搜索资源列表
dctanddwt
- 对比dct和dwt在图像数字水印应用中的特点，分析其特性。-contrast Extra dwt and the application of digital watermarking images of features, analysis of their identity.
H263coder
- H.263编码器的主要特征：包括运动估计和补偿 离散余弦变换(DCT) 量化 熵编码 帧存储-H.263 coding for the main features : including motion estimation and compensation discrete cosine transform (DCT) quantify entropy coding frame memory, etc.
jpeg-6b
- Functions provided by the library Outline of typical usage Basic library usage: Data formats Compression details Decompression details Mechanics of usage: include files, linking, etc Advanced features: Compression parameter selection
dct.rar
- 已知两个不同图像块亮度数据如下： （1）分析DCT原理，采用DCT方法，编程并计算相应的DCT系数，分析系数分布特点。 （2）依据视觉特性分析量化表步长的分布特点，完成DCT系数量化。 （3）采用Z形扫描，实现输出数据的统计编码，形成Video stream。 （4）采用IDCT重建图像亮度数据，计算SAD大小，分析产生误差的原因及采用DCT进行数据压缩的原理。（ ） （5）分别利用左上角1、3、6个系数重建图像，计算相应的SAD，并由
my_dct.rar
- 程序功能：模拟DCT编码解码过程，生成带“块效应”的图像 实验图片：lena.jpg(512*512),Program features: Analog DCT codec process, generated with
zig_zag__example
- dct algorithn包含zig-zag scan以及壓縮編碼等功能-dct algorithn contains zig-zag scan as well as features such as compression coding
111111111
- 为保证网络信息传输的安全性,提出一种视频图像加密方法。该方法引入混沌系统中的Logistic映射和 Baker映射,结合H·264视频压缩编码特点,利用Baker映射对DCT (Discrete Cosine Transform)变换量化后 的块进行位置置乱, -In order to ensure the safety of information transmission network, and a video image encryption method. This met
11111111111456
- 为保证网络信息传输的安全性,提出一种视频图像加密方法。该方法引入混沌系统中的Logistic映射和 Baker映射,结合H·264视频压缩编码特点,利用Baker映射对DCT (Discrete Cosine Transform)变换量化后 的块进行位置置乱, -In order to ensure the safety of information transmission network, and a video image encryption method. This met
DCTdigtal
- DCT数字图像系统，功能不太完善，可以运行-DCT digital imaging system, features less than perfect, you can run
127
- DCT用于掌纹识别的word论文文档，比pdf更容易阅读编辑和引用，供大家学习和交流-The discrete cosine transform is a classical image processing technique, and the discriminant analysis is a commonly used image feature extraction technique. These two techniques are effectively combined in
jpeg.tar
- This project features a complete JPEG Hardware Compressor (standard Baseline DCT, JFIF header) with 2:1:1 subsampling, able to compress at a rate of up to 24 images per second (on XC2V1000-4 @ 40 MHz with resolution 352x288). Image resolution is no
lab
- 实现数字图像处理相关功能，ＤＣＴ，直方图均衡等功能-Digital image processing-related functions, DCT, features such as histogram equalization
palmprint
- Texture Based Palmprint Identification Using DCT Features
dctannprotected
- High information redundancy and correlation in face images result in efficiencies when such images are used directly for recognition. In this paper, discrete cosine transforms are used to reduce image information redundancy because only a subset of t
SVM_GA
- 提出一种基于支持向量机( SVM)和遗传算法(GA)的离散余弦变换(DCT)域盲数字图像水印方法. 该方法能自适应于图像的局部特征. 依据图像块的局部特性,利用SVM对图像块分类,自适应地确定水印嵌入强度, GA用来优化水印嵌入位置. 实验结果表明该方法有较好的不可见性和较强对抗攻击的鲁棒性.-Based on support vector machine (SVM) and genetic algorithm (GA), discrete cosine transform (DCT) doma
corrected
- OFDM is a new scheme for data transmission with several advantageous features. In this report a survey of all existing OFDM systems are being presented. Starting with simple FFT based OFDM the other variants like DCT-OFDM, Interspersed OFDM and DWT b
dsp_system
- 实现一个数字信号处理的仿真系统 。具有界面并实现以下功能：能产生（得到）并选择各种数字信号（sin、方波、三角波、语音、噪声及其叠加）；具有DFT和DCT变换功能，对各种信号进行变换；设计滤波器实现低通、高通、带通滤波，得到输出信号的频域特性和时间序列。-the realization of a digital signal processing simulation system. Requires interface and achieve the following functions:
Steganalysis-Based-on-dctdwt-space
- 基于SVM分类器的三域特征融合图像隐写分析算法。三域分别是指dct域，dwt域和空域。-A Steganalysis Based on the Fusion of Three-domain Features of Image and SVM (Support Vector Machines) Classifier.the three domain is the dct,the dwt and the space
DCT
- 随着科学技术的发展,图像压缩技术越来越引起人们的关注。为此从众多的图像压缩编码标准中选取了基于DCT变换的JPEG图像压缩编码算法进行研究，并通过对比分析各种软件特性选取了MATLAB进行实验仿-With the development of science and technology, image compression technology is increasingly a cause for concern. To do this, select from a large number
Amnprt-kaur..cmfd-using--DCT-and-SIFT
- Digital images are the most prevalent way to spread a message. So the authenticity of images is very essential. But due to advancement of the technology the editing of images has become very effortless. Copy-move forgery is most basic technique to al