函数的变差 meaning in English

variation of a function

Then , after a more systematic study , we show that variations with respect to fuzzy set functions have many similar properties to those of variations with respect to set functions
而后，通过对其进行较系统的研究我们发现模糊集函数的变差具有许多与集函数的变差极其相似的性质。
At the same time , according to the excellent capability of ip curves , we study fitting and description of objects , determination of invariants of objects , symmetry detection and recognition of objects based on ip curves . in all , the main contributions in the dissertation are as follows : ( 1 ) a method of determining automatically the scale of the multiscale edge detection is proposed based on the variant distance of the variogram function , and a method of segmenting texture images is also presented . the variograin values are taken as stochastic and structural properties of texture images and variant distance is taken as the size of image window
同时，基于隐含多项式曲线良好的物体描述与识别能力，对物体边界轮廓的拟合、描述、不变量特征的提取、识别以及物体对称性检测作了系统的研究，主要成果及创新之处有：（ 1 ）基于变差函数的变程，提出了图像多尺度边缘检测中尺度大小的自动确定方法；将变差函数的变差值作为纹理的统计和结构特征，依据变程确定窗口大小，给出一种新的纹理图像的分割方法。