motion vector 中文意思是什麼
motion vector
解釋
運動矢量-
This has brought heavy computation burden when it is applied to compress the hdtv high definition television content. based on the original ffsbm fast full search blocking matching, this paper proposes an improved ffsbm algorithm to adaptively reduce the complexity of motion estimation according to the actual motion intensity. the main idea of the proposed algorithm is to use the statistical distribution of mvd motion vector difference
為了提高壓縮效率， avs採取了可變塊大小的運動補償技術，一個宏塊可以被進一步劃分為四種塊大小， 16x16 ， 16x8 ， 8x16 ， 8x8 ，這樣一個16x16的宏塊中總共會被劃分成9個不同的分區，每個分區獨自地進行運動估計，這使得運動估計成為了avs編碼器中復雜度最高的一部分。 -
This algorithm increases the speed and accuracy of the motion vector search in intra - frame / inter - frame model selection, i proposed an adaptive selection method of intra - frame / inter - frame prediction model, based on tmn recommendation. in this paper, chapter one introduces the needs for low bit - rate video compression and relevant standards. chapter two first introduces briefly some common image compression methods, then emphases on the algorithms used in h263 + encoding and decoding
本論文第一章概述了當今世界對甚低碼率視頻圖象壓縮編碼的需求以及相關的國際標準；第二章簡要介紹一些具體的圖象壓縮編碼方法，對于在h . 26x編解碼器中運用到的圖象壓縮演算法給予了重點介紹；第三章詳細探討了h . 26x系列標準，對于重點和難點部分作了詳細的闡述；第四章是具體的編解碼器設計以及核心演算法描述；第五章是h . 26x編解碼器在局域網視頻傳輸中的一個具體運用。 -
We propose an algorithm, which integrate the shift invariance of redundant discrete wavelet transformation ( rdwt ) and the flexibility of multi - resolution motion estimation, to overcome the shift variance of dwt and get the precise motion vector. under the different code parameter, we take the proposed algorithm compared to several present algorithms, and experiment results have shown that proposed algorithm could leave less energy in the residual frames, get more precise motion vector and better reconstructed frames
文章最後在不同的編碼參數下，將所提演算法與兩種傳統小波域運動估計演算法作比較，根據實驗所得數據分析，發現所提演算法在性能上要優于另外幾種演算法，具體體現在運動估計后所得殘差幀能量更小，重構幀客觀與主觀質量更高。 -
In chapter 4, we discuss the method of vos abstraction based on temporal segmentation in detail. first we put forward affine modal, which is a kind of 3 - d motion modal of rigid body, compensate global motion vector based on this modal, and get the changed detection mask ( cdm ). then we introduce the conception of optical flow field, compute the local
首先構建三維剛體運動的模型，提出一種計算模型的全局運動矢量的方法，並進行全局運動補償、變化檢測模板提取和連通域標記等步驟，然後引入光流場的概念，並介紹其計算原理和方法，用horn - schunck迭代法計算圖像中各點的局部運動矢量，並據此對變化檢測模板的結果進一步提取，獲得時域上分割的信息。 -
To reduce the runtime of the software, fast algorithms are adopted in the motion estimation and dct modules. moreover, this paper introduces early detection of zero motion vector and all zero coefficients to optimize the coding process
為了提高軟體運行速度，對運算時間較長的運動估計和dct模塊採用快速演算法，並對編碼過程進行優化，採用了零運動矢量和零系數提前判決的方法，節省了很大一部分塊匹配搜索和dct運算時間。 -
An outstanding method of motion estimate can get an accurate motion vector
一種優秀的運動估計技術應該能得到精確的運動矢量。 -
This thesis studies technologies of block - based motion estimation and compensation in mpeq and gives a method, which is based on motion vector statistics, to calculate motion vector of whole object
本文研究了mpeg中基於塊的運動估值與補償技術，提出一種基於運動矢量統計的運動分析方法。 -
It can exactly get the very motion vector. because of its large computational complexity, people tried many other methods
運動向量估計在編碼過程中占運算量很大的部分，比重是50 %以上。 -
This paper research the mpeg - 4 standard first and realize the encoder and decoder of video of mpeg - 4. then the paper emphasize two key techniques in mpeg - 4 encoder : motion estimation and sprite encode. motion estimation takes the largest time in all parts of mpeg - 4 encoder. the paper concluded some typical me techniques, research and realize the mvfast arithmetic whice is recommend by iso, then improved mvfast by considering the temporal candidate motion vector and adjustal thresholds
然後，本論文重點研究了mpeg - 4編碼過程中兩項關鍵技術：運動估計和背景圖像編碼。運動估計是編碼過程中最重要，耗時最長的部分。本論文總結了常見的運動估計演算法，深入研究並實現了iso推薦的運動估計優化演算法mvfast ，在此基礎上，引入了時間參考運動向量和可調的門限參考值，對mvfast演算法進行了改進。 -
A fast non - iterative global motion estimation ( gme ) algorithm is disclosed for estimating the perspective transform global motion parameters from the motion vectors ( mv ) obtained from the block matching process that includes grouping a plurality of motion vectors in the input video stream into a predetermined number of groups of motion vectors, calculating a set of global motion parameters from each of the predetermined groups of the motion vector, and processing the set of global motion parameters generated from the calculation to obtain a final estimation
本發明系關於一種快速非反覆式全域移動估測方法，以由區塊匹配程序中所獲得的移動向量去估測一透視轉換全域移動參數，其包含一分組步驟，將該輸入影像資料流中的多個移動向量區分成具有預定數目的移動向量之群組?一計算步驟，系依據每一群組中之移動向量，求取該等群組之全域移動向量參數值?一處理步驟，系處理計算步驟中所計算出的每一群組之群組全域移動向量參數值，以獲得一最後之全域移動向量。 -
In the part 2 of advanced audio video coding standard avs - p2, many efficient coding tools are adopted in motion compensation, such as new motion vector prediction, symmetric matching, quarter precision interpolation, etc. however, these new features enormously increase the computational complexity and the memory bandwidth requirement, which make motion compensation a difficult component in the implementation of the avs hdtv decoder
在avs - p2中傳統的運動補償技術被進一步改進以獲得更好的編碼性能。這些新的特性包括：預測塊大小可變化1616到88基於矢量三角形的新型mv預測多參考幀最多2幀或4場直接或對稱模式匹配不限制的mv和1 4精度像素插值等。 -
In tracking section, we still adopt the snake to converge on the object contour by improving the energy functions, in the tracking frame, initial points are acquired by calculating the average inter - frame motion vector of the block, because all snaxels have approximately the same motion vector as the moving object is proposed to be rigid and have no salient deformation
跟蹤部分：根據剛體運動的特點（運動區域具有一致性和不發生較大的形變）求出運動目標的平均位移矢量，與在分割部分求出的目標的輪廓點的位置相加，作為下一幀跟蹤的初始輪廓點，結合改進的snake能量函數使其更精確地收斂到運動目標輪廓上，達到準確跟蹤的效果。 -
Finding out the most resembled part as the matching part in the neighbor by using the present part, pointing at it by motion vector, then finding out the different part between the matching part and the present part, at last rebuilding the compressed frame by the matching part and the different part, this process is called motion compensation
用當前部分在相鄰幀中尋找最相似的部分作為匹配部分，用運動矢量指向匹配部分，再用匹配部分與當前部分之間的差形成誤差部分，以匹配部分和誤差部分來重建壓縮圖像的過程叫運動補償。 -
Detection of motion vector of cardiac myocyte using adaptive genetic algorithm
自適應遺傳演算法用於心肌細胞運動矢量檢測 -
The motion vector of adjacent macroblocks ( spatial or temporal ) is used as the initial searching vector of the current macroblock, to search a multistage in an involute - like scanning
在大多數情況下，圖像中運動的變化在圖像內和圖像間往往是連續的。 -
On condition that quality of picture restructured is insured, with a view to the motion estimation algorithms that costs the longest coding time, the method of prejudgment of zero motion vector is adopted in this paper, which makes about 50 percent motion estimation computation left out, so the encoding speed of encoder can be further increased
為了解決質量和實時性的矛盾，本方案在保證質量的前提下，針對運算時間較長的運動估計模塊，給出了零運動矢量提前判斷的方法，從而省去了約50的匹配塊搜索運算，提高了h -
The standard is designed to give a new technical solution for a broad range of applications, such as very low bit rate conversational services and entertainment quality broadcast, interactive video - on - demand services etc. for the enhancement of the coding efficiencies, the new standard adopts new tools as following : multiple reference pictures, variable block - size with seven block sizes in motion prediction, quarter - pixel accuracy for motion vector, short word - length integer transform, context - adaptive entropy coding and loop filter deblocking
H . 264 / avc標準支持從低帶寬、高誤碼率的無線移動視頻通信到高帶寬、低誤碼率的有線視頻廣播等多種應用，因此，日益受到業界的關注。為了實現更高的編碼效率， h . 264 / avc標準採用了很多新的編碼技術，如多參考幀預測、多尺寸編碼塊模式、 1 / 4像素精度運動矢量、整數變換量化、基於內容的熵編碼、新型幀內預測、去除方塊效應的濾波器等。 -
Firstly, based on the c6711 dsp hardware characteristics, h. 263 was chosen as the core video compression framework. after seven advanced options of h. 263 was tested, we analyzed the test results and used three options which are unlimited motion vector, advanced motion prediction and deblock filter as the scheme of the low bit - rate monitor video encoding
首先，通過對目前的低碼率視頻編碼技術的分析，結合c6711硬體特點，我們選擇了h . 263視頻編碼標準作為監控視頻編碼框架，並且通過對h . 263標準的七個高級編碼選項的測試和分析，選取了其中無限制運動矢量、高級預測和去塊濾波等三個編碼選項作為監控視頻編碼的主要方案。 -
77 motion vector : a two - dimensional vector used for inter prediction that provides an offset from the coordinates in the decoded picture to the coordinates in a reference picture
運動矢量：一個二維矢量，用在幀間預測中，提供解碼圖象（中塊）相對于參考圖象（中參考塊）的坐標的偏移量。 -
Then based on the idea of predictive motion vector, using of spatial correlation of adjacent block and global minimum points probability distribution characteristic, predictive diamond searching ( pds ) and its advanced mode : adaptive pds ( apds ) are introduced. finally the algorithm of pds and apds and its simulation results comparing with conventional me algorithm are given
然後基於預測性運動矢量的概念，利用相鄰塊運動矢量的相關性和全局極值點概率分佈特性，提出了預測性菱形搜索演算法和它的改進演算法：自適應預測性菱形搜索法，設計出具體演算法，並給出了與傳統快速塊匹配法比較的計算機模擬結果。
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