1) DCT filtering
余弦变换滤波
2) inverse chord transformation filtering
反弦变换滤波
3) Cosine transform
余弦变换
1.
Improved cosine transform profilometry for the automatic measurement of 3-D objcet shapes;
余弦变换三维物体轮廓术的改进
2.
Using cosine transform for forward modeling and inversion of gravitational anomaly on density interface.;
基于余弦变换的密度界面重力异常正反演研究
3.
Research on sine and cosine transform of broad sense Fourier
广义Fourier正弦、余弦变换研究
4) discrete cosine transform
余弦变换
1.
And it also uses discrete cosine transform to data compression.
通过余弦变换进行数据压缩 ,作为神经网络的输入量进行轴心轨迹的自动识别 ,使得系统在较少输入维数的前提下获得比较高的系统自动识别率 。
2.
Firstly the original image is first-level discrete wavelet transformed,the first level low frequency coefficients are discrete cosine transformed,and then DCT mid-frequency coefficients are adjusted in which pseudorandom number sequences ({-1,1})are embedded.
提出了一种基于小波变换和余弦变换的鲁棒水印算法 。
5) DCT
余弦变换
1.
Thirdly,a characteristic vector of the image is acquired using a dis- crete cosine transform(DCT).
在水印嵌入部分:首先对宿主图像进行小波分解、嵌入水印,再通过余弦变换求得该水印图像的一个特征向量,利用该特征向量和水印信息通过HASH函数生成一个二值逻辑系列,将该序列作为密钥;水印提取部分为:对待测的图像进行小波变换,再通过余弦变换求得待测图像的一个特征向量,利用该特征向量和密钥通过HASH函数提取出水印。
2.
An improved discrete cosine transform-LMS (DCT-LMS) adaptive algorithm is used to cancele coloured noises in phoning.
为便于用低成本的高速信号处理芯片实现语音降噪 ,对改进的离散余弦变换域 LMS( Discrete cosinetransform-LMS)自适应算法应用于噪声抵消系统进行了实验研究。
6) cosine filter
余弦滤波器
1.
The method uses the cosine filter(CF)and amplitude-frequency coefficient correction to filter out the real part of a phasor at the present sampling,and the imaginary part of the phasor at the a-quarter-period-before sampling.
提出了一种电流电压相量的计算方法,其特征为利用余弦滤波器滤出的当前点和前推1/4周期后的点分别经幅频特性系数修正后作为相量的实部和虚部。
2.
In this paper,the wavelet analyses of ring laser gyro drift rate were implemented based on the Mallat algo- rithm in the wavelet analysis,the design of cosine filter is discussed.
在简述小波分析中 Mallat 算法的基础上,用其实现激光陀螺仪漂移特性的小波分析,讨论了余弦滤波器的设计。
补充资料：Fourier余弦变换
Fourier余弦变换
Fourier cosine transform
I议耐台余弦变换[I饭川份仪d理加田北而;Koc皿yc一uPe-o6pa”。a.e巾yp‘e] 见I议州匕变换(Fou〔屺rtla瑙form).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条