| 1. | Polar coordinate system
极坐标系统 |
| 2. | The study on the methods of obtaining the solution of the derivation of the equilibrium equations under polar coordinate system
在极坐标系下求平衡微分方程解的方法研究 |
| 3. | This article was to offer the necessary condition and appliction of differentiable complex function in polar coordinates system
摘要给出极坐标形式的复变函数的可微性充要条件的证明及其重要应用。 |
| 4. | Firstly , the thesis devotes to induct and develop the methods and properties for the rational triangular bezier and b - splines in polar coordinates system
首先，归纳总结极坐标有理b zier方法和b样条方法以及它们的性质。 |
| 5. | Secondly , the various conic arcs and conies are generated by the rational triangular bezier and the b - spline method in polar coordinates system
其次，给出圆锥曲线弧及其补弧的三角有理b zier表示；以及任意角度二次曲线弧的极坐标b样条表示。 |
| 6. | Governing equations of a modified k - model is derived in a three - dimensional cylindrical polar coordinate system , and an available equation is produced
首先给出单相螺旋流流场在三维圆柱坐标下的修正-湍流模型的控制方程，得出控制方程组的通用形式。 |
| 7. | This paper proposes a subblock - based image retrieval method under the polar coordinate system for retrieving trademark image . after preprocessing the trademark image , the regular binary - image is obtained
针对现有的四叉树分块方法的不足,提出了一种极坐标下的分块检索方法。 |
| 8. | The major work implemented in this paper is presented as follows : ( 1 ) an improved discrete fast polar fourier transform algorithm ( called dpft for short ) is proposed which fast and effectively computes the 2d discrete fourier transform in polar coordinate systems
论文的工作主要包括：一、提出一种改进的离散极坐标付立叶变换( dpft )的快速算法，并在此基础上，提出一种基于dpft的纹理分类算法。 |
| 9. | Because the fourier transform is widely applied in engineering and the polar coordinate systems has superiority in data " rotation and scaling , the improved dpft algorithm can also be implemented in many fields such as image registration , image retrieval and radar signal processing
由付立叶变换在工程应用中的广泛性和极坐标系在处理二维数据旋转和尺度变换上的优越性，该算法也可用于图象配准、图象检索和雷达信号处理等应用领域。 |
| 10. | This paper does research mainly on content based trademark image retrieval , especially on subblock - based image retrieval , presenting a new subblock - based image retrieval method under the polar coordinate system for retrieving trademark image , and designs trademark tmage retrieval system based on integrated features
本文对基于内容的商标图像检索,尤其是对分块检索方法进行了研究,提出了一种新的基于极坐标下分块的商标图像分块检索方法,并设计开发了一个基于综合特征检索的商标图像检索系统。 |
