Description: 介绍了JPEG图像压缩算法,并在MATLAB 数学分析工具环境下从实验角度出发,
较为直观地探讨了DCT 在JPEG图像压缩中的应用。仿真实验表明,用MATLAB 来实现离散余弦
变换的图像压缩,具有方法简单、速度快、误差小的优点,大大提高了图像压缩的效率和精度。
李秀敏1 , 万里青1 , 周拥军2
(1. 河南科技大学电子信息工程学院,河南洛阳 471003 2. 中航一集团洛阳电光设备研究所,河南洛阳 471009)-introduced the JPEG image compression algorithm, MATLAB and mathematical analysis tool environment from experimental perspective, more directly on the DCT in JPEG image compression applications. Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy. LI Xiu-1, Green 1 Wanli, Zhou Yongjun 2 (1. Henan University of Science and Technology of Electronics and Information Engineering College, Luoyang, Henan 471003 2. A350 Luoyang Electro-Optic Equipment Institute, Luoyang, Henan 471009) Platform: |
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Author:adnsid |
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Description: JPEG 标准的最新进展是 1996 年开始制定， 2001 年正式成为国际标准的 JPEG 2000 。与 JPEG 相比， JPEG 2000 作了大幅改进，其中最重要的是用离散小波变换（ DWT ）替代了 JPEG 标准中的离散余弦变换。在文件大小相同的情况下， JPEG 2000 压缩的图像比 JPEG 质量更高，精度损失更小。作为一个新标准， JPEG 2000 暂时还没有得到广泛的应用，不过包括数码相机制造商在内的许多企业都对其应用前景表示乐观， JPEG 2000 在图像压缩领域里大显身手的那一天应该不会特别遥远。 -JPEG standard on the latest progress of the development started in 1996 and in 2001 became the international standard JPEG 2000. Compared with JPEG, JPEG 2000 made substantial improvements, the most important of which is discrete wavelet transform (DWT) instead of the JPEG standard discrete cosine transform. The file size under the same circumstances, JPEG 2000 compressed images of higher quality than JPEG, precision small loss. As a new standard, JPEG 2000 has not yet been widely applied, including digital camera manufacturers in many enterprises have their applications are optimistic about the prospects of the JPEG 2000 image compression areas prone to the day should not particularly remote. Platform: |
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Author:ldwe |
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Description: 介绍了JPEG图像压缩算法,并在MATLAB 数学分析工具环境下从实验角度出发,
较为直观地探讨了DCT 在JPEG图像压缩中的应用。仿真实验表明,用MATLAB 来实现离散余弦
变换的图像压缩,具有方法简单、速度快、误差小的优点,大大提高了图像压缩的效率和精度。
李秀敏1 , 万里青1 , 周拥军2
(1. 河南科技大学电子信息工程学院,河南洛阳 471003 2. 中航一集团洛阳电光设备研究所,河南洛阳 471009)-introduced the JPEG image compression algorithm, MATLAB and mathematical analysis tool environment from experimental perspective, more directly on the DCT in JPEG image compression applications. Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy. LI Xiu-1, Green 1 Wanli, Zhou Yongjun 2 (1. Henan University of Science and Technology of Electronics and Information Engineering College, Luoyang, Henan 471003 2. A350 Luoyang Electro-Optic Equipment Institute, Luoyang, Henan 471009) Platform: |
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Author:adnsid |
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Description: Wavelets have widely been used in many signal and image processing applications. In this paper, a new
serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet
transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline
architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is
done using a tree of carry save adders to ensure the high speed processing required for many applications.
The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis
reveals that the proposed architecture, implemented using current VLSI technologies, can process a
video stream in real time.-Wavelets have been widely used in many sign al and image processing applications. In this p aper. a new serial-parallel architecture for wavele t-based image compression is introduced. It is based on a 4-tap wavelet transform. which is realized using some FIFO memory module 's implementing a pixel-level pipeline archite cture to compress and decompress images. The're al filter calculation over 4 blocks window is done using a tree of carry save adders to ensure t he high speed processing required for many appl ications. The details of implementing both com pressor decompressor and sub-systems are give n. The primarily analysis reveals that the prop osed architecture, VLSI implemented using current technologies, can process a video stream in real time. Platform: |
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Author:sdfafaf |
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Description: 本作品是基于Windows平台使用Visual C++工具开发的多文档应用程序。本课题组成员在对DICOM3.0医学影像存储与传输的国际标准和JPEG 2000静态图像压缩标准学习的基础上，实现了基于JPEG 2000标准的医学图像高效压缩功能，压缩比可在1～300间可调；同时该软件兼容JPEG压缩，压缩比可在1～100间可调。该软件操作简单、界面友好，是PACS系统的一个重要组成部分，对于缓解传输带宽和存储容量的压力具有一定意义。-of the book is based on the Windows platform using Visual C development tool for the multi-document applications. The members of the task group on DICOM3.0 medical imaging storage and transmission of international standards and JPEG 2000 Static state image compression standard on the basis of studies, Based on the realization of the JPEG 2000 standard medical image compression function efficiently, compression ratio can be an adjustable-300; The software also compatible JPEG compression, compression ratio in a ~ 100 adjustable. The software is simple, friendly interface and PACS system is an important component of the For ease transmission bandwidth and storage capacity of the pressure with a certain sense. Platform: |
Size: 920576 |
Author:袁耀辉 |
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Description: 本程序基于小波变换的三级分解及重构相关程序，有利于对小波变换在图像压缩中的应用的学习与了解。-procedures based on the wavelet transform three decomposition and reconstruction associated procedures, it is beneficial for wavelet transform in image compression applications of learning and understanding. Platform: |
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Author:姚永辉 |
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Description: 本文是关于小波分析在图像处理压缩方面的应用，是word格式的，文档中有详细的程序和文字分析说明，对学习的人很有帮助。
在小波方法的实际应用中，可以利用尺度方程系数构造得到小波和小波包变换算法即金字塔算法。利用张量积方法可以从一维多分辨分析直接得到二维的多分辨分析，从而方便地构造得到二维小波和小波包以及相应的分解和合成算法。在图象处理和二维数据分析研究中广泛使用的就是二维形式的小波和小波包算法。-This article is about the treatment of wavelet analysis in image compression applications, is the word format, document in detail the procedures and text analysis, and learn helpful. Wavelet method in practical applications, can use the scale factor equation has been constructed wavelet and wavelet packet transform algorithm that is, the pyramid algorithm. Use of tensor product can be from one-dimensional analysis directly from the two-dimensional multiresolution analysis, thus conveniently be constructed of two-dimensional wavelet and wavelet packet and the corresponding decomposition and synthesis algorithms. In two-dimensional image processing and data analysis study is the widely used two-dimensional form of wavelet and wavelet packet algorithm. Platform: |
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Author:阳关 |
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Description: 小波变换在图像处理中的应用，包括不同类型图像间的转换，二维小波对图像进行小波去噪，二维小波进行图像压缩，利用小波分析对二维含噪图像去噪，二维小波利用中值滤波对图像进行平滑，小波分析进行图像增强，小波分析对两个不同的图像进行融合-Wavelet transform in image processing applications, including different types of image inter-conversion, two-dimensional wavelet image wavelet denoising, two-dimensional wavelet image compression, the use of wavelet analysis of two-dimensional noisy image denoising, the use of two-dimensional wavelet median filter for image smoothing, wavelet analysis for image enhancement, wavelet analysis of two different image fusion Platform: |
Size: 3072 |
Author:fuhuaizheng |
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Description: 本系统是一个基于VC++的小波算法，包含两个变换，一维小波变换和二维小波变换，对图像处理和视频压缩方面有很广泛的应用。-Based on this system is a VC++ Wavelet algorithm, consists of two transformations, one-dimensional wavelet transform and two-dimensional wavelet transform of image processing and video compression have a very wide range of applications. Platform: |
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Author:wangjie |
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Description: 本书主要论述了智能图像处理技术,系统介绍了智能图像处理技术的有代表性的思想、算法与应用，跟踪了图像处理技术的发展前沿。全书共分为15章，重点讨论了图像边缘检测、图像分割、图像特征分析、图像配准、图像融合、图像分类、图像识别、基于内容的图像检索与图像数字水印。此外，为了内容的完整性，本书还介绍了图像预处理技术，如图像采集、图像变换、图像增强、图像恢复、图像编码与压缩-This book focuses on intelligent image processing technologies, systems introduce intelligent image processing technologies have thought representation, algorithms and applications of image processing technology to track the development of cutting-edge. Book is divided into 15 chapters, focused on image edge detection, image segmentation, image feature analysis, image registration, image fusion, image classification, image recognition, content-based image retrieval and image digital watermarking. In addition, for the integrity of the content, the book also describes image pre-processing techniques, such as image acquisition, image transform, image enhancement, image restoration, image coding and compression Platform: |
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Author:朱郴良 |
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Description: 小波变换是一种快速发展和比较流行的信号分析方法, 其在图像处理中有非常重要的应用, 包括图像压缩, 图像去噪, 图像融合, 图像分解, 图像增强等。小波分析是傅立叶分析思想方法的发展与延拓。除了连续小波
(CWT)、离散小波(DWT), 还有小波包avelet Packet)和多维小波。本文主要介绍小波变换的发展及其在图像处理、的应用-Wavelet transform is a fast-growing and more popular method of signal analysis, image processing in a very important applications, including image compression, image denoising, image fusion, image decomposition, image enhancement and so on. Wavelet analysis is a Fourier analysis method development and extension. Apart from the continuous wavelet (CWT), discrete wavelet (DWT), there are wavelet packet (Wavelet Packet) and multi-dimensional wavelet. This paper describes the development of wavelet transform and its application in image processing Platform: |
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Author:yang |
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Description: an introduction to wavelets
-Wavelets are mathematical functions that cut up data into di® erent frequency components,
and then study each component with a resolution matched to its scale. They have advantages
over traditional Fourier methods in analyzing physical situations where the signal contains
discontinuities and sharp spikes. Wavelets were developed independently in the ¯ elds of mathematics,
quantum physics, electrical engineering, and seismic geology. Interchanges between these ¯ elds
during the last ten years have led to many new wavelet applications such as image compression,
turbulence, human vision, radar, and earthquake prediction. This paper introduces wavelets to the
interested technical person outside of the digital signal processing ¯ eld. I describe the history of
wavelets beginning with Fourier, compare wavelet transforms with Fourier transforms, state properties
and other special aspects of wavelets, and ¯ nish with some interesting applications such as
image comp Platform: |
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Author:same |
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Description: 人脸视频图像编码是近年来图像编码领域里的一个研究热点问题,它在通信、互联网等方面有着广泛的应用前景。人脸图像编码的研究包含很多子问题,主要的三个方面为:精确的人脸目标定位算法,实时的人脸目标跟踪算法和高效的人脸图像编码方法。本文的主要研究工作在于: 1) 提出帧间差分和背景差分相结合的人脸目标定位算法,在人脸特征选择上,主要使用形状特征,通过椭圆拟合来得到人脸的位置。 2) 采用基于Kalman滤波的运动预测方法对人脸的区域变化进行预测,以此缩小目标可能存在的区域(ROI).-Facial video image coding image compression in recent years a hot research topic in the field of the problem, it is in the communication, the Internet have a wide range of applications. Coding of face images contain many sub-problems, the main three are: accurate target location algorithm for face, real-time face tracking algorithm and efficient facial image coding method. This major research work are: 1) of the frame difference and background difference goal of combining face localization algorithm, feature selection in the human face, the main use of shape features, by ellipse fitting to get the location of the face. 2) Kalman filtering based motion prediction method changes the face of the region predicted to narrow the possible target area (ROI). Platform: |
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Author:周参 |
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Description: 本书全面系统介绍了小波分析的基本理论和最新研究成果，重点介绍小波分析的应用成果，并通过软件实现来检验应用效果。全书分为三篇：第一篇是小波理论，包含8章内容，小波分析的发展历史及文献综述、准备知识、多分辨分析与共轭滤波器、连续小波变换、最佳小波基的构造及算法、二维母小波的构造、框架与样条小波理论、时间----频率分析；第二篇是小波应用，包含12章内容，详细介绍了小波分析在图象压缩、流体力学、工业CT、故障诊断、语音分割、数学物理、地球物理勘探、医学细胞识别、线性系统、神经网络等方面的应用；第三篇是小波软件，将第一篇和第二篇的重要算法用C语言实现，且全部在微机上调试通过，读者可直接应用或稍加修改即见成效。-This book systematically introduces the basic theory of wavelet analysis and the latest research results, focusing on the application of wavelet analysis results and applications through the software to test results. The book is divided into three: first is the wavelet theory, contains 8 chapters, the history of development of wavelet analysis and literature review, preparation of knowledge, multi-resolution analysis of the conjugate filter, continuous wavelet transform, the best wavelet algorithm for the construction and two-dimensional structure of the mother wavelet, frame and spline wavelet theory, time frequency analysis---- second is the wavelet applications, contains 12 chapters, detailing the wavelet analysis in image compression, fluid mechanics, industrial CT , fault diagnosis, speech segmentation, mathematical physics, geophysical exploration, medical cell recognition, linear systems, neural networks and other applications third is the wavelet software, the importance of t Platform: |
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Author:辉 |
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Description: 本书介绍了各种数字图像处理的算法及编程实现技术。全书由13章和一个附录组成。主要内容包括:位图基础、图像的显示、图像的几何变换、图像灰度变换、图像的平滑处理、图像锐化处理及边缘检测、图像分割及测量、图像的形态处理学、图像的变换域处理及应用、图像的合成、24位彩色图像的处理、图像的小波变换和JPIG图像的压缩编码。
本书介绍了近90种图像处理的技术,这些技术与编程实例相结合,提供了VC++编程步骤,图像处理的编程代码,并且处理前的图像可与处理之后的图像对照比较。实例程序的框架结构简单,代码简洁,使初学VC++者很快就能编写图像处理的程序代码。
本书可作为高等院校计算机工程、信息工程、生物医学工程、智能机器人学、工业自动化、模式识别及相关学科的教师、研究生、本科生、专科生的教材或参考书,亦可供有关工程技术人员参考。-This book presents a variety of digital image processing algorithms and programming techniques. Book is composed of 13 chapters and an appendix. The main contents include: the bitmap based image display, image geometric transformation, image gray level transformation, image smoothing, image sharpening and edge detection, image segmentation and measurement, image processing morphological study, the image of the transform domain processing and applications, image synthesis, 24-bit color image processing, the wavelet transform and JPIG image compression.
This book describes nearly 90 kinds of image processing technologies, and programming examples of these technologies combine to provide a VC++ programming steps, image processing, programming code, and handle pre-processed image with the image comparisons. Simple example program framework, the code simple, so beginners can quickly VC++ by writing image processing code.
This book can serve as institutions of higher learning c Platform: |
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Author:微筱柒 |
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Description: Image segmentation systems have the potential to dramatically improve the performance of Digital image processing. Segmentation procedures partition an image into its constituent parts or objects. In general, segmentation is one of the most difficult tasks in digital image processing. Detection of salient image regions is useful for applications like image segmentation, adaptive compression, and region-based image retrieval. This problem can be tackled by mapping the pixels into various feature spaces, which are subjected to various grouping algorithms It present a novel method to determine salient regions in images using low-level features of luminance and color. The method is fast, easy to implement and generates high quality saliency maps of the same size and resolution as the input image. Platform: |
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Author:shailesh kochra |
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Description: Applications of Computer graphics, especially digital photographs and other complex color images,can produce very large file sizes. Problems of storage space and the necessity to fast transmit image data across networks and over the Internet, have thus, led to the growth of a range of image compression techniques, to minimize the physical size of files. Majority of the compression approaches are not dependent of particular file formats, several formats support a number of different compression kinds. They are an important segment of digital image formation, utilization and storage. But, a number of aspects such as efficiency, compression ratio etc., must be taken into account when using compression algorithms Platform: |
Size: 539648 |
Author:suhail |
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Description: Applications of Computer graphics, especially digital photographs and other complex color images,can produce very large file sizes. Problems of storage space and the necessity to fast transmit image data across networks and over the Internet, have thus, led to the growth of a range of image compression techniques, to minimize the physical size of files. Majority of the compression approaches are not dependent of particular file formats, several formats support a number of different compression kinds. They are an important segment of digital image formation, utilization and storage. But, a number of aspects such as efficiency, compression ratio etc., must be taken into account when using compression algorithms Platform: |
Size: 455680 |
Author:suhail |
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Search - applications of image compression