搜索资源列表
DCT
- 利用DCT变换实现两幅大小相同的图像的水印嵌入，包含水印图像的处理，水印的嵌入和提取。及PNSR的计算-DCT transform two of the same size image of the watermark embedding, contain watermark image processing, the watermark embedding and extraction. And PNSR calculation
DCT
- 编程实现DCT高通，低通滤波，并与傅里叶变换进行对比-Programming DCT high pass, low pass filtering, compared with the Fourier transform
DCT
- DCT Digital watermarking
dct
- 基于dct的伪随机序列的数字图像水印，算法较为简单，鲁棒性一般，不能很好地抵御噪声攻击-Dct pseudo-random sequence-based digital image watermarking algorithm is relatively simple and general robustness against noise attack can not
DCT
- 实现DCT变换，包括FFT快速变换，DCT逆变换的算法代码-DCT, FFT Fast Transform, DCT inverse transformation algorithm code
DCT
- 用MATLAB实现数据压缩中的DCT变换，程序里有比较详细的说明。-DCT transform data compression using MATLAB program, a more detailed explanation.
DCT
- 用VC++实现图像DCT变换及IDCT，界面友好便于实现-complish DCT by VC++
DCT
- dct image steganography
DCT-a-Hamming-coding
- 1.DCT变换，对整个图像的直接DCT变换和分块为8*8做DCT变换，并设定阈值。 2.汉明编码（7，4），译码以及找出错误图样和纠错。并在不同的转移概率的BSC道下进行传输。-DCT:Direct DCT and IDCT,blocking. hamming coding:decoding and picking up errors.
DCT-digital-watermarking-technology
- 提出了一种基于纠错编码的DCT域数字水印算法,该算法在检测时不需要原始图像,实现了盲检。并且对水印图像进行了利用超混沌置乱处理,提高了安全性能和抗攻击能力。纠错编码的引入使水印抗攻击能力明显增强。 -DCT digital watermarking algorithm based on error correction coding, the algorithm detected without the original image, blind. And watermark image o
DCT
- 进行一维，二维，三维离散余弦变换，计算变换所需时间。-One-dimensional, two-dimensional, three-dimensional DCT transform
dct-dft-fft-dst
- DFT, FFT,DST, DCT and many
DFT-and-DCT-transformations
- 二维离散傅里叶变换和离散余弦变换同属于图像的二维正交变换，它们在图像处理中有 着极为重要的应用价值。利用这些正交变换可以获得图像的频域信息，从而实现图像的增强、复原、编码和描述。本文将描述对图像进行DFT 和DCT 变换的过程。在进行DFT 变换后，还会将图像的幅频、相频特性进行置换操作后反变换，并探讨其中的规律；而在DCT 变换后，还将探讨如何选取DCT 系数点以实现图像的复原。请先阅读压缩包内的pdf文档。-This code implements the DFT and DCT tra
DCT-FT
- DTC变化，傅里叶变换，基于DCT的压缩变换-DTC changes, Fourier transform, DCT-based compression transform
Block-DCT-transform
- 分块DCT变换，基于压缩感知信号的压缩。详细阐述了信号基于DCT分块的变换算法。为后面的信号压缩和恢复做铺垫。-Block DCT transform based on compressed sensing signal compression. Elaborates the signal based on the sub-block of DCT transform algorithm . For the following signal compression and pave the wa
DCT-AND-IDCT
- VC++实现DCT和IDCT,是可以实现的。-DCT AND IDCT WRITTEN BY VC++
DCT-change
- 1.实现对lena.bmp灰度图像的快速傅立叶变换,并求其变换后的系数（幅度）分布； 2.实现对lena.bmp图像做离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换 ；-1 to achieve the fast Fourier transform on lena.bmp grayscale image, and to find the transformed coefficients (amplitude) distribution 2. To achieve lena.bm
DCT
- 数字视频图像处理大作业。MPEG-1、MPEG-2及JPEG标准中都采用了基于图像块的DCT变换编码，根据已学知识完成下列问题：-Digital video image processing operations.Mpeg-1, mpeg-2, and JPEG standard are adopted based on image block DCT transform coding, according to the knowledge to complete the following q
DCT
- 基于DCT数字水印算法的Matlab实现源代码-DCT-based digital watermarking algorithm Matlab source code
DCT
- This code will compress any image. As DCT is a lossy compression hence it will reduce the size of the image with some losses.