Description: 用matlab做的三维视频压缩编码算法，希望对大家有帮助-Using matlab to do three-dimensional video compression coding algorithm, in the hope that everyone has to help Platform: |
Size: 8192 |
Author:andandan |
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Description: dct and idct for image.matlab实现信息序列的嵌入和提取-dct and idct for image.matlab realize embedded information and extract sequence Platform: |
Size: 2048 |
Author:wubaishan |
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Description: 实现3D-SPIHT的压缩功能，使SPIHT的图像压缩应用在3维图像和video中-The realization of 3D-SPIHT compression functions SPIHT image compression used in 3-D images and video in Platform: |
Size: 8192 |
Author:朱里 |
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Description: JPEG的压缩解压程序
把输入视频压缩成结构体形式，效果比较好-JPEG compression decompression procedures to enter into the structure of video compression form, the effect is better Platform: |
Size: 4096 |
Author:saint |
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Description: 本文主要完成了对H.264视频压缩算法的编码器的各个关键环节的分析，
以及对H.264视频压缩算法的软件实现的研究，还有对H.264视频压缩算法的压
缩性能的测试和分析。
-In this paper, completed the H.264 video compression algorithm of the encoder of the various key aspects of analysis, as well as the H.264 video compression algorithm of the software realize the study, as well as H.264 video compression algorithm for compression performance testing and analysis. Platform: |
Size: 5195776 |
Author:南茜 |
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Description: 为了减小运动估计算法的计算复杂度及提高视频压缩编码的效率,提出了一种新的快速、有效的块匹配运
动估计算法.-In order to reduce the motion estimation algorithm of the computational complexity and improve the efficiency of video compression coding, a new fast and effective block-matching motion estimation algorithm. Platform: |
Size: 586752 |
Author:孙翔 |
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Description: 一个mpg压缩的水印提取程序,考虑到了几种压缩格式,并基于此提出DCT频率域上的水印提取.对学习视频水印的人有help-Mpg compressed a watermark extraction procedure, taking into account several types of compression formats, and based on this proposed DCT frequency domain watermark extraction. For learning video watermarking help people Platform: |
Size: 1024 |
Author:zzy |
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Description: 实现视频压缩功能，是最近比较新颖的压缩标准下的视频的图象压缩-Video compression is a relatively new design is the recent video compression standard for image compression Platform: |
Size: 70656 |
Author:yang |
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Description: 三维DCT变换是在空间信息上增加了一维的时间维度，对视频系列直接进行压缩-Three-dimensional DCT transform information in the space are added to one-dimensional time dimensions of the video series for direct compression Platform: |
Size: 14336 |
Author:farmer |
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Description: 基于块匹配的帧间运动估计，对相邻帧间背景运动计算运动矢量 ，使用了多种搜索算法对运动块进行搜索和匹配。-Block Matching Algorithms for Motion Estimation，This MATLAB source code is a review of the block matching algorithms used for motion estimation in video compression. It implements and compares 7 different types of block matching algorithms that range from the very basic Exhaustive Search to the recent fast adaptive algorithms like Adaptive Rood Pattern Search. Platform: |
Size: 4603904 |
Author:付亚峰 |
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Description: 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，并由此分析直流和低频系数的重要性。
-Known brightness of two different image data block is as follows: (1) Principles of analysis of DCT, the DCT method, program and calculate the corresponding DCT coefficient, analysis of distribution coefficients. (2) quantitative analysis based on visual characteristics of the distribution of long-form features step-by-step to complete the DCT coefficient quantization. (3) the use of Z-scan output data to achieve statistical encoding, the formation of Video stream. (4) the use of the reconstructed image brightness IDCT data to calculate the SAD size, analysis of the causes of errors and the use of DCT for the principle of data compression. () (5), respectively, a factor of 1,3,6 using the upper left corner of the reconstruction of images, calculating the corresponding SAD, and the resulting analysis of DC and the importance of low-frequency coefficients. Platform: |
Size: 1024 |
Author:张元 |
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Description: 数字视频监控系统代表了监控行业的未来发展方向，蕴藏着巨大的商机和
经济效益，成为目前信息产业中颇受关注的数字化产品。特别是近年来，随着
技术的进步和社会经济的不断发展，客观上对监控系统的准确性、有效性和方
便性提出了更高要求。主要体现在：需要实施视频监控的范围更加广阔，达到
点多面广；要求监控系统与管理信息系统、网络系统结合，实现对大量视频数
据的压缩存储、传输和自动处理，从而达到资源共享，为各级管理人员和决策
者提供方便、快捷、有效的服务。可见基于 DSP 和小波压缩技术的远程音频视
频监控具有现实意义和广阔前景。-Digital Video Surveillance System to monitor represents the future direction of the industry, there are enormous business opportunities and
Economic benefits of the information industry has become quite concerned about the digital product. In recent years, with the
Technological progress and socio-economic development, the objective of monitoring system on the accuracy, effectiveness and side
Will be put forward higher requirements. Mainly embodied in: the need for the implementation of video surveillance broader scope, reaching
Points wide require monitoring system and management information systems, network systems, to achieve a number of the large number of video
According to the compressed storage, transmission and automatic processing, so as to achieve resource sharing, for all levels of management and decision-making
Provide convenient, speedy and efficient service. Can be seen based on the DSP and wavelet compression technology as the long-range audio
Frequency of Platform: |
Size: 588800 |
Author:耿耿 |
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Description: This paper (and accompanying MATLAB source code) is a review of the block matching algorithms used for motion estimation in video compression. It implements and compares 7 different types of block matching algorithms that range from the very basic Exhaustive Search to the recent fast adaptive algorithms like Adaptive Rood Pattern Search. The algorithms that are evaluated in this paper are widely accepted by the video compressing community and have been used in implementing various standards, ranging from MPEG1 / H.261 to MPEG4 / H.263. The paper also presents a very brief introduction to the entire flow of video compression.
by Aroh Barjatya
original found here http://www.mathworks.com/matlabcentral/fileexchange/8761-This paper (and accompanying MATLAB source code) is a review of the block matching algorithms used for motion estimation in video compression. It implements and compares 7 different types of block matching algorithms that range from the very basic Exhaustive Search to the recent fast adaptive algorithms like Adaptive Rood Pattern Search. The algorithms that are evaluated in this paper are widely accepted by the video compressing community and have been used in implementing various standards, ranging from MPEG1/H.261 to MPEG4/H.263. The paper also presents a very brief introduction to the entire flow of video compression.
by Aroh Barjatya
original found here http://www.mathworks.com/matlabcentral/fileexchange/8761
Platform: |
Size: 121856 |
Author:hbx |
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Description: 运动估计是视频编码的关键技术，其最基本的原理是利用相邻帧间的时间
相关性，通过预测来减少时间冗余度。在实际编码中，为了节省码率，并不传
输每一帧的全部数据，而是利用运动估计求出每一帧与其预测参考帧之间的差
值。运动估计越准确，差值的分布越趋近与零，差值块的能量越小，经过变换、
量化和熵编码后所产生的码流的比特位率也越少。因此，运动估计搜索的准确
程度直接影响到了编码的压缩性能。
-Motion estimation is the key to video encoding technology, its basic principle is the use of the adjacent time frame relevant, through the forecast period to reduce redundancy. In the actual code, in order to save bit rate and does not transfer all the data of each frame, but the use of motion estimation for each frame obtained with the prediction of the difference between the reference frame. Motion estimation more accurate, more closer to the margin and the distribution of zero, the smaller the energy difference between blocks, after transform, quantization and entropy coding of the code produced by the bit stream bit rate is less. Therefore, the motion estimation search accuracy of the direct impact on the performance of the compression coding. Platform: |
Size: 17408 |
Author:罗鹏 |
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Description: 在matlab环境下实现视频水印的嵌入，要求视频未被压缩处理过。-Matlab environment in the realization of embedded video watermark, the requirements of video compression is not treated. Platform: |
Size: 75776 |
Author:尉玉林 |
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Description: JPEG是当今比较流行的编码标准，能很好的提高视频的压缩比，具有很好的实时性压缩性。-MPEG is more popular in today' s coding standards, the improvement of good video compression ratio, an excellent real-time compression. Platform: |
Size: 63488 |
Author:张峰 |
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Description: 这个程序实现了MPEG2的视频压缩，用于Internet上视频流的处理（IP流还没有实现），程序的注释相对比较少，所以可能比较难理解些。下载后请先看说明。-This program implements MPEG2 video compression, video streaming for the Internet, the processing (IP flow has not yet achieved), program notes relatively small, it may be more difficult to understand something. Please read download instructions. Platform: |
Size: 2913280 |
Author:李亓 |
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Description: Video Compression using Content-Based Motion Compensation
---------------------------------------------------------
This demo Requires MATLAB (and the Image Processing Toolbox)
Tested on MATLAB 7.0 (R14).
Run one of the following three MATLAB scripts:
* DemoEncodeCrowd (encodes some frames from the "crowd" sequence)
* DemoDecodeCrowd (decodes the previously encoded frames)
* DemoDecode (generic decoder)
Note that the encoding script can be modified so that the user can specify the values of a number of input variables.
This code is VERY SLOW. A lot could be done to speed it up!
In MS-Windows, use the YUV file player to view YUV files.
-----------------------------------------
Based on the PhD Research of Marc Servais
www.ee.surrey.ac.uk/CVSSP/VMRG/hdtv/
-Video Compression using Content-Based Motion Compensation
---------------------------------------------------------
This demo Requires MATLAB (and the Image Processing Toolbox)
Tested on MATLAB 7.0 (R14).
Run one of the following three MATLAB scripts:
* DemoEncodeCrowd (encodes some frames from the "crowd" sequence)
* DemoDecodeCrowd (decodes the previously encoded frames)
* DemoDecode (generic decoder)
Note that the encoding script can be modified so that the user can specify the values of a number of input variables.
This code is VERY SLOW. A lot could be done to speed it up!
In MS-Windows, use the YUV file player to view YUV files.
-----------------------------------------
Based on the PhD Research of Marc Servais
www.ee.surrey.ac.uk/CVSSP/VMRG/hdtv/
-----------------------------------------
Platform: |
Size: 19207168 |
Author:mohammad665 |
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Search - Video compression in matlab