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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
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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
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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 aut
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research on authentication watermarking technology. Here a watermarking scheme for color image authentication is proposed, which operates in the wavelet domain.
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用于JPEG2000图像认证的半脆弱性数字水印算法,一种新的算法-JPEG2000 image authentication for the semi-fragile watermarking algorithm, a new algorithm
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脆弱性数字水印能为多媒体内容完整性认证和篡改检测提供有效的解决方案。该文对用于图像认证的脆弱性数字水印技术的研究
现状、一般原理、基本特征、典型算法进行了综述-The vulnerability of digital watermark for the integrity of multimedia content authentication and tamper detection to provide an effective solution. The image authentic
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基于DCT压缩前后不变量,编写的抗JPEG压缩的数字图像认证水印算法,具有良好的抵抗压缩、剪切、篡改等性能的水印仿真程序-Around the DCT-based compression is not variable, the preparation of the anti-JPEG compression algorithm for digital image authentication watermark with good resistance to compression, shea
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YIK Image Authentication System using watermarking
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以数字验证图片为对象进行图像的分析与字符提取的方法研究,实现对验证码图片中字符的提取与识别。-Digital authentication image for the object image extraction method of character analysis and research, achieve code characters in the picture extraction and recognition.
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脆弱及半脆弱水印论文10篇,包括用于图像认证的水印,文本水印,音频水印的论文-Weak and semi-fragile watermarking papers 10, including those for image authentication watermark, text watermarking, audio watermarking papers
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通过手部图像认证身份,采用了决策融合的方法,准确率很好-Image authentication by hand, using a decision fusion method, the accuracy was very good
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基于FPS200指纹采集系统的设计与实现:文章采用新型固体指纹传感芯片FPS200设计出完整的指纹采集系统。该系统具有结构简单、采集速率快、图像质量高等特点,为现今的活体指纹采集提出高效的解决方案。通过对芯片参数的调整,实验表明该系统能够采集到清晰、高质量的指纹图像,为身份认证提供优良的图像来源。-Fingerprint acquisition system based on FPS200 Design and Implementation: This paper fingerprint sen
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影像處理,專用來處理一些相關的影像演算法驗證-Image processing, dedicated to deal with some of the relevant image authentication algorithm
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A watermarking paper for image authentication using HVS, only for research use
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介绍用于生物认证(生物识别)的图像识别理论和算法。-Biometric Image Discrimination Technologies addresses highly relevant issues to many fundamental concerns of both researchers and practitioners of biometric image discrimination (BID) in biometric applications. This book des
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提出一种基于图像认证的半脆弱数字水印算法。该算法具有较好的自适应性,采用改进的低通滤波器,根据人眼的分辨能力设定
梯度阈值。实验结果证明,该算法对常规图像处理操作具有较强的鲁棒性,能够抵御JPEG顶级有损压缩,同时对于恶意篡改攻击(擦除、扭曲、挤压、光照等操作)表现出脆弱性,可检测出篡改的痕迹和类型。 -A semi-fragile watermark algorithm for image authentication is proposed, which has adaptabilit
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采用 Fourier -Mellin 算法和相位相关算法求取干涉图像的旋转角度和缩放及平移
参数,并通过多帧未校正的图像和校正后的图像分别拼接成大面积地域图像来验证算法。-Using Fourier-Mellin algorithm and related algorithms strike phase rotation angle and the interference image zoom and pan parameters, and are not corrected by the
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Image Secret Sharing and Hiding with Authentication
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Steganography and authentication in image sharing without parity bits
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收集了10多篇验证码的文章和代码,着重处理字符变形,平移,旋转,和粘连问题-Collected more than 10 article verification code and code, handling of character deformation, translation, rotation, and the adhesion problem
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