Description: 一种图像认证的代码，是别人的论文里实现的一种算法，提供大家作参考研究-an image authentication code, is the thesis of others to achieve an algorithm, we provide reference for research Platform: |
Size: 311296 |
Author:潇潇 |
Hits:
Description: 彩色图像的篡改检测及自恢复算法赵春晖，孙建军，朱海峰(哈尔滨工程大学信息与通信工程学院，黑龙江哈尔滨150001)摘要：数字水印是图像认证的有效手段之一．利用小波变换提出一种计算简单的彩色图像水印算法，将一个图像的主要内容嵌入该图像自身之中，用均值量化的方法在亮度信号中嵌入水印，实现篡改检测和定位篡改区域；用多余的色度空间嵌入亮度信号和色度信号，用于恢复被篡改的图像内容．该算法可以获取较高的峰值信噪比，具有很好的鲁棒性．实验结果表明，该算法对删除、替换等恶意图像篡改具有良好的检测、定位和自修复能力．-color image tamper detection and self-recovery algorithm Zhao Chunhui, Sun Jianjun, Zhu Haifeng (Harbin Engineering University, Information and Communication Engineering Institute, Harbin, Heilongjiang 150001) Abstract : digital watermark image authentication is one of the effective means. Using wavelet transform A simple calculation of the color image watermarking algorithm, an image of the main elements embedded in the image itself, and use of quantitative methods mean the luminance signal embedded watermark, achieve tamper detection and localization tampering with the region; use of surplus space embedded color luminance signals and chrominance signals, for the restoration of tampering with the image content. The algorithm can generate a higher signal-to-noise ratio of the peak value, h Platform: |
Size: 237568 |
Author:ghostsx |
Hits:
Description: 于内容的图像认证技术是一种新颖的图像信息安全技术，用来验证数字图像内容的完整性与真实
性。本文介绍了基于内容的图像认证技术的分类、发展历史和研究现状，并针对其现有算法的缺陷，对未来的发
展趋势和应用进行了展望。
-content in the image authentication technology is a novel image information security technology, used to verify digital image content authenticity and integrity. This paper introduces the content-based image authentication techniques classification, history and current status of research and against its existing algorithm, the future trends and applications of Outlook. Platform: |
Size: 758784 |
Author:cici |
Hits:
Description: A novel texture-based Automatic Fingerprint Authentication System (AFAS) is proposed. A fingerprint image is preprocessed to enhance the image by Short Time Fourier Transform (STFT) analysis. Then, three sets of invariant moment features, as a kind of texture features, are extracted from three different sizes of Region of Interest (ROI) areas based on the reference point from the enhanced fingerprint image. Each set of invariant moments contain seven invariant moments. Fingerprint verification is realized by Euclidean distance between the two corresponding features of the test fingerprint image and template fingerprint image in the database. -A novel texture-based Automatic Fingerprint Authentication System (AFAS) is proposed. A fingerprint image is preprocessed to enhance the image by Short Time Fourier Transform (STFT) analysis. Then, three sets of invariant moment features, as a kind of texture features, are extracted from three different sizes of Region of Interest (ROI) areas based on the reference point from the enhanced fingerprint image. Each set of invariant moments contain seven invariant moments. Fingerprint verification is realized by Euclidean distance between the two corresponding features of the test fingerprint image and template fingerprint image in the database. Platform: |
Size: 421888 |
Author:ruan |
Hits:
Description: matlab处理指纹图像，由于指纹的唯一性、可靠性和稳定性，指纹已成为身份识别和鉴定的一个重
要标志，并被公认为“物证之首”。指纹识别作为一种生物识别技术，历来受到人们的广泛关注和重视，是未来个人身份认证的重要组成部分。-Fingerprint image processing matlab，Because the uniqueness of fingerprints, reliability and stability,fingerprint identification has become an important symbol of appraisal,and is recognized as the "first" material.The fingerprint identified as a kind of biometrics,has received extensive attention of,the individual identity authentication is the important component.Based on the MATLAB software applications for tools,for fingerprint image preprocessing and feature extraction technology research.Including pretreatment part involves by different methods of fingerprint image segmentation to extract valid area,with the improvement of OPTA thinning algorithm for thinning,
Platform: |
Size: 427008 |
Author:赖晓燕 |
Hits:
Description: A novel texture-based Automatic Fingerprint Authentication System (AFAS) is proposed. A fingerprint image is preprocessed to enhance the image by Short Time Fourier Transform (STFT) analysis. Then, three sets of invariant moment features, as a kind of texture features, are extracted from three different sizes of Region of Interest (ROI) areas based on the reference point from the enhanced fingerprint image. Each set of invariant moments contain seven invariant moments. Fingerprint verification is realized by Euclidean distance between the two corresponding features of the test fingerprint image and template fingerprint image in the database Platform: |
Size: 276480 |
Author:joyce |
Hits:
Description: This matlab code is for paper "Biometric Image Integrity Authentication Based on SVD and Fragile Watermarking" Platform: |
Size: 1024 |
Author:Sathvika |
Hits:
Description: 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 and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document.
A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
Platform: |
Size: 98304 |
Author:omar |
Hits:
Description: 四种聚类算法源代码及示例代码,本程序的最终目的是形成一套标准的用于聚类、可扩展的工具。包括的内容有1. 聚类算法：Kmeans和Kmedoid算法、FCMclust, GKclust, GGclust算法 2. 评估分类原型：程序可以在二维图像上绘制出聚类的结果 3. 验证：程序给每一个算法提供验证机制，每个聚类算法会统计Partition Coefficient (PC), Classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII)几种衡量指标。-Four kinds of clustering algorithms source code and sample code, the ultimate goal of this program is to form a set of standards for clustering, scalable tools. Including the contents of a. Clustering algorithm: Kmeans and Kmedoid algorithms, FCMclust, GKclust, GGclust algorithm 2. Assessment classified prototypes: programs can be plotted in two-dimensional image, the results of clustering 3. Verify: Program to provide an algorithm to each authentication mechanism, each clustering algorithm will calculate Partition Coefficient (PC), Classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni' s Index (XB), Dunn' s Index (DI) and Alternative Dunn Index (DII) of several metrics. Platform: |
Size: 2134016 |
Author:conroy cheung |
Hits:
Description: One of Biometrics fields is face recognition & face expression recognition ...
1- In face recognition .. we need to design authentication program by training a neural network ,there are two source codes..one of them is based on Discrete Wavelet Transform with Perceptron Neural Network.. and the other based on Discrete Cosine Transform with Perceptron Neural Network ...
2- In face expression recognition .. we defined the condition of the person (nature,happiness,disgust or anger)
this source code is based on Principle component analysis(PCA) ..
* we need to now about digital image processing
,neural network and PCA-One of Biometrics fields is face recognition & face expression recognition ...
1- In face recognition .. we need to design authentication program by training a neural network ,there are two source codes..one of them is based on Discrete Wavelet Transform with Perceptron Neural Network.. and the other based on Discrete Cosine Transform with Perceptron Neural Network ...
2- In face expression recognition .. we defined the condition of the person (nature,happiness,disgust or anger)
this source code is based on Principle component analysis(PCA) ..
* we need to now about digital image processing
,neural network and PCA... Platform: |
Size: 11905024 |
Author:mahmoud |
Hits:
Description: 图像认证技术，源码最新下载自美国名校The University of Texas at Austin的Brian L. Evans教授的实验室网站
-Matlab programs for image authentication downloaded from Professor Brian L. Evans in University of Texas at Austin in USA Platform: |
Size: 281600 |
Author:yhnc |
Hits:
Description: This a code for art authentication in matlab.Works fine have tried and tested. Involves image classifucation, processing segmentation etc.-This is a code for art authentication in matlab.Works fine have tried and tested. Involves image classifucation, processing segmentation etc. Platform: |
Size: 46080 |
Author:Nagaraj |
Hits:
Description: 基于掌纹识别的在线身份验证 识别算法本科毕设，经典的灰度共生矩阵纹理计算方法，可以广泛的应用于数据预测及数据分析,基于chebyshev的水声信号分析，这是一个好用的频偏估计算法的matlab仿真程序,实现了图像的加水印，去噪，加噪声等功能。-Palmprint recognition based on online authentication recognition algorithm undergraduate complete set, classic GLCM texture calculation method can be widely used in data analysis and predictive data based chebyshev underwater acoustic signal analysis, this is a useful frequency partial estimation algorithm matlab simulation program to achieve a watermarked image, de-noising, plus noise and other functions. Platform: |
Size: 4096 |
Author:liyang |
Hits:
Description: The image watermarking technology is a vital facet
about multimedia authentication and copyright protection to
improve its reliability and security. This paper proposes an
embedment of encrypted watermark in a JPEG image to address
the issues of proprietorship Platform: |
Size: 10240 |
Author:saranya
|
Hits:
Search - image authentication matlab