搜索资源列表
dm_dct_fenkuai
- 在DCT域,利用8*8分块DM方法,嵌入隐藏信息。可设置量化步长、选择各种经典的攻击方式和控制攻击强弱。返回误码率和峰值信噪比。利用Matlab编写。
图像压缩的几个MATLAB算法
- 图像压缩的几个MATLAB算法:分块编码、高斯金字塔、离散余弦变换、单值分解。-Image Compression Algorithm several MATLAB : Block Coding, Gaussian pyramid, discrete cosine transform, singular value decomposition.
lena
- 把一副图片分块8-use matlab block a picture to 8*8
4dpsk
- 4DPSK的matlab仿真例程,能够分块实现,看各位的需要了,仿真没有问题-4DPSK of matlab simulation routines that can block the realization of the need to see you, and simulation is no problem
DCT
- 图像的基于8*8分块的DCT变换编码 MATLAB编程环境 -Images based on 8* 8 block of DCT transform coding MATLAB programming environment
DCT
- 将图象分块(8*8),作DCT变换,并作IDCT:DCT是一种可分离图象变换,用来图象压缩编码,IDCT用来解压缩。-The image sub-block (8* 8) for the DCT transform, and to make IDCT: DCT is a separable image transformations, is used to image compression coding, IDCT is used to decompress.
DCT
- 一个有关DCT的matlab程序,采用分块的思路-DCT-a matlab program, the idea of using block
l1magic-1.1
- 实现对图像的分块并进行压缩感知算法的恢复-Achieve the right image sub-block and recovery of compressed sensing algorithm
singularitydetection
- 提出一种两阶段的奇异点检测方法。将指纹图像分块,求出各块的方向构成块方向图,并在块方向图的基础上利用邻域方向的分 布分析结合改进的Poincare Index方法来确定奇异点所在的候选区域,对候选区域中的像素再通过计算局部方向变化率来确定奇异点的精 确位置。将此方法用于对FVC2004 DB1_A指纹数据库的图像,实验结果表明这种方法对指纹图像中的噪声有很好的鲁棒性,并且计算简 单快速,易于实现。 -A two-phase singularity detection. Finge
matlab
- 一段基于DWT的数字水印的MATLAB代码,图像分块,水印受攻击-A DWT-based digital watermarking of MATLAB code, image segmentation, watermarking attacks
matcellpicture
- 对整个图像进行分块,再对每块进行像素点寻找,最后合并块。-cut the picture,then find the pixels which are demanded,finally merge them back to the picture
l1_cs
- 对lena.map先分块处理,然后做cs变换,观测矩阵用随机高斯矩阵,重构算法用l1算法-On lena.map first block processed, and then do cs transform, random Gaussian matrix with the observation matrix, reconstruction algorithm algorithm using l1
fen_kuai_Wavelet_OMP
- 压缩传感,MATLAB,图像重建,正交匹配追踪,打破乃奎斯特定理,图像分块处理-Compressed sensing, MATLAB, image reconstruction, orthogonal matching pursuit, breaking the Nyquist theorem, the image block processing
LinearDiscriminantAnalysis
- 提出了一种新的基于图像分块重构和线性判别分析相融合的方法,主要用于人脸识别。该方法通过计算两幅图像之间图 像块的重构均值误差,运用线性判别分析求出两幅图像降维后的欧式距离,融合重构误差和欧式距离计算这两幅图像之间的差别 程度。-A new block-based image reconstruction and the integration of linear discriminant analysis method is mainly used for face recognitio
dyq111
- 关于分形压缩的matlab代码。采用的算法固定分块的算法。适合初学者。-On fractal compression matlab code. The algorithm uses a fixed block of the algorithm. Suitable for beginners.-
matlab_watermark
- 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, quantiza
shuiyin1
- 用matlab实现的小算法程序,基于分块嵌入-Algorithm with a small matlab program implementation, block-based embedding
matlab-RBF
- 给予模型分块逼近的机器人RBF网络自适应控制,内有mdl模型和s-fun函数。-The approximation given model block robot RBF network adaptive control within mdl model and s-fun function.
数字图像处理DCT矩阵分块变换matlab程序
- 数字图像处理DCT矩阵分块变换matlab程序
matlab
- 基于DCT数字水印算法的Matlab实现源代码,1. 将文字水印和图像水印转换为二值序列水印; 2. 对水印进行置乱,提高其安全性; 3. 选择合适大小的块,给出DCT域中频分块编码方案;-DCT-based digital watermarking algorithm Matlab source code, a text watermark and image watermark converted into a binary sequence watermark .. 2 wa