時頻編碼 的英文怎麼說

中文拼音 [shíbīnbiān]
時頻編碼 英文
time frequency coding
  • : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : Ⅰ動詞1 (編織) weave; plait; braid 2 (組織; 排列) make a list; arrange in a list; organize; gr...
  • : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
  • 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
  1. For video codec, after analyzing and researching the newest standard h. 264, an efficiency algorithm was proposed in this paper using self - feature, spatial correlation and temporal correlation to judge the encoding mode of one macro - block. through this method, the best prediction mode can be obtain before encoding, then, the coding time can be reduced dramatically with a little expense of bit - rate. for video transmission, in this paper, a transmit method was proposed using tcp / ip protocol under the environment of local networks

    首先,在分析及研究最新的視標準h . 264的基礎上,利用宏塊自身的特點和其間、空間的相關性來判斷宏塊應該採用的模式,從而提前得到該宏塊的最佳模式,新方法有效地克服了原標準演算法中窮舉式的復雜演算法,在壓縮流只有少許增加的情況下,大幅度地提高了幀內及幀間的速度。
  2. Considering the developmental trend of the video compress and the demands of the people, this paper makes researches on the visual section of the mpeg - 4 standard, present an amendment to the ds search algorithm, and does some optimization to the module of compress which is utilized frequently by the encoder so that the encoder can accomplish real - time compression on adsp - blackfin535 evm board to the cif picture, the size of which is 352 by 288

    因此,研究mpeg - 4視標準並實現實具有重要意義,特別是在圖像質量和實性方面要求都很高的場合,例如電視會議、視電話和iptv等。本文結合這種需求和趨勢,研究了mpeg - 4sp原理,改進了ds演算法。通過內存優化、結構優化和匯級優化,最終實現了器在adsp - blackfin535評估板上的實
  3. In the border router, we design a new diffserv scheduler ( bswcs : bit - based weight time slot compensate scheduler ), which dynamically adjust the weighted quantum of service. combined with the error concealment technology in the video decoder, in case of severe congestion which cause losing a lot of ip packets, these algorithms have been proved effective, hence the delay, jitter and the perceived picture quality all meet requirement for real - time video transmission

    4建立了一個區分服務網路模型,根據視的特點,提出了一種針對視幀傳輸的新的服務優先等級標識演算法,即根據不同視幀解的重要程度和網路的傳輸狀況將不同視幀的數據包標記為不同等級,賦予不同的質量保證。
  4. In the process of real - time video coding, it is valuable to reduce the checking times to 4 4 blocks

    有效減少4 4塊預測模式的判斷次數,在實過程中很有價值。
  5. The purpose of this dissertation is to implement an efficient real - time avs - m video encoder on dm642

    本文的目的是在dm642平臺上實現一個高效的實avs - m視器。
  6. At last, the vlsi implementation complexity of motion estimation in video encoding is analyzed. furthermore, a fast block matching algorithm based on hardware implementation and its vlsi architecture are presented

    最後,本文對實器中運動估計的vlsi實現方法進行了研究,提出了一種易於硬體實現的快速塊匹配演算法及其vlsi結構。
  7. Research of error resilience technology for video communication based on h. 263 codec major : signal and information processing data : author : meng yan signature : tutor : zhang erhu liu shichang signature : abstract the reconstructed image quality can be degraded substantially by errors during the transmitting over the communication channel, especially when the video is compressed by temporal and spatial coding ways, which leads to error propagation in frame sequence, so the error resilience procedure should be performed to improve the reconstruction quality

    由於通信系統的通道不可避免的存在噪聲,傳輸數據流必然存在誤。對于h . 26x的視流,由於空域和域的壓縮方法以及熵方法的應用,即使是一個比特的錯誤,常會影響一個區域的圖像不能正確解,同錯誤的圖像還會擴散影響后續數幀圖像。因此有必要在標準解程序的基礎上,添加容錯功能。
  8. On exploring tfsk time frequency shift keying for improving underwater acoustic communication

    時頻編碼水聲通信技術及性能分析
  9. At the same time, to achieve space, time and frequency diversity, some research is done on stf technology, which joints transmit diversity and ofdm technology

    對發射分集技術和ofdm相結合,通過適當的技術來獲得空、分集的空時頻編碼技術進行了一定的研究。
  10. In this paper, the problem of video data real time transmitting for machinery facilities remote monitor and control system in network environment is discussed, and a dynamic adaptive coding method is proposed to coordinate the contradiction between the transmission speed and quantity of the data

    摘要根據機械設備遠程監控系統中視數據的實網路傳輸問題,提出用動態適應視技術協調傳輸數據量和傳輸速度之間的矛盾。
  11. Then some key techniques in mpeg - 2 and mpeg - 4 recommendations are studied and compared in detail, including motion estimation, motion compensation, discrete cosine transform, inverse discrete cosine transform, variable length coding and layered description of picture and code stream

    然後深入研究了mpeg - 2建議的視標準,包括ts流、 ps流、鐘恢復、視與音的同步、基於場的運動補償、 dct及變長
  12. At the same time, this thesis analyz es the optimal resourse allocation problem in video coding and reviews recent advances in rate - distortorn optimized video coding

    本文還分析了視中的最佳資源分配問題,詳細討論了率失真優化理論在信源和通道中應用的最新進展。
  13. Based on dct domain r - d analysis, we provide a new constant bitrate ( cbr ) rate control algorithm, which can cure tm5 algorithm " two limitations, buffer conformance and scene cut problem. for variable bitrate ( vbr ) rate control, we proposed a single - pass vbr rate control algorithm for real - time video coding application

    對于vbr率控制,作者還提出了一種面向實應用的單通道vbr率控制演算法,它避免了多通道vbr演算法的多次或預分析的開銷,減小了量化步長波動,可提供穩定的視質量。
  14. This thesis introduces a motion compensated 3d wavelet scalable video coding system. and three key techniques of the coding system have been thoroughly researched, namely mc temporal filtering, 3d wavelet transform structure and 3d wavelet subband coding. firstly, traditional wavelet transform theory and wavelet lifting scheme are illustrated

    本文在對運動補償三維小波可擴展視框架進行分析的基礎上,對該框架涉及的三個關鍵技術,即運動補償域濾波、三維小波變換結構以及三維小波子帶進行了深入研究。
  15. The application of hardware decoding circuit is widely, because it not only can be used on computer, but also can be used on consumer equipment like digital - tv and dvd - player. the avs and h. 264 standards and the architecture of digital video decoder chip are investigated in the thesis, and a high - definition multi - mode decoder soc chip is proposed. the chip can support avs level 4. 0 / 6. 0 and h. 264 main profile level 4. 0

    本文在研究了avs和h . 264視標準和數字視晶元系統結構的基礎上,設計了同支持avs和h . 264的高清解soc晶元,能夠對avslevel4 . 0 / 6 . 0和h . 264mainprofilelevel4 . 0的高清晰度視流實
  16. With the development of general - purpose processors and high efficient algorithms, it is possible to implement a software - based real - time video encoder, and its low cost and easy upgradability attract developers " interests to migrate video encoding from dedicated hardware to more flexible software

    對于實應用環境,視以往大多由專用設備完成。但隨著通用處理器和數字信號處理器( dsp )主的提高、面向視處理的指令集出現,使得更為經濟、靈活的軟體成為可能。
  17. At first the article puts emphasis on analyzing those current network ip technology, various audio codec algorithms, realtime stream medium transmit technology and those process mechanism of realtime low bandwidth audio stream medium, etc. in allusion to high requirement of system, resulted from so many terminations of attending a lecture, rate of flow, bad situation of network and realtime interactive voice, a new algorithm and the relevant project of processing low bit - rate audio stream was brought forward

    本文著重分析了當前網路方面的ip技術,各種音演算法,實流媒體傳輸技術,實低帶寬音流媒體的處理機制等等。針對網路實應用中諸如客戶端眾多,各種多媒體數據流量大,網路狀況差,語音交互實性等方面較高的要求,提出一種新的實低帶寬音流處理演算法及相應的處理方案。
  18. Future wireless applications, such as video cellular telephony, wireless internet access and wireless lans, have open a new field for wireless multimedia communication - image communication, which push a growing demand for fast, economic, low - energy mobile multimedia communication. however, there are still several bottlenecks - bandwidth, low - delay, power and noise etc, need to be solved

    然而由於無線視通信存在許多瓶頸與協議問題:包括帶寬要求、實性要求、功率限制和通道噪聲等,面向無線的視與傳輸技術已成為當今信息科學與技術的前沿課題。
  19. Afterwards, the simulation of the frequently - used search algorithms will be undertaken, for instance, three step search algorithm, four step search algorithm, new three step search algorithm, diamond search algorithm etc. after the comparison between those search algorithms in terms of accurateness of search and complexity metrics of calculation, it is shown that the diamond search algorithm has the best performance

    主要內容有:首先,從mpeg - 4視的核心模塊運動估計入手,對常用的四種搜索演算法進行了模擬,從搜索準確度和計算復雜度兩方面給出對比結果。優化了菱形搜索演算法的搜索流程,避免了重復計算。 sad計算採用提前退出策略,減小了計算量而沒有損失搜索準確度。
  20. The second, on the foundation of analyzing with comparing some important coding standards of video at present, the thesis puts forward a project of video coding standards adopting this system. it also realizes the functions of using video compression of mpeg - 4 to compress the video data with the big ratio, using the vfw to gather and deal with the monitoring video on time, using directshow to realize the function of playing back of video streams

    第二,在分析和比較目前各種視技術的標準的基礎上,提出了本系統所採用的視壓縮方案,實現了用mpeg - 4視壓縮模塊對採集視進行大比率壓縮,用vfw及對監控視進行採集、處理,用directshow技術實現視流的回放功能。
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