Description: 基于H264的可分级平台代码-2008.8更新
- direct 8x8 inference for inter-layer motion prediction in B slices (see JVT-AB010)
- removal of copyright headers from source files and adding an extra file with copyright information Platform: |
Size: 1893124 |
Author:贺人龙 |
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Description: MPEG编码基础,使用比较浅显的语言讲述MPEG基本原理,包括前后向预测,运动估计,MDCT,哈弗曼编码-MPEG code base, the use of relatively simple language about the basic principles of MPEG, including before and after the prediction, motion estimation, MDCT,哈弗曼coding Platform: |
Size: 2038784 |
Author:杜景波 |
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Description: 文章比较了H．264和AVS两个标准在运动补偿中运动矢量预测算法的差别， 提出了一种实现H．264 中
主档次(main pmille)下的第4级别(1evel 4)和AVS中的基准档次面向高清应用时运动矢量预测复用的硬件结构。
提出了一种新颖的缓存管理更新机制．极限情况下用于运动矢量的片上缓存大小减少了75％ 。用FPGA验证结果
表明资源占用情况是单独实现AVS的2．3倍，是单独同时实现两个标准的70％。能实现对1080i 30Hz高清图像实
时解码。-Article compares the H. 264 and AVS standards in the two motion compensation algorithm in the motion vector prediction difference, a realization of H. 264 in the main level (main pmille) under section 4 level (1evel 4) and AVS in the benchmark grade of application-oriented high-definition motion vector prediction reuse the hardware structure. A novel cache management update mechanism. Limit used for motion vectors on-chip cache size reduction of 75. The results show that the use of FPGA resources to verify the occupancy of a separate AVS realize 2.3 times, both individually and at the same time realize the standard 70. Can realize high-definition images to 1080i 30Hz real-time decoding. Platform: |
Size: 275456 |
Author:宋恋 |
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Description: 运动估计的几种方法，包括线性预测法、混合高斯法、特征值法和相邻帧差法等-Several motion estimation methods, including linear prediction method, mixed-Gaussian law, Eigenvalue and adjacent frames, such as poor law Platform: |
Size: 3072 |
Author:郑锦 |
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Description: VC++基础上的MPEG1运动估计及补偿预测算法实现，这里面既包括了P图像的预测算法又包含了B图像的双向预测算法-VC++ Based on motion estimation and compensation MPEG1 prediction algorithm to achieve, there is both a P image prediction algorithm B also contains images of bi-directional prediction algorithm Platform: |
Size: 102400 |
Author:王晓川 |
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Description: 基于仿射变换的运动场估计,首先使用EBMA确定基于块的运动场，然后使用加权的LSE求仿射变换参数。给出基于仿射变换参数的预测帧以及相应的估计参数，并与基于块运动估计的运动场预测结果进行比较-Based on the estimated affine transformation of the stadium, the first to use block-based EBMA determine playgrounds, and then use the weighted LSE for affine transformation parameters. Affine transformation parameters are given based on the prediction frames and the corresponding estimated parameters, and block-based motion estimation of the prediction results were compared Stadium Platform: |
Size: 1024 |
Author:王娟 |
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Description: 软件。H.264视频解码后用该软件载入解码后的重建帧H.264_rec.yuv后可以看宏块采用的帧内，帧间预测模式，运动适量，残差等参数。-Software. H.264 video decoder after loading the software decoder frame reconstruction can be seen H.264_rec.yuv after the adoption of Intra macroblock, inter-frame prediction mode, motion amount, residual and other parameters. Platform: |
Size: 1562624 |
Author:cc |
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Description: For estimation and prediction of random 2 dimensional motion using Kalman filter in MATLAB Platform: |
Size: 1024 |
Author:hellz lair |
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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VC++6.0下运行的MPEG-4编码，包括入口函数，视频对象平面编码函数，运动信息编码，运动估计和预测补偿函数，运动向量和预测误差计算的函数，纹理编码，运动向量图象编码函数，帧内纹理编码函数，形状纹理编码函数，DC/AC系数预测函数，供大家参考-In VC++6.0 run under the MPEG-4 encoding, such as import function, video object plane coding function, sports information coding, motion estimation and prediction of the compensation function, motion vector and prediction error calculation function, texture coding, motion vector images encoding function, intra-coding function of texture, shape, texture coding function, DC/AC coefficient prediction function for your reference Platform: |
Size: 149504 |
Author:simon |
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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: |
Size: 1024 |
Author:周参 |
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Description: 本文提出一种基于H．264低比特率视频流的半脆弱盲水印方法，通过在H．264特有的的帧内预
测和运动向量预测中分别嵌入鲁棒水印和脆弱水印，达到版权保护和内容完整性认证的双重目的．通过在嵌入强
度和预测模式选择的拉格朗日乘子中引入H．264量化因子，增强了水印对重量化编码的抵抗力，取得更好的率
失真平衡，减小水印嵌入对视频流比特率的影响．该算法可以实现水印的快速嵌入提取，满足视频实时处理的要
求，实验结果证明了该算法的有效性．-A novel semi—fragile blind watermark algorithm based on H．264 low bit—rate video stream was pro—
posed in this paper，copyright protection and content authentication Can be achieved jointly by embedding the robust waterraark
an d fragile watermark spectively during the process of interior prediction an d motion vector prediction which are
characteristic for H．264 standard．Through introducing the quan tization factor of H．264 in the embedding and prediction
mod e choice，the proposed scheme Can strengthen the watermarking resistance to video recoding and strike a good rate—
distortion balan ce for the waterm ark of lower bit—rate video st／ ea／n．which relieve bit—rates lossness from the waterm arking
embedding．Experimental results also demonstrate that this scheme iS very computational efi cient during watermark—
ing embedding an d extraction． Platform: |
Size: 384000 |
Author:阿国 |
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Description: 灰色系统理论中的灰色预测模型，多元灰色预测模型的构建，可用于系统建模，控制系统，模型设计，预测控制，视觉目标跟踪中的运动预测等应用。-Grey prediction model in Grey System Theory can be applied in system modeling, control system, model design, prediction control and motion estimation in visual object tracking, etc. Platform: |
Size: 355328 |
Author:朱亮亮 |
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Description: Predict a new frame from a previous frame and only code the
prediction error
• Prediction error will be coded using an image coding method (e.g.,
DCT-based as in JPEG)
• Prediction errors have smaller energy than the original pixel values
and can be coded with fewer bits
• Those regions that cannot be predicted well will be coded directly
using DCT-based method
• Use motion-compensated prediction to account for object motion
• Work on each macroblock (MB) (16x16 pixels) independently f-Predict a new frame from a previous frame and only code the
prediction error
• Prediction error will be coded using an image coding method (e.g.,
DCT-based as in JPEG)
• Prediction errors have smaller energy than the original pixel values
and can be coded with fewer bits
• Those regions that cannot be predicted well will be coded directly
using DCT-based method
• Use motion-compensated prediction to account for object motion
• Work on each macroblock (MB) (16x16 pixels) independently f Platform: |
Size: 3072 |
Author:krishna |
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Description: 用于视频压缩中的运动估计，由锚定帧输出预测帧、预测误差及PSNR与运行时间值-For video compression motion estimation, the prediction frame, the prediction error and the PSNR and run time value output by the anchor frame Platform: |
Size: 14909440 |
Author:杨江峰 |
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Description: 卡尔曼滤波追踪，对目标运动状态进行预测
，从而实现目标的持续跟踪-Kalman filter tracking, the state of the target motion prediction
To achieve the objectives of the continuous tracking Platform: |
Size: 2048 |
Author:huahua |
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Search - motion prediction