video frame rate 中文意思是什麼

video frame rate 解釋
視頻幀率
  • video : n. 電視；視頻；影像。adj. 電視（用）的，視頻的，錄像的。
  • frame : n 1 機構；組織；系統。2 結構，框架，構架，骨架，骨骼。3 體格，身軀。 4 精神狀態，心情。5 【園藝】...
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  1. The scheme adjusts the audio frame length without impairing audio quality according to the occupied level of audio playout buffer and changes the playout frame rate of video according to the occupied level of video playout buffer to achieve intra - media synchronization of audio stream and video stream

    演算法分別根據音頻和視頻播放緩沖區的佔用水平，在不影響音頻播放質量的情況下調整音頻幀的長度，實現音頻流媒體內同步；通過改變視頻流的播放幀率達到視頻流媒體內同步。
  2. By directed acyclic graph model, video server can select correct substreams by network bandwidth and terminal capability to get any frame rate, spatial resolution but coarse granular scalability presentation of video

    通過該模型，視頻流媒體服務器能夠根據網路帶寬，終端能力，正確地選擇子碼流進行傳輸播放。
  3. The format transcoding includes the frame size conversion, frame rate or field rate conversion, and interlaced / progressive video conversion. in this chapter, the frame size trancoding with arbitrary rational number ratio of l / m is put forward

    提出了變換比例為任意有理數l m時的空域任意尺寸轉碼，以及針對任意尺寸轉碼器的運動矢量重用演算法。
  4. In video shot segmentation, an improvement to double - threold shot segmentation algorithm is provided, which uses multi - frame sampling technique and can improve the performance significantly on the detection of gradual transition. an abrupt transition detection algorithm is also developed on the basis of the closest pixels matching in spatio - temporal slice, which decreases the false rate and computing strength greatly

    在視頻鏡頭分割方面，提出了一種基於多幀抽樣的雙重比較鏡頭分割演算法，有效地提高了對視頻鏡頭漸變檢測的性能;同時，針對視頻鏡頭突變的檢測，提出了一種基於最近鄰像素匹配的時空切片鏡頭突變檢測演算法，該演算法顯著降低了突變檢測的虛檢率和計算量。
  5. A new bit rate control strategy with both global pre - allocation and local segmentation ( glas ) for low bit rate application is proposed. first, it allots bit date to every frame in advance according to possessive rate of buffer, and then distribute different quantization parameters according conctete detail. by means of this method, buffer is controlled more particularly. and the quality of decoded image is improved, the traditional video image coding method, that is to say, the intraframe coding based on dct and the interframe prediction coding based on motion compensation, is not suitable for low bit rate compression and aside from this, the encoder is too complicated

    它首先在總體上根據緩存器的佔有率給每幀預分配比特數，然後再根據具體細節給予不同的量化參數。使緩存器得到了更細致的控制，解碼圖像的質量有所改善。針對傳統的視頻圖像編碼方法，即幀內基於dct的編碼加幀間基於運動補償的預測編碼存在不適于低比特率壓縮，編碼器復雜等不足，討論了基於3 - ddct的xyz視頻圖像壓縮編碼方法，提出了3 - ddct系數的三維「 z 」形掃描方案，大大提高了編碼效率。
  6. In packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors. the existing macroblock - layer rate control schemes calculates quantization parameters of all macroblocks ( mb ) in a frame in a raster scan order, and then encodes the mbs in the same order. actually, the quantization distortion is heavily dependent upon the coding order of mbs

    在基於包的無線視頻傳輸中，最佳帶寬分配時，不僅要考慮信源編碼失真，也要考慮由於通道差錯引起的通道失真；已有的宏塊層碼率控制演算法以矩陣掃描的順序計算一幀中所有宏塊的量化參數，事實上量化失真與宏塊的編碼順序有很大關系，改變宏塊的編碼順序，使復雜的宏塊分配到更多的比特數，顯然能大大提高編碼效率。
  7. 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。
  8. Video transcoding is the procedure to convert a compressed video into another one with different format ( i. e., different bit rate, different frame size and even different coding standard )

    視像轉碼程式是一個將壓縮視像格式轉變為另一種不同形式的程序（即不同編碼傳輸率、不同畫面大小、甚至不同編碼標準） 。
  9. 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。
  10. This method is especially suitable for small mobile devices such as handheld pcs, palm - size pcs and mobile phones that possess small display screens and light computational power, and work in low bandwidth wireless networks. the system rtbvideo based on the technique mentioned above typically provides qcif - size video with a frame rate of 5 - 15 fps for a 9. 6 kbps bandwidth in the internet

    在上述技術的基礎上開發的基於internet網際網路的實時視頻傳輸系統rtbvideo ，能夠提供格式為qcif （ 176 144 ）的視頻，人體輪廓清晰，畫面穩定流暢，且在9 . 6kbps帶寬下能達到每秒5 - 15幀。
  11. The low frame rate of the monitoring video also makes it possible to use more complex arithmetic to gain greater compression ratio

    監控視頻的低幀率，也為視頻實時壓縮提供了更充裕的時間，有可能採用復雜的演算法，獲得更好的壓縮效果。
  12. As for the compromise in the presentation quality, instead of video with full frame, full fidelity and full motion, one may reduce the image size, use less bits to represent colors, or reduce the frame rate

    作為對表達質量的折衷，取代視頻的全幀、全保真度和全運動，一個辦法是減小圖像大小，用較少的比特表示色彩，或者減小幀速率。
  13. This system realizes real - time video coding and transmission when the input picture resolution is 352x288 and its frame rate is 25 frames pre second. the performance of this coding system is satisfying in the output bit rate of 384kbps

    作者在對rtp rtcp協議的充分理解上，結合視頻編碼的原理，構建了視頻流的網路傳輸模型，並實現了其硬體系統，初步測試，可實現其基本功能。
  14. Aiming at the present condition of stb video post - processing, analyze the video post - processing algorithms which include sampling conversion, de - interlace and frame rate up - conversion

    然後針對現行機頂盒視頻后處理現狀，分析了視頻后處理所採用的方法，包括采樣率轉換、去隔行、幀率提升等。
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