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频域滤波
- 频域滤波,包括梯形低/高通滤波,理想低/高通滤波,布尔沃什低/高通滤波和指数低/高通滤波等-frequency domain filtering, including the trapezoid low/high pass filters, ideal low/high pass filter, Buerwoshen low/high pass filter and index low/high pass filter, etc.
wmlow
- 基于一级小波变换的将2值图像嵌入宿主图像低频子带的水印嵌入及提取算法-based on a wavelet transform the image of two images embedded host low-frequency band and the embedded watermark extraction algorithm
watermeter
- 低频射频卡水表源代码,使用ATMEL的T5557卡-low frequency RF Card meter source code, the use of the T5557 card ATMEL
Ficp_MCZT
- 对低频段的带通信号进行高精度的时延估计,有详细说明。-Of low-frequency band signal for high-precision time-delay estimation, has a detailed descr iption.
lvbo
- 针对基于DSP的使用C++编译的数字信号的高低频滤波的编程源代码-DSP based on the use of C++ Compile digital signal high-low-frequency filter programming source code
DFT
- 自己实现的一维、二维DFT。优点:变换后的低频分量在中间,弥补了matlab库函数的不足(高频分量在中间)-Realize their own one-dimensional, two-dimensional DFT. Advantages: low-frequency components after the transformation in the middle, made up for the inadequacy of mat
matlab_frequency_analyse
- 1.产生一个连续信号,包含低频,中频,高频分量,对其进行采样,进行频谱分析,分别设计三种高通, 低通,带通滤波器对信号进行滤波处理,观察滤波后信号的频谱。 2.采集一段含有噪音的语音信号(可以录制含有噪音的信号,或者录制语音后再加进噪音信号),对其进行 采样和频谱分析,根据分析结果设计出一合适的滤波器滤除噪音信号-1. Produce a continuous signal, including low-
fft
- 由上述实验过程的图像变化可知,经过傅立叶变换和反变换及DCT离散余弦变换和反变换后,图像都发生了很大的变化,首先是经过2-D傅立叶变换后,图像数据频域出现高频数据集中,低频数据在四周的现象,然后再经过2-D傅立叶变换反变换后,图像再次恢复原始图。而2-D离散余弦变换对图像的影响也是如此。-From the above experiment, we can see the image change, after Fourier trans
Gaussiansmoothing
- 高斯平滑是去除图像噪声的一种方法,用低频滤波器处理,低通滤波器的作用就是滤掉高频分量,从而达到减少图象噪声的目的,高斯平滑指的是滤波用的模版是高斯(guass)模版,通过采样2维高斯函数得到。-Gaussian smoothing is to remove the image noise is a means to deal with low-frequency filter, low pass filter function is t
P87LPC76Xmethod
- 本压缩包内容详细介绍了P87LPC762单片机在低频节电模式和降低功耗模式下低功耗的软硬件设计方法,以及在测试过程中需要注意的有关事项-The contents of this compressed packet details P87LPC762 MCU in low-frequency power-saving mode and reduce power consumption mode, low-power hardware an
suanfa
- 给出了一种基于小波变换的图像融合方法,对小波分解后的低频分量通过度量其图像块空间频率和对比度来确定融合图 像的低频分量,对分解后得到的高频分量,选择高频系数时,基于绝对值最大的原则,并对选择结果进行一致性验证,最后重构得 到融合图像。从仿真结果可以看出,给出的方法很好地保留了多幅原图像的有用信息,融合图像清晰度和对比度都较好,是一种有 效的图像融合算法-This paper presents a wavelet-based
jiyudct
- 利用matlab实现对秘密信息的隐藏,主要是对图像进行dct变换,然后在低频嵌入信息!-Using matlab to realize the hidden secret information, mainly for image DCT transform, and then embedded in low-frequency information!
frequency
- 一种等精度的频率计,同时适合高频和低频,误差小。-A precision frequency meter, etc. At the same time, suitable high-frequency and low frequency, the error small.
lvbo
- 先由原始图像(任选)产生待恢复的图像; 利用二维小波分析对一幅图象作2层小波分解,并在此基础上提取各层的低频信息实现图像的压缩。 分别用逆滤波和维纳滤波恢复上面图像。 -First be the original image (optional) to restore the image to be generated the use of two-dimensional wavelet analysis of an ima
digitalfilter
- 设计产生一个连续信号,包含低频,中频,高频分量,对其进行采样,进行频谱分析,使用矩形窗设计不同特性的数字滤波器对信号进行滤波处理,分析所设计滤波器(画出了频率特性曲线),并对信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,同时设计出了一个友好的人机交互界面。-Designed to produce a continuous signal, including low frequency, medium freq
A-DCT-watermarking-algorithm
- 提出了一种在数字图像上实现的盲水印算法, 嵌入的水印是64 64 8 bit 灰度图。该算 法用宿主图像的8 8 分块的DCT 域低频对应系数, 进行量化取余的方法嵌入水印。-Proposes a new digital image watermarking algorithm implemented on the embedded watermark is 64
low-frequency-signal-generator
- 实现基于单片机的低频信号发生器,程序完整,参考性好-MCU-based low-frequency signal generator
Low-frequency-AC-signal-measurement
- 低频交流信号测量系统 采用12864屏幕实时显示交流信号波形,并测量Vpp和频率-Low frequency AC signal measurement system 12864 screen real-time display of AC signal waveform, and measuring the Vpp and frequency
Simple-low-frequency
- 简易低频信号源设计,用来发出各种正弦波、三角波,等波形,实用-Simple low-frequency signal source design
combining-low-frequency-and-spread-spectrum-water
- combined low frequency with watermarking