Description: in this paper,wo propose an extension of the zerotree-based space-frequency quantization algorithm by adding a wedgelet symbol to its tree-pruning optimization.-in this paper. wo propose an extension of the zeotree-based s pace-frequency quantization algorithm by add ing a wedgelet symbol to its tree-pruning optim ization. Platform: |
Size: 269815 |
Author:金金 |
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Description: in this paper,wo propose an extension of the zerotree-based space-frequency quantization algorithm by adding a wedgelet symbol to its tree-pruning optimization.-in this paper. wo propose an extension of the zeotree-based s pace-frequency quantization algorithm by add ing a wedgelet symbol to its tree-pruning optim ization. Platform: |
Size: 269312 |
Author:金金 |
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Description: 1、拓网IP签名图系统使用C#.NET(2.0)开发 2、使用拓网独创的C#水印类，高质量输出图片，使图片底图失真率大大降低。 3、使用拓网IP数据库，收录全世界IP段数达到310300条(拓网7月10日最新IP库)。 4、自定义背景图，文字颜色，背景色，文件大小等参数。 5、快速高效，由于C#无需类似ASP的字符转换,所以本系统比目前的ASP的IP签名图系统快上N倍,占用资源少N倍.-1, expand the network system uses IP Signed Figure C#. NET (2.0) the development of 2, the use of Extension Network original C# Watermark type, high-quality output image, so that image distortion rate base greatly reduced. 3, use extension IP network database to reach around the world IP Paragraph 310300 (Extension Network July 10 the latest IP database). 4, a custom background image, text color, background color, parameters such as file size. 5, fast and efficient, as the C# No similar characters ASP conversion, so the system ASP than the current system of IP Signed map N times faster, less resource-N times. Platform: |
Size: 4056064 |
Author:李康保 |
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Description: 使用拓网独创的C#水印类，高质量输出图片，使图片底图失真率大大降低。使用拓网IP数据库，收录全世界IP段数达到310300条(拓网7月10日最新IP库)。-Extension network using original C# Watermark type, high-quality output image, so that image distortion rate base greatly reduced. Extension network using IP database IP paragraph worldwide reached 310,300 (Extension Network July 10 the latest IP database). Platform: |
Size: 4062208 |
Author:drugmcd |
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Description: 小波分析具有很强的数学背景，因此学好和应用好小波有一定的难度。本文研究的则是小波变换在数字图像处理中的应用，文中介绍了数字图像处理的基本概念和小波变换的基本理论及其在图像处理中的应用技术—Mallat算法，并应用Mallat算法来实现图像小波变换，以及对小波变换后的图像进行嵌入式小波零树系数编码的理论研究。本文在最后对应用Visual C++编程实现其变换进行分析和总结。-The main topic article discuss is wavelet transform the application of image processing. In the article introduces the basic conception of data image processing and the basic theory of wavelet transform. Based on the image wavelet transform theory, the realize of the image wavelet transform technology——analysis on Mallat algorithm, and basis on Mallat algorithm that use the software of VC++ realize of the image wavelet transform. Mallat algorithm is using the wavelet coefficients and the filter of signal processing, so it greatly simplified the computing of wavelet coefficients algorithm. EZW code is the structure which is a simple and effective image coding algorithm with which an encoder can terminate the encoding at any point thereby allowing a target rate or distortion metric to be met exactly. Platform: |
Size: 96256 |
Author:尹晨 |
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Description: 小波分析具有很强的数学背景，因此学好和应用好小波有一定的难度。本文研究的则是小波变换在数字图像处理中的应用，文中介绍了数字图像处理的基本概念和小波变换的基本理论及其在图像处理中的应用技术—Mallat算法，并应用Mallat算法来实现图像小波变换，以及对小波变换后的图像进行嵌入式小波零树系数编码的理论研究。本文在最后对应用Visual C++编程实现其变换进行分析和总结-Mallat algorithm that use the software of VC++ realize of the image wavelet transform. Mallat algorithm is using the wavelet coefficients and the filter of signal processing, so it greatly simplified the computing of wavelet coefficients algorithm. EZW code is the structure which is a simple and effective image coding algorithm with which an encoder can terminate the encoding at any point thereby allowing a target rate or distortion metric to be met exactly. Platform: |
Size: 9216 |
Author:尹晨 |
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Description: QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.-As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate. Platform: |
Size: 1319936 |
Author:ljj |
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Description: 随着多媒体技术的不断运用，图像压缩要求更高的性能和新的特征。为了满足静止图像在特殊领域编码的需求，JPEG2000作为一个新的标准处于不断的发展中。它不仅希望提供优于现行标准的失真率和个人图像压缩性能，而且还可以提供一些现行标准不能有效地实现甚至在很多情况下完全无法实现的功能和特性。这种新的标准更加注重图像的可伸缩表述。所以就可以在任意给定的分辨率级别上来提供一个低质量的图像恢复，或者在要求的分辨率和信噪比的情况下提取图像的部分区域。
-With the constant use of multimedia technology, image compression demand higher performance and new features. In order to meet the still images in a particular area code needs, JPEG2000 as a new standard in the process of development. It not only wants to offer better than the current standard of distortion of the rate and the personal image compression performance, and can also provide some current standards can t effectively even in many cases completely unable to realize functions and characteristics. The new standard pay more attention to the image, scalable expression. So we can in any given level of resolution up to provide a low quality image restoration, or in the resolution of the requirements and signal-to-noise ratio of portions of the image extraction. Platform: |
Size: 1417216 |
Author:yan |
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Description: 只是用于镜头视角<pi/2的摄像头采集的图像的畸变校正。算法仿真《基于畸变率的图像几何校正》-Just for camera Angle < PI/2 camera acquisition of image distortion correction.The algorithm simulation "image geometric correction based on aberration rate" Platform: |
Size: 1024 |
Author:zxj |
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Description: Simulation of transmission of SPIHT encoded images over unreliable channels. Requires the MATLAB Communications Toolbox. Scripts for measuring the channel error rate, RCPC code characteristics and Rate-Distortion (R-D) curve of the SPIHT compression for the input image and selected channel characteristics. Platform: |
Size: 49152 |
Author:oudjani |
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Search - image rate distortion