搜索资源列表
DCT
- 这是用于本科生信息论与编码课程 余弦DCT程序 有两种方法实现-THIS PROGRAMME IS DCT BY MATLAB
DCTvideowatermark
- DCT based video watermarking using pseudo random factor
dmt
- MATLAB FFT DCT 傅里叶变换-hao MATLAB FFT DCT
pic393
- 频域法加入数字水印的原理是首先将原始信号(语音一维信号、图像二维信号)变换到频域,常用的变换一般有DWT、DCT、DFT、WP和分形。然后,对加入了水印信息的信号进行频域反变换(IDWT、IDCT、DFT、WP),得到含有水印信息的信号。-Frequency-domain digital watermarking method by adding the principle is that first of all, the original signal (voice signal of on
dwprotected
- Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection an
irisdctprot
- 基于DCT的虹膜识别算法, 需要Matlab Signal & Image Processign Toolbox 才可以用 -DCT-based iris recognition algorithm, the need for Matlab Signal & Image Processign Toolbox can be used
dct_main
- DCT C code This converted from Matlab version-DCT C code This is converted from Matlab version
matlab
- matlab做的基于DCT变换的图像压缩-GOOD
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
JPEGcompression
- 本程序实现了一个基本的灰度图像的JPEG压缩过程。其中的函数可实现DCT变换。-It shows what a jpeg compression is all about.
jpeg_encode+decoderhojoon
- This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
rgbquadtreehojoon
- This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
KochZhaoDCT
- DCT-based watermark algorithm of Koch-Zhao for semitone images
MatermarkingDWT_DCT
- 提出一种基于DWT和DCT域的有意义二值图像数字水印算法 利用Arnold变换对水印序列进行置乱,消除 象素的空间相关性,增加水印的安全性 而结合小波变换和离散余弦变换的特性,将水印信息嵌入到图像变换域的低频和 中频系数中,提高水印的鲁棒性和不可见性 实验证明该算法具有较好的抗压缩、抗噪音和抗剪切性。-Watermarking in DWT and DCT area
EasyWaterMarkingCodes
- 数字水印的入门代码,包括LSB DCT CDMA DWT,在原有收集上加了详细的注释,易于学习理解-Watermarking entry code, including LSB DCT CDMA DWT, add in the original collection of detailed notes, easy to learn to understand
main
- 本算法用matalab语言编写,实现了在DCT 域内应用RBF 神经网络检测图像水印-This algorithm with matalab language, the DCT domain RBF neural network application image watermark detection
hw2
- 1.对一个256*256的图像进行DCT变换得到图像D,将D得斜下角数值置为零,然后进行DCT反变换. 2.对源图像进行K-L转换 1和2比较-1.Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. 2.. Apply DCT to these sub images, and get the transfo
idct
- 这段程序是前面dct程序嵌入的逆过程,即进行信息的提取,从而获得置乱原始信息-Dct in front of this program is the reverse process of embedding process, namely, the extraction of information, thereby scrambling the original information obtained
watermark
- 置乱变换后图像的lsb嵌入,以及提取程序,另外还包含psnr程序,可以与本人上传的dct频域嵌入进行对比-Image scrambling transformation lsb embedding, as well as the extraction procedure, also includes psnr program, can I upload dct compare the frequency domain embedding
jpeg
- 本上传是在matlab环境下实现图像的基于DCT的JPEG压缩,上传内容包括主程序、子函数和实验原理pdf。可供朋友学习与参考。-This upload is in the matlab environment to achieve the image DCT-based JPEG compression, upload content, including the main program, subroutine and experimental principles of pdf. For