极半径

基于极半径不变矩的平面单足足迹识别

Recognition for plane single-footprint based on polar radius invariant moment

基于极半径傅立叶子的木材细胞轮廓描述方法

Description Method of Wood Cell Contour Based on Fourier Descriptors of Polar Radius Function

用于模式识别的极半径不变矩

Polar-Radius-Invariant-Moment for Pattern Recognition

该文提出的极半径不变矩，既可用于区域目标的识别，也可用于边界形状的识别。

These moments can be used for both the boundary shape recognition and the interior region shape recognition .

本文采用了极半径不变矩特征提取的方法，这种方法对对称性不敏感，无论对于边界，还是区域都有很好的识别效果。

This paper used a radius constant torque feature extraction method , this method is not sensitive to the symmetry , no matter for boundary , or region has good recognition effect .

对割前脱联合收割机摘脱割台流场特性进行了分析，认为摘脱滚筒周围气流速度随极半径增加而减小，方向与极半径垂直，建立了气流流速分布方程。

The air flow rate around stripped rotor was analyzed and studied . The velocity decreased with the increasing of the radius and the direction was perpendicular with the direction of radius .

介绍了均差函数的算法原理，提出一种边界Legender描述子，分析了基于极半径均差函数，分别颅骨边界特征进行提取，根据实验结果分析了各自的优缺点。

It introduced the principles of equal difference function algorithm , and some other equal difference function derived from which on this basis , features of skull boundary and region are extracted by using those different descriptor , then based on experiment results the respective advantages and disadvantages are analyzed .

研究了直径为2的图及其一类子图，分别刻画出其邻接谱半径达到最大时的极图，并对极图的谱半径上界进行估计。

We study the graphs with diameter 2 and one class of their subgraphs and characterize the extremal graphs whose adjacency spectral radius is the largest in these two classes , respectively .