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对girl图像做二维DCT
- 对girl图像做二维DCT,并通过对变换后的某些系数置零达到压缩目的,Girl doing two-dimensional images of the DCT, and through certain coefficients transformed to achieve compression purpose of nulling
dctdwt.rar
- matlab 数字水印,dct变换,嵌入水印,简单易懂,方便学习,dct matlab
matlab
- 使用matlab的gui界面实现图像缩放旋转功能,FFT,DCT,等图像变化变换,并绘出直方图-Use the matlab gui interface for image scaling rotation, FFT, DCT, and other changes in the image transformation, and draw the histogram
matlab-code
- 对数字图像处理中的离散傅里叶变换(DFT),离散余弦变换(DCT)进行了详细的分析。其中DFT包括log视觉处理,中心点移动等。DCT包括分块处理,和保留较少系数,并比较结果。-Digital image processing of the discrete Fourier transform (DFT), discrete cosine transform (DCT) for a detailed analysis. DFT which include the log of visual pr
dct
- 利用DCT进行图像压缩(首先将图像分割成8×8的图像,对每个子图像进行DCT,这样每个子图像有64个系数,舍去50%小的变换系数,进行2:1的压缩。)-The use of DCT for image compression
Dct
- 主要研究了彩色图像数字水印算法,在DCT域进行了水印的自适应嵌入和提取,并用Matlab进行了仿真实验,测试算法的性能-The main color image watermarking algorithm in the DCT domain adaptive watermark embedding and extraction, and with the Matlab simulation experiment to test the performance of algorithm
DCT
- DCT余弦变换编码,处理效果还是不错的-DCT cosine transform coding, the treatment effect is still good
DCT
- 在MATLAB里,基于dct域,实现在二维图像中嵌入数字水印 并提取。-In MATLAB, the dct-based domain, the realization of two-dimensional images in the digital watermark embedding and extraction.
DCT-SVD-Algorithm
- 基于DCT的SVD算法,对于几何攻击有很强的鲁棒性-DCT-SVD algorithm, robustness on geometry attack
MATLAB_code_of_image_processing
- 该gui函数基本上包括图像处理里面的最基本处理,相当于一个小型photoshop。比如读取文件,几何变换中的垂直镜像,平移,旋转,缩放;正交变换的DFT,FFT,DCT,DST,DHT,DWashT;灰度处理中的反色,直方图均衡,全局线性变换,分段线性变换,指数非线性变换,对数非线性变换;图像增强里面的加噪声,平滑,锐化,伪彩色增强;图像分割里面的灰度阈值法,Robert,Laplace,sobel,prewitt,canny算子边缘检测法;图像恢复里面的直接逆滤波,维纳滤波;图像编码里面的霍夫
dct
- 这是一个matlab环境下的离散余弦变换的程序,与matlab的dct程序运行结果一样-This is a matlab environment, discrete cosine transform process, and matlab s dct program runs the same result as
DCT
- DCT域图像水印嵌入对策和算法,黄继武,程卫东,电子学报-DCT domain image watermarking strategies and algorithms, HUANG Ji-Wu, Cheng Weidong, e-Journal
dct
- 用MATLAB实现的数字水印的DCT算法,还包括本次试验的实验报告,对算法有详细的解读!-Implemented using MATLAB DCT digital watermarking algorithm, also including the test lab report, a detailed interpretation of the algorithm!
DCT
- 数字水印系统的实现——基于DCT的鲁棒水印。图像中数字水印的嵌入,分块DCT反变换-Image digital DCT
dct
- bmp DCT 压缩 对原图像进行DCT变换,数据压缩,丢弃右下角高频数据,进行DCT反变换,得到压缩后的图像-bmp DCT compression of the original image DCT transform, data compression, discarding the lower right corner frequency data, DCT inverse transform, the images are compressed
dct
- 好东东哦,希望大家来下载,是 我们本科毕业设计论文成果,基于dct域的数字水印技术
MATLAB
- 实验2绿叶变色,实验3图像数字化显示,实验4图像类型转换,实验5对比度增强,实验6直方图均衡化和规定化,实验7噪声添加和空域滤波,实验8边缘增强和边缘检测,实验9彩色图像增强,fft,dct,dwt变化及压缩,滤波器,实验20运动退化和维纳波复原,实验21图像的几何畸形校正等实验的代码和报告-Experiment 2 leaves change color, 3 digital image display, the image type conversion, 4 5 contrast enha
nsf5_simulation
- nsf5隐写算法,DCT的升级版,MATLAB实现,可以抵抗一般的DCT隐写分析(The algorithm nsF5 evolved from the F5 algorithm originally proposed by Andreas Westfeld in 2001. F5 decreases the absolute value of DCT coefficients and incorporates matrix embedding - a coding scheme that de
DCT
- dct 隐写,用MATLAB实现的,可用(dct steganography with matlab)
图像离散余弦去噪
- matlab实现图像离散余弦变化,并对含有不同方差的高斯噪声图像进行去噪处理,利用PSNR和PMES对四种结果图进行对比,得出该去噪效果。