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【Special Effects】 DCT DL : 0: 用于bmp格式图现象的dct编码和解码，实现中没有考虑其他尺寸的图片，所以想要压缩不同尺寸的图像请自行修改-DCT
Update : 2024-05-16 Size : 4096 Publisher : wangcheng
【matlab】 DCTMATLAB DL : 0: DCT数字水印算法及其MATLAB实现.pdf-DCT&&MATLAB实现.pdf
Update : 2024-05-16 Size : 131072 Publisher : shaivas
【Special Effects】 BwAdd_Y_ColorImage DL : 0: matlab程序添加水印的DCT算法，先将水印加密，然后嵌入图像中-matlab program to add a watermark in the DCT algorithm, first the watermark encryption, and embedded images
Update : 2024-05-16 Size : 2048 Publisher : 高坛
【matlab】 MATLABimagecompression DL : 1: 共7个matlab程序及两幅原始待处理图像，功能是图像压缩的实验，分别运用了DCT（1个程序），小波变换（5个程序）和小波包变换（1个）对图像进行压缩，各个程序的作用及程序注释已在程序中做了详细说明,程序均可直接运行-matlab program for image compression ,using DCT wave,wavelet,wavelet packet methods respectively .
Update : 2024-05-16 Size : 49152 Publisher : John
【Special Effects】 embed DL : 0: 图像置乱后嵌入音频中，用于dct域的音频水印处理-After scrambling embedded audio, audio for the dct domain watermarking
Update : 2024-05-16 Size : 2048 Publisher : 凡超
【Special Effects】 extract DL : 0: 水印嵌入后的提取，在dct域音频水印中的基础应用-After the extraction of the watermark embedded in the dct domain based on application of audio watermarking
Update : 2024-05-16 Size : 2048 Publisher : 凡超
【2D Graphic】 FreqCalculate DL : 0: 各种变换：// FFT() - 一维快速付立叶变换 // IFFT() - 一维快速付立叶逆变换 // Fourier() - 二维快速傅立叶变换 // IFourier() - 二维快速傅立叶逆变换 // DCT() - 一维快速离散余弦变换 // IDCT() - 一维快速离散余弦逆变换 // FreqDCT() - 二维快速离散余弦变换 // IFreqDCT() - 二维快速离散余弦逆变换，图象的二维离散小波变换-Various transformations:// FFT ()- one-dimensional Fast Fourier Transform// IFFT ()- one-dimensional inverse fast Fourier transform// Fourier ()- two-dimensional fast Fourier transform// IFourier ()- D Inverse Fast Fourier Transform// DCT ()- one-dimensional fast discrete cosine transform// IDCT ()- Fast one-dimensional inverse discrete cosine transform// FreqDCT ()- two-dimensional fast discrete cosine transform// IFreqDCT ()- two-dimensional fast inverse discrete cosine transform, discrete wavelet transform two-dimensional image
Update : 2024-05-16 Size : 6144 Publisher : lcy
【Special Effects】 DCTtransformation DL : 0: DCT变换的基本思路是将图像分解为8×8的子块或16×16的子块，并对每一个子块进行单独的DCT变换，然后对变换结果进行量化、编码-The basic idea is to transform DCT the image is decomposed into 8 × 8 sub-block or 16 × 16 sub-blocks, and each separate sub-block DCT, and then quantify the results of the transform coding
Update : 2024-05-16 Size : 60416 Publisher : 孙一
【Audio program】 31767689audiowatermark DL : 0: 基于离散余弦变换的数字音频水印技术,可供毕业设计的同学参考-DCT-based digital audio watermarking technique，could be a reference for the students under final year projects
Update : 2024-05-16 Size : 3072 Publisher : WB
【VHDL-FPGA-Verilog】 DCT_IDCT DL : 0: verilog code for DCT and IDCT (JPEG)
Update : 2024-05-16 Size : 63488 Publisher : Dang Tien Dat
【VHDL-FPGA-Verilog】 dct DL : 0: JPEG Compression and Ethernet Communication on an FPGA
Update : 2024-05-16 Size : 44032 Publisher : Dang Tien Dat
【matlab】 Fingerprint_Enhancement_Based_on_Discrete_Cosine_ DL : 0: fingerprint enhancement using DCT
Update : 2024-05-16 Size : 740352 Publisher : Ramkumar
【Graph Recognize】 Imgv1 DL : 0: set of action on image , rotation, edge detection,de-noise by DCT,and face recognition by PCA
Update : 2024-05-16 Size : 11264 Publisher : malike
【matlab】 12345 DL : 0: 彩色数字水印的程序，实现在彩色图像中通过DCT变换来嵌入水印信息-Color digital watermarking process to achieve the color image by DCT transform to embed watermarks
Update : 2024-05-16 Size : 424960 Publisher : song
【matlab】 dct2_embed DL : 0: a code that inserts ur given watermark in an image using the dct domain
Update : 2024-05-16 Size : 1024 Publisher : Umair
【matlab】 acidct DL : 0: 程序包，包含aci，dct，gabor，kernelset，LPsvmclass五个程序。希望对大家的研究有用-Package includes aci, dct, gabor, kernelset, LPsvmclass five procedures. Hope to be useful research
Update : 2024-05-16 Size : 7168 Publisher : keke
【matlab】 DCTchange DL : 0: matlab中的dct变换，在图像中利用dct变换嵌入水印，并提取-The dct matlab transformation in the image watermarking using dct transform, and extract
Update : 2024-05-16 Size : 1024 Publisher : ztj
【matlab】 Myproject DL : 0: It is a laboratory work from bsuir, where foto can be normilized by brightness, contrast, algorithm JPEG, dct idct
Update : 2024-05-16 Size : 1286144 Publisher : Andrew
【Graph program】 signature DL : 0: 该目录包含了基于可移植的C语言的数字水印算法的代码。这些代码具有示范性的意义，且有一定的鲁棒性。需要安装NetPGM的程序包（用来存取pgm格式图像），然后才能在linux下面编译。 NetPGM是图像文件的输入/输出软件包。可以在网上搜索得到。我们已经对 256灰度级，512×512大小的图像进行了测试。程序编译后的调用格式如下（以encode为例）： wm_cox_e -s cox.sig -o wm_image.pgm image.pgm 其中，-s表示要添加的水印信号，cox.sig是信号文件。 -o表示输出图像文件名为wm_image.pgm， image.pgm为输入文件名。几个辅助程序： cmp_pgm 计算差分图像，PSNR等 cmp_dct 计算全帧DCT域的差分图像 cmp_dct8x8 计算8×8大小的DCT域差分图像比如说，为了产生两个PGM图像的差分图像并计算它们的PSNR，命令如下： cmp_pgm -p -i original.pgm -o diff.pgm watermarked.pgm 产生水印信号： gen_cox_sig -o cox.sig 程序将产生适合512×512大小，8-bit灰度的pgm图像的水印信号。水印提取： wm_cox_d -s cox.sig -i lena.pgm -o cox.wm cox_lena.pgm 请注意，cox的算法需要原始图像做参考来提取水印，压缩后的水印将存储在cox.wm中。-This directory contains the C-based portable digital watermarking algorithm code. The code has a demonstration Of meaning, and there is a certain degree of robustness. NetPGM need to install the package (to access the pgm format images), and then to compile in linux below. NetPGM is the image file input/output package. Can search by. We have already 256 gray level, 512 × 512 size images were tested. Procedure call format, compiled as follows (in encode an example): wm_cox_e-s cox.sig-o wm_image.pgm image.pgm Which,-s that you want to add the watermark signal, cox.sig is the signal file. -O said output image file name wm_image.pgm, image.pgm for the input file name. Several auxiliary programs: cmp_pgm calculate the difference image, PSNR, etc. cmp_dct full frame DCT domain calculation of difference image cmp_dct8x8 calculate the size of 8 × 8 DCT domain differential image For example, in order to produce two PGM images and calculate their differ
Update : 2024-05-16 Size : 19456 Publisher : sylvia
【matlab】 matlab_watermark DL : 0: 本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的安全性。算法中,将灰度图像转换为二进制数据流,置乱后扩频调制,隐藏在宿主DCT 系数量化值中,提取时不需要宿主信号,实现水印信号的盲提取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantization DCT coefficients and then use the parity properties of 8-bit grayscale watermark embedding map, and through the PN sequence of encryption to ensure the security of the watermark. Algorithm, the gray image into binary data stream, scrambling after the spread spectrum modulation, hidden in the host DCT coefficient quantization values, the extraction does not require the host signal, the blind watermark extraction.
Update : 2024-05-16 Size : 284672 Publisher : 王秀梅

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