video encode 中文意思是什麼
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The subject has mainly finished designing and debugging software and hardware of a / d decode module, fpga video processing module, video data frame deposit module, base clock produce module, d / a encode module, i2c bus control module, etc. a / d decode module gathers analog tv signals and realize video decode ; fpga video processing module deals with the data after decoding and produces systematic logic control signal ; video data frame deposit module offers the buffering area to a large n umber of high - speed video data ; base clock produce module through input basic video signal offers system accurate relevant synchronous signal ; under control of video processing module d / a decode module convert digital video data into compound tv signal which can be shown in tv directly ; i2c bus control module is used to initialize the chip of system by simulating i * c bus timing
本課題主要完成了a d解碼模塊、 fpga視頻處理模塊、視頻數據幀存模塊、基準時鐘產生模塊、 d a編碼模塊、 i ~ 2c總線控制模塊等部分軟、硬體設計及調試。其中a d解碼模塊採集模擬電視信號實現視頻解碼； fpga視頻處理模塊對解碼后的數據進行去噪處理的同時還負責系統的邏輯控制；視頻數據幀存模塊為大量高速的視頻數據提供緩沖區；基準時鐘產生模塊通過輸入基準視頻信號為系統提供精確的相關同步信號； d a編碼模塊在視頻處理模塊的控制下把數字視頻數據轉換成復合電視信號供顯示用： i ~ 2c總線控制模塊模擬i ~ 2c總線時序實現對系統中編、解碼晶元的初始化。 -
It is expected to be used for 3g personal handy - phone system as standard algorithms which encode speech signals and decode it. additionally, this kind of algorithms which own excellent quality can be application in viewphone and video order programme etc. the thesis introducethe algorithm structure of g. 729
該協議在可預見的將來可能應用於三代移動通信系統中作為語音編解碼演算法。另外，由於其良好的性能也可應用在多媒體系統中如：可視電話，視頻點播等。本論文概要介紹了g . 729協議的演算法結構。 -
Their originally developed " super mpeg - 2 pre post processor " enables high quality picture recording playback, and equipped with their " intelligent 2 pass encode " technology, high picture quality dubbing from hdd to dvd is possible. mr. namiki explained that jvc will continue to appeal technology in their dvd recorders with the " 3 - in - 1 function, video quality, and easy use " points in developing their dvd recorders. cyberlink, inc
他對使用自行開發的" super mpeg - 2 encode pre post processor "進行錄像和播放時的高畫質技術進行了說明，還介紹了日本victor株式會社正在開發的著眼于"三合一功能畫質方便性"的dvd錄像機，該錄像機採用" intelligent 2 bus encode "技術，以使hdd能向dvd進行高畫質轉錄的這些技術為基礎。 -
The emphases of the researches are focused on the dct transform in the video signals processing, the theories of huffman encode and motion compensation algorithms
主要研究了離散餘弦變換對視頻圖像的處理，霍夫曼編碼原則和運動補償的原理。 -
In this paper, a gray video md - 3d - spiht algorithm is proposed, which extends the md - spiht algorithm into 3d - spiht. this method is to divide the 3 - d wavelet coefficients into some number p of different groups according to their spatial and temporal relationships, and then to encode each group independently using 3d - spiht algorithm, so that p independent embedded 3d - spiht substreams are created. multiple descriptions are created
2 、將md - spiht方法推廣應用於視頻序列，提出了灰度視頻md - 3d - spiht演算法，該演算法先對一組視頻圖象進行多級離散三維小波變換，在小波域建立空間方向樹，及對空間方向樹分組，再分別對各組進行3d - spiht編碼，即產生多個描述，且每一描述的碼流是完全嵌入式的，易於實現質量可分級編碼。 -
Research of implementation amp; optimization technologies of video encode decode
視頻編解碼器的實現與優化技術研究 -
Using the wide variety of formats supported by directshow and the characters based on com, this thesis researches the architecture of directshow, its basic theory and construction of its basic component - filter, realizes rtp as two filters. with the help of existing capture and encode components, making use of directshow architecture, this thesis realizes an integrated video transmission experiment model
利用directshow提供的寬松的格式支持和基於組件對象模型的特徵，本文研究了directshow的體系結構、基本原理和基本構件? ?過濾器的構造方法，將rtp協議作為過濾器進行了實現，並利用directshow的體系結構和已有的採集、編碼組件，實現了一套完整的視頻傳輸實驗模型。 -
Each encoder board can encode 4 ways of video and consists of 4 pieces of tw9903, used to implement analog video ’ s a / d transformation, 1 piece of aq424, used to combine four ways of digital video into one, 1 pieces of ime6400, used to encode digital video into mpeg - 4 code
每個編碼板採用4個tw9903實現4路模擬視頻的a / d轉換， 1個aq424實現數字視頻的四路合成， 1個ime6400實現數字視頻的mpeg - 4壓縮編碼，從而實現4路視頻編碼。 -
Most of these standards are based on the method of inter - frame motion compensation and two - dimensional discrete cosine transform ( 2d - dct ) and encode and describe the color video in ycbcr 4 : 2 : 0 format, which want to take advantage of human visual system ( hvs ) to save bit expense by decreasing the resolution of two color difference components
當前國際上的壓縮標準普遍採用幀間運動補償加幀內二維離散餘弦變換的編碼方法，並且將彩色視頻序列表示為ycbcr格式，試圖利用人眼的視覺特性降低對色差信號的解析度來節省比特開銷。 -
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。 -
Research of implementation amp; amp; optimization technologies of video encode decode
視頻編解碼器的實現與優化技術研究 -
Based upon the conditions described above, we have designed a video codec system using dsp which can encode and decode h. 263 or mpeg - 2 video stream
基於以上情況，我們開發了一套基於dsp實現的視頻編解碼器，它能按照h 263協議或mpeg - 2協議進行編解碼。 -
Through using for reference and demonstrating the technology of video processing system of domestic and foreign, author has put forward a set of video processing system schemes suitable for the china " s actual conditions. by using the digital technology, such as digital encode - decode, digital phase - locked, digital filter, digital image storing, the system schemes realizes tv signal noise reduction and time error elimination in real time, and makes the system be a integrated noise reduction and time based corrector really
通過借鑒和論證國內外時基校正和視頻降噪的相關技術，作者提出了一套適合於中國國情的視頻處理系統軟、硬體方案實現模擬電視的信號數字轉換以及利用數字編解碼、數字鎖相、數字濾波、數字圖像存儲等數字技術來實現電視信號實時去噪和消除時基誤差，使系統真正做到集時基校正與降噪一體化。 -
Digital - video encode - decode chip, one of the basic components of digital - video devices, is still relying on import products
數字視頻解碼晶元是數字電視等視聽設備的核心器件，目前絕大多數仍依賴國外進口。 -
For example, the, higher qulity video phone and video conference ; video store and display with higher resolution ; video communication in wireless network ; etc. but a key technology in all these application is video encode and decode
例如更高質量的可視電話和視頻會議，具有更高清晰度的視頻存儲和播放，無線網路中的視頻通信等。這些應用中一個關鍵的技術環節是圖像的壓縮和解壓縮。 -
Using the above algorithms, h. 263 baseline video - encoder implementation can encode more than 40fps in qcif resolution on a pentium mmx 500 - mhz computer. almost ali of the low bit - rate video compression techniques degrade quality. to combine the video quality evaluation with hvs, the relationship betvveen the motion activity and perceptual video quality are studied, and a video quality evaluation method based on motion activity is proposed, in which video defmition and smoothness are defined
本文提出一種基於運動特徵的視頻質量評價方法，考慮了人眼對視頻信號感受質量與畫面運動劇烈程度之間的關系，分別討論了反映視頻質量的視頻清晰度和流暢度，評價結果更符合人眼視覺特性，並且這種評價對編碼具有一定的指導作用。 -
In this article, firstly, technologis used in video compression are introduced, including picure sampling, encode mode and procedure of video compression. then, recommendation k263 is presented in particular, and its technology characters are mainly discussed
本文首先介紹了視頻壓縮用到的相關技術，包括圖象的采樣，編碼方式，以及視頻壓縮的流程；隨后詳細的介紹了h . 263建議，對h . 263建議的技術特點進行了研究。 -
With performance of up to 900 million floating - point operations per second ( mflops ) at a clock rate of 150 mhz, tms320c6711 is fit to tackle with the problem. this thesis made a deep research on the h. 263 standard and the tms320c6711. we propose the plan of the software and the hardware for the realization of the h. 263 protocol which include the structure of the whole program, the c code of the key algorithm of the h. 263, the c code of some subprogram, and the circuit for image processing with the tms320c6711 as the processor. furthermore, we optimize some subprogram in common use to make the coding more quickly. we encode a video sequence with the tms320c6711dsk successfully, even if the compression rate is as high as 100, video effect we get after decoding the code stream is satisfying
首先系統地研究了h . 263協議編碼器的基本演算法，句法，碼流結構和tms320c6711dsk的原理結構以及ccs2 . 0的開發環境；在系統的軟體方面給出了總體流程圖，對于h . 263協議編碼器的某些核心演算法和子程序，給出了部分源代碼，對于dsp的各種代碼優化方法進行了討論，並且對代碼進行優化，從而在提高系統處理速度的同時減少代碼大小和內存需求量；硬體方面以tms320c6711為核心處理器，提出了基於tms320c6711的圖像處理平臺的硬體實現方案，並給出了原理電路圖；最後在tms320c6711dsk上成功對視頻數據進行高壓縮比（ 100倍以上）的編碼，對回傳的結果解碼后得到了令人滿意的效果。 -
Mpeg standard is a mature and widely applied standard, which is used to encode audio and video in various quality and ratio
Mpeg標準是一種得到廣泛應用的，成熟的標準，用於對視頻和音頻進行多種質量和壓縮率的壓縮編碼。 -
Intelligent stream overstrides the limitation of broadband and instantaneous transmission of video. it provides the encoder platform to encode files with different bandwidths simultaneously and combine them into one file. intelligent stream also provides fault - tolerant clientserver transmission
智能流超越帶寬和影像即時傳送的限制：第一，智能流提供轉換器（ encoder ）平臺，讓各式不一樣帶寬的文件同時轉換（ encode ）併合成只有一個文件；第二，智能流也提供一個容錯的客戶服務的傳送方式。
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