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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
ImgComBasedonWavletandNN
- Matlab实现图像压缩与重构步骤 ① 对图像进行小波分解，得到第一层分解的低频系数和高频系数。 ② 保留低频系数，对高频系数进行基于神经网络的矢量量化编码，达到压缩。 ③ 根据码书以w还原高频系数 ④ 根据保留的低频系数和还原的高频系数重构图像 -Matlab realization image compression and the heavy construction step (1) pair of picture carries on the wavelet to
2recover
- 将水印加在低频区域可以具有较好的鲁棒性 将水印加在高频区域可以获得较好的透明性, 但鲁 棒性差 将水印加在中频区是一种鲁棒性与透明性 的折中方案。-watermark added to the low-frequency region can have good watermark robustness added to the high frequency region can be made good through Ming, but the poor robust wate
tuxiangronghe
- 本文给出了一种混合多级式多聚焦图像融合方法。对于三层小波分解的多聚焦图像融合，每幅图像被分解为三层十个频带。对这十个频带本文分别采用三种方法进行融合。对于低频系数，本文仍然采用求平均法；对于高频系数本文采用方差法和最大系数法进行融合。它们的计算量比最大系数法大一些，但是融合结果更接近于原始清晰图像，而相比于方差法，它们的计算量小的多，但是融合质量稍差一些，应用者可以根据不同的需要进行选择。-This paper presents a hybrid multi-level multi-focus
blockzigzag.rar
- 先将图像分为4*4的重叠分块,然后将各个分块的三个颜色通道的直方图平均化,再将其进行离散余弦变化,分别提取各个通道的低频系数.,First image is divided into 4* 4 sub-block overlap, and then each sub-block of the three color channel histogram equalization, and then its discrete cosine Change, were extracted from ea
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 image for two-layer wavelet decom
LowpassFiltering
- 本实验要求要求实现高斯低通滤波器的程序，并设定截至频率半径为15时得到如课本上图4.18图c的图。使低频通过而使高频衰减的滤波器成为低通滤波器，被低通滤波的图像比原始图像少一些尖锐的细节部分。本实验就是设计实现高斯低通滤波器。-Requirements of this experiment requires low-pass Gaussian filter procedure and set the frequency up to a radius of 15 textbooks, such a
belixiangditong_pinghua
- 数字图像处理，频域滤波：理想低通滤波器、梯形滤波器、巴斯沃特滤波器-Digital image processing, frequency domain filtering: an ideal low-pass filter, ladder filters, Bath Water Filter
反演解析算法
- 仿真获取四幅互差半个像素的低分辨率图像，利用反演解析算法重建出一副高分辨率图像，属于亚像元技术或者超分辨率技术。-Simulation Interoperability poor access to four half-pixel low-resolution images, the use of inversion algorithm for the reconstruction of an analytic high-resolution images, belong to sub-pixe
Imagelow-passfilter
- 低通滤波容许低频信号通过, 但减弱[或减少]频率高于截止频率的信号的通过。对于不同滤波器而言,每个频率的信号的减弱程度不同。-Low-pass filter allows low-frequency signals, but weakened [or decrease] the frequency higher than the cut-off frequency of the signal through. For different filter for each frequency of
wavelet_dec
- 利用小波冗余算法实现图像的高频和低频纹理特征的提取-Redundant algorithm using wavelet implementation of high-frequency and low frequency image texture feature extraction
junhenghua
- 直方图均衡化，使图像高频部分和低频部分均衡-Histogram equalization, so that part of the image high frequency and low frequency part of a balanced
li11_7
- 利用小波分解，去掉图像高频部分，只保留低频部分的图像压缩实例-The use of wavelet decomposition to remove high-frequency part of the image, leaving only the low-frequency part of the image compression examples
miyao
- 本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力。-In this paper, two-dimensional chaotic map based on digital image watermarking algorit
li6-3
- 用小波变换实现低频和高频图像的重构，实验效果良好，请参考学习交流-Using wavelet transform to achieve low-frequency and high frequency image reconstruction, experimental result is good, please refer to study the exchange of
WaveletImageFusion
- 该程序是用小波的方法对两幅图像进行融合。在低频系数对小波系数采用基于区域方差的加权融合方法处理,高频系数采用基于像素点小波系数绝对值取大的规则进行融合。该方法避免了图像融合过程中因平均化而出现的模糊现象, 融合后的图像内容更加清晰, 更容易识别。-The program realized to fuse two images by the method of wavelet. In the low-frequency coefficients of the wavelet coefficient
vtkfftandifft
- 用vtk对一幅图像做FFT,在频域加上图像去掉了低频信息的高频信息，最后做IFFT可看到图像细节被加强。-to do FFT with an image using VTK, remove the low-frequency information in the frequency domain and add the high-frequency information, after doing the IFFT, we can see more ditails.
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 64 8 bit gra
wfb2dec
- 对一幅二维的图像，进行小波分解，得到四幅子图，分别为低频，两个中频，高频分量-For a two-dimensional image, the wavelet decomposition, four sub-graph obtained were low, two medium frequency, high frequency components
LOW-PASS-FILTER
- 本程序主要能实现对图像进行低通滤波，保护图像的低频信息，滤除高频信息，为图像边缘检测提供良好的环境-This procedure can realize the image is low pass filtered, low-frequency information of the protected image, to filter out high frequency information, provide a good environment for the image edge det