Several interpolation methods are discussed and compared, and Fourier description is introduced as a interpolations.
论文讨论和比较了几种插值方法，引入傅立叶描述子对轮廓线进行插值；
On the basis of analyzing shape features of tomatoes, leaves and branches, we extract features of roundness, slightness, concavity degree and denseness depending on Fourier description.
研究了西红柿、叶子、枝干的形状特征，通过傅立叶描绘子，提取基于傅立叶系数导出的如圆形度、细长度、凹度、密集度等形状特征。
In order to analyze the stability of fuzzy control systems, the description function of fuzzy controller is calculated by using the fast Fourier transformation.
提出用快速傅立叶变换计算二维模糊控制器的描述函数，并用来判别模糊控制系统的稳定性。
The expression and description methods of space curve are demonstrated. The methods of using moment, Fourier to describe the space curve is proposed.
讨论空间曲线的表达和描述方法，提出用矩和傅里叶描述符描述空间曲线的方法。
With Discrete Fourier Transforms description of 3d curved surface, transform function of forming process is discussed.
在多点成形过程中，3维曲面形状的离散傅里叶变换描述能够反映成形件的整体变形特性。
With Discrete Fourier Transforms description of 3d curved surface, transform function of forming process is discussed.
在多点成形过程中，3维曲面形状的离散傅里叶变换描述能够反映成形件的整体变形特性。
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