法进行图像分割和优化的Hough变换提取作物行中心线，最终通过坐标转换获得导航参数。

Coordinate transform ; ring direction ; concave-convex feature

坐标变换；环走向；凸凹性

By matrix conversion and coordinate transform, the part surface measured data can be converted into assembly model, therefore, the characteristic of part surface coherence and boundary share will be assured.

本文提出了一种基于基准点和配合轮廓的装配建模方法并在实践中应用，使摩托车配合件达到了共线的设计要求。

In order to improve display velocity, transform the seismic data to a 3-D two-valued image, trace the 3-D connected zone with ordered cross algorithm, thin the zone to get the coordinate of the reflection surface.

为加快显示速度，将一个三维地震数据体转换为三维二值图像，用有序扩展算法追踪同相面所在的三维连通域，细化后得到反射面的坐标数据。

In this paper, based on the analysis of the structure, movement principle and math model of PMSM, fundamental theories of vector control, coordinates transform and algorithm of space vector PWM are introduced and PI control, speed and position calculation methods are discussed.

本论文在分析了PMSM的结构、运动原理及数学模型的基础上，系统地阐述了PMSM交流伺服系统矢量控制的基本原理、坐标变换方法及空间矢量脉冲宽度调制波的生成算法，论述了PI控制算法和速度位置计算方法。

Mr. Zhang Zhenglang has been modeled on "Book of copulative""Premium Shifa" attempts to transform Shì instrument, in order to obtain the Shang and Zhou number of hexagrams in the 1-8 or 1-9 of these divine by stalk, but their loss, not successful.

文化 徐锡台先生认为商周时期人们以一、五、六、七、八、九这六位奇偶数排列组合成二百一十六个单卦，四万六千六百五十六个重卦，二十七万九千九百三十六爻，而六十四卦是在秦汉时才出现、在商周时期是不存在的[15]。

Fourier transform infrared spectroscopy was used to study the changes in the corncob composition during the treatment of chemical-microbial process.

产氢菌主要用酸预处理产生的可溶性糖产氢，故底物的酸预处理对玉米芯的发酵产氢非常重要。

The new method of image matching based on feature extraction and transform domain correlation is proposed in this paper.

提出了一种基于图像特征提取和变换域相关的图像匹配方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。