实现基于运动矢量预测的弱小多目标检测与跟踪算法。
This paper address an algorithm of detection and tracking dim small multi-targets based on motion vector estimation.
帧间预测是利用前面的帧的信息来猜测块的内容。有两个主要组件：参考帧和运动矢量。
Inter prediction is used to guess the content of a block by referring to past frames. There are two primary components to inter prediction: reference frames and motion vectors.
该算法首先采用了线性预测块匹配搜索算法来估计内插帧中每一个象素的运动矢量；
Firstly a motion vector is searched for each pixel in the interpolated frame using the block-matching search method of linear prediction.
详细设计了帧间解码IP软核，包括运动矢量生成模块、预测处理模块和插值模块。
Designed the inter-frame decoding IP soft-core, including the motion vector generation module, prediction processing modules and interpolation modules.
在基于搜索起点预测和梯度式菱形搜索方法的基础上，提出了一种运动矢量场自适应搜索算法(MVFSAS)。
Based on prediction of searching starting-point and gradient diamond-shaped searching technique, the paper proposes a motion vector field self-adaptive searching algorithm (MVFSAS).
该算法通过预测运动矢量较快地搜索到匹配块，减少了搜索次数，提高了搜索效果。
This algorithm improves search performance and reduces search steps compared with Diamond Search by prediction motion vector.
预测通常与边界数据有关，例如用于运动补偿的运动矢量。
Prediction usually involves side data, such as a signal telling the decoder a motion vector to use for said motion compensation.
运动矢量的预测是视频编码技术中的一个重要组成部分，它直接关系到运动估计的精度和码率大小。
Motion Vector prediction forms a key part of video coding technique in that it directly affects the bitrate and performance of motion estimation.
本文在分析低码率压缩码流运动矢量场以及误差曲面性质的基础上，提出一种基于时空预测的快速运动估值方法。
In this paper, based on the analysis of the characteristics of error surface and motion vector field, we propose a fast search strategy for motion estimation is proposed.
然后建立时域上关于搜索块与参考块之间运动矢量夹角的概率模型，对于帧间预测宏块通过聂曼一皮尔迅准则进行运动判决。
For Inter-MB, a temporally statistical modal with regard to vector angle was established and the moving object was detected by using the neyman-pearson criteria.
当基于预测运动矢量的匹配误差介于两sad阈值之间时，用小窗口搜索代替运动估计。
When the matching error based on the prediction of the motion vector is between two SAD thresholds, a search restricted in a small window is used to replace the original motion estimation.
将上述三个预测运动矢量中的中值作为当前块的预测运动矢量。
The median of the said three predicted motion vectors is as predicted motion vector of current block.
本发明可以获得更准确的预测运动矢量，而且能压缩运动矢量码率，获得性能增益。
The invention has the advantages of capability of acquiring more accurate forecasting motion vectors, capability of compressing code rate of motion vectors, and obtaining of performance gain.
在编码模式期间，接收数据块流并为每个宏块产生(12)至少一个运动矢量和至少一个运动补偿预测值。
During an encoding mode, a stream of data blocks is received and at least one motion vector and one motion compensation prediction value for each macro-block are generated.
在编码模式期间，接收数据块流并为每个宏块产生(12)至少一个运动矢量和至少一个运动补偿预测值。
During an encoding mode, a stream of data blocks is received and at least one motion vector and one motion compensation prediction value for each macro-block are generated.
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