A new image watermarking algorithm based on real discrete Fourier transform is proposed in the paper.
提出一种基于实数傅里叶变换的数字水印新算法,利用Arnold变换将水印图像置乱,再将置乱后的二值水印嵌入到实数傅里叶变换域的相位中。
Performance analysis of filtering algorithms based on Fourier transform;
常见傅里叶变换的滤波性能分析
Transient harmonic analysis algorithm using wavelet transform and Fourier transform;
小波变换与傅里叶变换相结合的暂态谐波分析方法
A palmprint recognition system using two-stage match method based on Fourier transform;
一种基于傅里叶变换的双级匹配掌纹识别系统
A Study on Fourier Transformation Demodulating Theory of the Gap of Optical Fiber Fabry-Perot Sensor;
光纤法布里-珀罗传感器腔长的傅里叶变换解调原理研究
A three-dimensional Fourier transformation migration method of magnetotelluric data and its application;
大地电磁资料三维傅里叶变换偏移方法及其应用
The principle for harmonic detecting and analyzing based on Fourier transformation was focused on.
重点阐述了采用傅里叶变换的方法对谐波进行检测和分析的原理,对虚拟仪器技术的特点和优点并与传统仪器分析技术进行了初步对比。
FFT-based orientation identification algorithm in fira;
基于傅里叶变换的Fira机器人朝向角辨识算法
The resulting binary image was transformed using FFT method.
用适当方法对纱线图像作二值化处理,提取表面纤维图像,并根据图像分析技术中的傅里叶变换原理,对有关像素坐标进行线性回归确定纱线捻度,与手工测试相比,用图像处理测试纱线捻度的方法是可靠、准确、快捷的。
The proposed method overcomes the shortcomings of FFT-based method such as sensitivity to noise and inaccurate performance in non-stationary environments.
针对基于傅里叶变换(FFT)的谐波分析方法易受噪声干扰和对暂态谐波处理精度差的缺点,提出了一种基于小波包变换的谐波分析算法。
Digital watermarking algorithm based on RDFT
基于实数傅里叶变换的数字水印算法研究
Realization of Fast Fourier Transform Based on FPGA in Real-time Spectrum Detection
实时光谱探测中傅里叶变换的FPGA实现
Simple Method to Study the Fourier Transform of Object
研究物体分数傅里叶变换的简单方法
The MIMO-OFDM System Based on the Optimal Fractional Fourier Transform
基于最优分数阶傅里叶变换MIMO-OFDM系统
Complex-order Fourier Transforms and Their Optical Implementation;
复数阶分数傅立叶变换及其光学实现
Fourier transform infrared spectrometer
傅里叶变换红外光谱仪
Fourier transform Ramman spectroscopy
傅里叶变换拉曼光谱学
quasi fourier transform hologram
准傅里叶变换全息图
fast-Fourier-transform analyzer
快速傅里叶变换分析仪
Fourier transform AC voltammetry
傅里叶变换交流伏安法
Fourier transform nuclear magnetic resonance
傅里叶变换核磁共振
Fourier transform infrared spectroscopy
傅里叶变换红外分光镜
fourierstieltjes transform
傅里叶 斯蒂尔吉斯变换
Fourier-Bessel transform
傅里叶－贝塞耳变换
Real-time Parameter Estimation of Torpedo Homing Signal Based on STFT and its Application
基于短时傅里叶变换的鱼雷自导信号参数实时估计及应用
Implementation of Chirp Spread Spectrum Anti-jamming Communication System Based on Fractional Fourier Transform
基于分数阶傅里叶变换的CSS抗干扰通信系统设计与实现
Study on Printed Fourier Transform Infrared Spectrum Translate into Digital Spectrum
傅里叶变换红外光谱曲线的数据转换研究
Image Digitl Watermarking Based on the Fractional Fourier Transform;
基于分数阶傅里叶变换的图像数字水印