Description: The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard for
the coding (compression) of natural video images. The new standard [1] will be known as H.264 and
also MPEG-4 Part 10, “Advanced Video Coding”. This document describes the transform and
quantization processes defined, or implied, by the standard. Platform: |
Size: 62461 |
Author:woyun |
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Description: 用SSE2汇报语言实现的H.264视频编码标准中的DCT变换。-using SSE2 reporting language of H.264 video coding standard of DCT. Platform: |
Size: 24576 |
Author:王宏志 |
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Description: The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard for
the coding (compression) of natural video images. The new standard [1] will be known as H.264 and
also MPEG-4 Part 10, “Advanced Video Coding”. This document describes the transform and
quantization processes defined, or implied, by the standard.-The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard forthe coding (compression) of natural video images. The new standard [1] will be known as H.264 andalso MPEG-4 Part 10, Platform: |
Size: 62464 |
Author:woyun |
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Description: 本文首先介绍了视频处理的一般原理，主要介绍了采样，变换编码，预测编码，量化，熵编码等。然后介绍了最新的视频标准MPEG主要介绍了系统体系结构，系统解码器模型，缓冲区模型规范，对象描述框架，以及场景描述和视频部分。接着介绍了DSP，介绍了它的特点，主要应用，CPU结构，-This paper first introduces the general principles of video processing, the main introduction of the sampling, transform coding, predictive coding, quantization, entropy coding. And then introduce the latest MPEG video standard introduces the system architecture, the system decoder model, the buffer model specification, the object description framework, as well as parts of scene description and video. Then introduce the DSP, the characteristics of its introduction, the main application, CPU structure, Platform: |
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Author:宋恋 |
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Description: 英文原版。介绍了数字视频处理的基本概念，视频采样，压缩，编码和协议标准等。值得收藏-With the help of hundreds of high quality technical illustrations, this book presents the following topics:
* Basic concepts of digitization, sampling, quantization, gamma, and filtering
* Principles of color science as applied to image capture and display
* Scanning and coding of SDTV and HDTV
* Video color coding: luma, chroma (4:2:2 component video, 4fSC composite video)
* Analog NTSC and PAL
* Studio systems and interfaces
* Compression technology, including M-JPEG and MPEG-2
* Broadcast standards and consumer video equipment Platform: |
Size: 3288064 |
Author:ilotusr |
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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: |
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Author:张元 |
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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: 嵌入式视频编码器量化算法优化.pdf:通过构造合适的量化矩阵，实现了快速量化，解决了通用嵌入式处理器实现视频压缩标准量化算法存在效率差、量化器结构复杂等问题；同时，对不同的视频编码块类型，采用不同的量化策略，避免了统一量化引起的图像质量下降。 -By constructing a suitable quantization matrix to achieve rapid quantification, solving general-purpose embedded processor to achieve video compression standard deviation to quantify the efficiency of algorithms exist to quantify the complexity of device structure, and other problems the same time, different video encoding block type, using different quantization strategy to avoid a uniform quantification of image quality. Platform: |
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Author:康云 |
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Description: 实现对视频图像的游程编码和解码。过程包括：二维DCT变换、量化及游程编码。
一般来讲对于视频的I帧进行恢复，其信噪比可达到38DB以上。-Implementation of the video image encoding and decoding run-length. Process includes: two-dimensional DCT transform, quantization and run-length encoding. In general, I frame for the video resume, the signal to noise ratio can reach more than 38DB. Platform: |
Size: 7168 |
Author:zrs |
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Description: Discrete Cosine Transform (DCT) and quantization are two critical parts in image encoding. By discussing how coefficients retaining and quantization step selection influence the quality of the reconstructed image, this homework helps to understand the procedure of encoding of an image in the international video standards (JPEG, H.261, ...). Platform: |
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Author:pgorangel |
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Description: Purpose of image processing
Processing of image data for storage, display & transmission
Improvement of pictorial information for Human Perception
Improvement of pictorial information for Machine Perception
Typical application areas
Television DIP brightness, contrast, hue & noise adjustment
Satellite DIP Remote sensing, Climate, Geology, Land/Sea resource
Medical DIP Ultra Sound, MRIPECT Scans, XRays
Robot Control Automatic inspection, Unmanned operations-Autonomous Vehicle (Mars Rover)
Visual Communications: Video-coding transmission conferencing, Tele-conferencingshopping
-Purpose of image processing
Processing of image data for storage, display & transmission
Improvement of pictorial information for Human Perception
Improvement of pictorial information for Machine Perception
Typical application areas
Television DIP brightness, contrast, hue & noise adjustment
Satellite DIP Remote sensing, Climate, Geology, Land/Sea resource
Medical DIP Ultra Sound, MRIPECT Scans, XRays
Robot Control Automatic inspection, Unmanned operations-Autonomous Vehicle (Mars Rover)
Visual Communications: Video-coding transmission conferencing, Tele-conferencingshopping
Platform: |
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Author:Suresh |
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Description: 基于矢量量化的视频图像压缩编码方法研究 基于矢量量化的视频图像压缩编码方法研究-Video image based on vector quantization compression method based on vector quantization compression method of video image Platform: |
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Author:韩磊 |
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Description: 介绍和分析了H. 264 采用的新编码关键技术及算法, 诸如运动补偿, 帧内预测, 变换和量化, 新的熵编码等, 最后阐述视频编解码技术的研究方向及前景.-Description and analysis of the H. 264 coding using the new key technology and algorithms, such as motion compensation, intra prediction, transform and quantization, entropy coding of the new, the last set of video codec technology research and future prospects. Platform: |
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Author:ywj |
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Description: 该程序实现了分布式视频编码的编码端，包括视频帧的分类、分块、DCT变换、量化、编码-The program implements a distributed video coding encoding side, including the classification of video frames, block, DCT transform, quantization, coding Platform: |
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Author:yuehong |
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Description:
在
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视频压缩编码标准中像素压缩模块的优化
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实验结果表明该方法的优化取得了良好效果
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Experimental results show that the method has achieved good results in the optimization of
! Platform: |
Size: 240640 |
Author:K |
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Description: 采用自组织映射算法（SOM）设计码书，达到全局最优，同时采用组合码字和图像块动态划分等优化算法，最终实现的码书性能比LBG算法有很大提高。这是中科大视频技术的final project，附有最终版的report和presention。-Using self-organizing map algorithm (SOM) designed codebook, the global optimum, while using a combination code word and image blocks delineation dynamic optimization algorithm, and ultimately the codebook performance than the LBG algorithm has greatly improved. This is the USTC video technology final project, with the final version of the report and the presention. Platform: |
Size: 2068480 |
Author:刘星宇 |
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Description: One of the major drawbacks of the block-based DCT compression methods is that they may result in visible artifacts at block boundaries due to coarse quantization of the coefficients. -Simulation results show that the proposed algorithm significantly reduces the blocking artifacts of still and video images as judged by both objective and subjective measures. Platform: |
Size: 348160 |
Author:huyuan |
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Description: 该图像压缩算法参考MG.Jordon博士发布的开源代码，作者对部分内容进行了优化，包括了帧内编码、帧间编码，DCT变换编码、自适应量化等。-The image compression algorithm reference Dr. MG.Jordon released the open source code, the author of some of the contents of the optimization, including the intra coding, inter frame coding, DCT ransform coding, adaptive quantization, etc. Platform: |
Size: 2048 |
Author:鬲随甲 |
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Search - quantization of video