变换

Using a large data set of 1 894 images,we examine whether the colorspace transformation can increase the compactness of skin distribution and the discriminability between skin and nonskin distributions in fourteen 3D colorspaces and fourteen 2D chrominance planes.

比较结果表明：(1)颜色空间的变换并不能改善肤色紧致性、肤色-非肤色可分辨性以及分类等性能，但RGB及线性变换空间却具有较好的类可分辨性和分类性能；(2)去除亮度信息将明显降低肤色和非肤色之间的可分辨性和分类性能；(3)Bayes决策下的3维SPM的分类性能是最优和空间无关的，而其余分类器则普遍存在类似的"空间偏好性"；(4)同时采用肤色和非肤色模型的分类器的分类性能优于仅使用肤色模型的分类性能。

The analysis and distinguishment methods are proposed for the power system fault signal with wavelet transformation fast algorithm.

介绍了小波变换的基本原理，采用小波变换快速算法对电力系统中故障信号进行分析、判断。

By the analyses of different person and the same person with different expression and gesture, the number of principal component vector is determined properly under the attention to divisibility and workload.

首先对不同人以及同一个人的人脸图像进行主成分变换，然后根据得到的人脸图像类内及类间距离数值的变化结果，在充分考虑到其可分性和计算工作量的前提下，选择适当的主成分变换向量的个数并进行人脸图像的特征提取。

Subtree-structure in wavelet domain is a consequence of dependence between neighbouring pixels.

通过对小波变换和分形变换的"基函数"构造差别的分析，提出了二者在适应信源特征方面具有互补性的观点。

Fourier transformation image-processing technology was applied for determining the cross section fiber cell arrangement in hardwood. In this method, the disc-convoluted dot map from each cell radius with 10 pixels was transformed by Fourier transformation, and generated the angle distribution function in the power spectral pattern. The maximum value reflected the arrangement of the fiber cell.

利用傅立叶变换图象处理技术来测定阔叶材横切面纤维细胞排列，把表示每一个纤维细胞的半径为10个像素点的圈盘点图，进行傅立叶变换，再做能量光谱图的角度分布图，其最大值表示纤维细胞的排列。

Some well-known results on area transformation formula and variant transformation formula of double integral are improved and generalized.

对现有的有关面积变换公式和二重积分变量变换公式的结果作了相应的改进和推广。

To be specific,its generalized characteristic polynomial has positive double roots,which we proved further has only a double,root by using the affine transformation and inverse affine transformation.

为了更好地进行干涉判断，根据椭圆-椭圆外切的代数条件——广义特征多项式具有正的重根，以及进一步证明出的该正重根的唯一性结论，利用仿射变换和逆变换方法，推导出了椭圆-椭圆的不适合边界解析方程。

New concepts of the all phase Walsh biorthogonal transform and the dual biorthogonal base vectors were proposed.Based on this transform,a new image compression algorithm was introduced.

本文提出了全相位沃尔什双正交变换和对偶双正交基向量的新概念，并提出了一种基于这种变换的、新的图像压缩算法。

In this paper,a new image denoising algorithm via doubly local Wiener filtering with windows based on Stationary Wavelet Transform with the Dual Tree Complex Wavelet Transform is proposed.

提出了一种基于静态小波变换和对偶树复小波变换的加窗的双重局部维纳滤波图像去噪算法。

In this paper,we proposed a method for extracting the texture features in transform domain based on Dual Tree Complex Wavelet Transform,and applied it to unsupervised textured image segmentation.

以对偶树复小波变换为基础，提出了一种提取纹理图像变换域统计特征，进而实现图像非监督分割的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。