通過一幀 的英文怎麼說
中文拼音 [tōngguòyīzhèng]
通過一幀
英文
stea frame-
Because this algorithm uses the movement information of before frame, it can be implemented by parallel algorithm to improve efficiency. experimental results show the algorithm constringed fast
由於該演算法利用的是前一幀的運動信息,所以該演算法可以通過并行演算法來實現,以便提高演算法效率。The initial vsd process uses two main characters, the average instantaneous energy and the average instantaneous zero crossing rate ( zcr ). to make the first recognition for the start and the end, the emphasis of which is to select the appropriate value of the threshold and the length of frame. in the final vsd process, the author compares several characters and confirms the new recognition character
初步分段過程使用了能量和過零率這兩個主要特徵進行端點檢測,重點是合理選擇兩個重要參數? ?門限和統計幀長度的取值;在最終分段過程中,筆者首先通過比較幾種特徵的識別效果,選擇卡爾曼濾波參數作為再次分段的識別特徵,還提出了一種新的識別特徵? ?周期性緩變特徵,使用這兩個特徵分別在子語音段內進行端點檢測。After about two years " insisting and hard working, this goal set at the beginning has become true. the developed c54x general assembly program for g. 729 speech signal compressing algorithm has passed the tracking with more than 3, 000 unitary standard measuring vectors. g. 729 speech signal compressing compiler using c54x general assembly program has been accomplished real - timely, and undistorted rebuilt speech signals have been obtained
因此本課題選用c54x的通用匯編語言編程實現g . 729語音壓縮編碼演算法,調試並通過了統一標準測試矢量三千多幀,最終在5402開發實驗板上實時實現了g . 729語音壓縮編碼器,獲得未失真的重建語音信號。The bridge can continue push the dvb - c transport stream coming from the receive card to the universal media player to display online. in order to be compatible with the data rate in the bridge, the parser must have these functions : identifying the format of each elementary stream ( es ) ; repacketing the es frames or packets into small samples ; timestamping each sample for decoding and delivery by the arithmetic of getting the pts of an audio frame
音視頻解析器的設計兼容了橋接器對數據推送的速率,在該解析器中通過「解析音視頻基本流」演算法來識別出每一個流的格式、每一幀數據,並對這些數據重新打包成一個個數據sample ,再通過「音頻pts的獲取」演算法給這些sample打上正確的「 directshow 」時間戳,最後在相應的輸出pin上進行發送。A qos - support protocol, m - dcf, and its schedule model are proposed. by providing different contention window for different classes, the higher class frames the higher access probability. the simulation proves that m - dcf has better performance than dcf protocol on system throughput, discard ratio, frame discard ratio of higher classes, average access delay of different classes
提出了為不同等級幀提供不同競爭窗口的改進型dcf : m - dcf協議,並給出了m - dcf的調度模型,通過採用不同的競爭窗口,為不同n西安電子科技大學博士學位論文:無線局域網和ip服務質量關鍵技術的研究的應用提供了不同的接入概率,保證了qos ;模擬結果證明了m一dcf在系統吞吐率、丟包率、高等級業務丟包率、不同等級業務的平均接入時延等方面都優于dcf協議。The algorithm generates three - dimensional terrain model and displays in real time. it uses an efficient and simple method to attain the dependency between sampling points on terrain, and refines the center points in top - down way. it incorporates the dependency of points into their errors so that the cracks inside the terrain block are avoided, at the same time eliminates the cracks at the edges of blocks through adjusting the elevations of those points that cause the cracks
該演算法基於規則格網數據實時生成三維地形模型,並實時顯示;採用了一種簡單而高效的方法來求解采樣點之間的依賴關系;以「從頂向下」方式細分中心頂點;並把頂點依賴關系融合進頂點誤差中,避免了地形塊內部的裂縫,同時通過調整塊邊界點的高程消除了塊邊界處的裂縫;演算法還具有利用幀間相關性,視相關等方面特點。Visual analysis of human motion has been receiving increasing attention from researchers in the fields of image processing and computer vision during the past few years. it has a lot of applications in virtual reality, smart surveillance system, advanced user interface, motion analysis and video compressing, etc. this paper focuses on the technology of human motion tracking based on video, first, we make a summarization of the domestic and overseas status of the research in this field. on the basis of this, we analyse the technical difficulties of human motion tracking. as most of the existing model - based methods of human motion tracking perform not so good in some situation as they need mannual intervention, and also the precision of tracking is not so satisfying during the research of tracking of walking people because of the self - occlusion of legs, this paper proposes an algorithm of automatic detection and tracking of legs of the walking people based on monocular image sequences, in which we analyse the features of walking people, track the five joints of lower limbs, get various parameters, and then re - construct the walking process. the main research achievement is as follows : 1 ) we propose an algorithm of markerless automatic extraction of leg skeleton. first we divide the video into continuous image sequences, after background subtraction, the satisfying human region could be extracted, then we get a single - connected region by converting the rgb image to binary image and median filtering. afterwards, the contour of lower limbs in the frame with a widest boundingbox is detected, using sobel operator, to find the ankle joint of leg behind according to the features and rules of walking, then, the joint of knee of leg behind, hip, ankle of leg in front, knee of leg in front could be got in turn. so, model of leg skeleton is constructed
首先將視頻分解成許多連續的靜態圖像幀,經過背景去除,把感興趣的人體區域提取出來,通過二值化,中值濾波等預處理方法得到只有人體的一個單連通區域,然後用sobel運算元檢測出boundingbox最寬幀中人體下半身的輪廓,根據運動規律及特徵找到後腿踝關節點,結合從boundingbox最窄幀中所獲取的腿長依次得到後腿膝關節,跨部關節,前腿踝關節,前腿膝關節四點,從而構建出腿部骨架模型。 2 )實現了人體步行腿部骨架的跟蹤演算法。在完成對腿部骨架模型的自動初始化之後,本文對跨關節、膝關節及踝關節分別採用運動建模、圓周相交定點演算法、運動預測及預測點周圍搜索rgb相似矩形塊三種方法確定每一幀中其實際坐標,從而重構出腿部骨架的運動過程。The proposed method combines the detection probability and temporal tracking information at each time step, therefore outperforms current frame based detection and traditional tracking methods
通過在每一時刻將人臉檢測信息融入粒子濾波器的時序信息積累和傳播機制中,演算法取得了優于逐幀檢測和傳統跟蹤演算法的性能。In order to describe clearly about the whole flow of conference control we introduce petri network to tell how the control unit works. in the end of this article we discuss some useful techniques to resolve security problem which are also very important in the system
通過rtp rtcp封包解包的設計實現對網路的流量控制,其中實現了漏桶演算法的思想,並給出rtp rtcp組幀的流程;文章還對視頻會議系統所面臨的安全問題進行簡單的分析並概括了一般的實現方法。Then we consider the applications of music structure to audio - based mir and music summarization based on the labeled music structure information. first we extract the pitch class profile ( pcp ) feature vector through the analysis of music representation
首先通過分析音樂的表達方式提取了pcp特徵,這是一種基於幀的特徵,它較好的結合了聲學層的頻率和音樂語義層的十二平均律信息。Step a frame
通過一幀At a cocktail party, we can selectively attend to a single voice and filter out all the other acoustical interferences. how to simulate this perceptual ability remains a great challenge
基於人耳這樣的特性,我們提出了這樣一種方法:將混合后的語音流通過頻率分解和時間幀分解成一個個小的片段。Many network users use tcp / ip protocols that were composed of a series of protocol layers to finish their communication tasks. the user ' s data information is divided into a great many of data blocks. when the data blocks are transported through the layers of the protocols, they are added the controlled information in their headers
網路用戶終端大多使用tcp / ip通信協議完成信息的傳輸任務, tcp / ip協議是層次結構的通信協議,用戶數據信息被劃分成一個個的數據分段,經過各層協議時,添加上各層協議的控制信息,作為數據分段的頭部信息,這個頭部信息說明了各相應層通信的規則,數據分段經各層封裝后最終形成物理數據幀通過物理鏈路送到通信網路上傳輸。In the ibm token - ring network, the number of bridges through which a frame passes on the way to its destination
在ibm的令牌環型網路中,一幀信息在向目的地傳送路徑上所通過的橋接器個數。The frame difference algorithm was used for dealing with the problem of initial background image extracting automatically, and different moving pixels in current image were detected through a subtracting technique
通過一種基於幀間差分的演算法,自動提取初始背景圖像,並使用相減法,檢測出當前圖像中的運動像素。One of the characteristics of gprs service different from real - time voice service is that it requires very low erroneous frame rate. the accuracy of packet data can be guaranteed through the mechanism of retransmission, which, however, leads to longer transmission delay and low payload in spite of busy channels
Gprs業務不同於實時語音的一個特點是它要求有很低的誤幀率,這可以通過重傳機制保證分組數據的正確,但重傳將使傳輸時延大、通道盡管很忙但有效的負荷卻低。In order to simulate the return, a radar coherent video echo model is used to simulate target echo, clutter and noise separately. then the three parts which are in the same range cell are added together to form a matrix to represent return in one radar coherent processing interval ( cpi ). this matrix is called a frame of range doppler data
為了較為全面地對雷達回波進行模擬,採用相干視頻回波模型分別模擬雷達目標回波、雜波和噪聲,通過在距離單元內疊加的方法,將一個雷達相干處理周期內的回波數據用一幀距離多普勒平面數據表示。However, most of the current wireless networks still work in low bandwidths, and mobile devices still suffer from weak computational power, short battery lifetime and limited display capability. therefore, this thesis deals with developing a very low bit - rate bi - level video coding technique, which can be used in video communications almost anywhere, anytime on any device as follows : ( 1 ) convert true color video sequences from ccd and video card to grayscale ones, ( 2 ) detect static region of successive frames by the sum of absolute differences ( sad ) and update current frame using static region of previous frame, to decrease flicker. ( 3 ) threshold the images to bi - level video sequences using ridler ' s iterative selection
為此,本論文在傳統h . 26x和mpeg - x等視頻編解碼技術的基礎上提出了一種新的基於輪廓的視頻編解碼方案,步驟如下: ( 1 )先把從ccd攝像頭捕捉到的視頻幀序列轉換成灰度幀序列, ( 2 )在灰度幀序列的基礎上通過sad演算法找出相鄰幀的靜態區域,用前一幀的靜態區域更新當前幀的相應區域,這樣可以降低畫面閃爍, ( 3 )然後用灰度直方圖迭代所產生的閾值二值化圖像,生成基於輪廓的視頻幀序列, ( 4 )最後運用基於上下文的算術編碼技術對由第三步生成的二值化視頻幀序列進行算術編碼。2. 768 * 576 pixels and 24 bit real time dynamic and static pictures can be captured by a special medical video card. the number and quality of the pictures captured can be controlled by the frame frequency, size of the documents enacted. owing to the image real time compress technology, real time record can be long time, documents transcribed can be re - screened randomly, operation database can be created automatically, normative operation reports can be printed freely
2 、通過一塊專有的圖像採集卡可以捕獲768 * 576象素解析度的真彩實時動態和靜態圖像;可通過設定捕捉頻率、幀數、文件大小來控制所捕獲圖像的數量和質量;由於採用運動圖像實時壓縮技術,可以長時間實時錄像,同時能任意回放錄制的文件;自動生成手術數據庫,能隨意列印規范的手術報告單。Some kinds of magnetic scale code methods is compared and analyzed. a frame superimposed scale coding is presented. from the further studies on the frame superimposed scale code methods, an encoding method is found out
通過對幀重疊編碼方法的進一步研究,提出了幀重疊編碼方法的反碼優先編碼排列過程,並給出了編碼排列過程實例。分享友人