block coding 中文意思是什麼

block coding 解釋
分組編碼
  • block : n 1 片，塊，大塊；粗料，毛料；木料；石料；金屬塊；【建築】塊料，砌塊；【地質學；地理學】地塊。2 ...
  • coding : n. 編碼；譯成電碼。
  1. Different bit rates are allocated to wavelet blocks according to energy the wavelet blocks include. bit rates in wavelet blocks are adaptively adjusted in coding process. by use of bipartition, the entropy of each wavelet block approximates to the target bit rate of one

    該演算法首先根據每個小波塊所含能量的多少和到每個小波塊實際編碼所用的比特數，給其分配不同的碼率；然後根據二分法，通過調整各小波塊的量化因子使得各小波塊的熵逼近它的目標比特率。
  2. At the same time, we applied this method into reduction of block effects in transform coding successfully

    我們還介紹了這種技術在消除變換編碼方塊效應中的成功應用。
  3. I ' m responsible for writing computer programs ： developing block diagrams ， utilizing available software and operation systems ， and coding machine instructions ； originating block digrams ， working from outlines of proposed systems ； developing file sizes ， programming specifications ； determing appropriate use of tape or disk files ， printer ， etc

    我負責編制計算機程序：編制部件圖；運用現有軟體和操作系統編制機器指令；根據所用系統的略圖自編部件圖；編制磁卡規格和程序規格；決定使用合適的磁盤、磁卡、印表機等等。
  4. Urban geographical feature - city road, road intersection, block and municipal piping system rules for coding structure

    城市道路道路交叉口街坊市政工程管線編碼結構規則
  5. Experiments show that the efficient motion estimation algorithm proposed can further reduce block matching distortion computations relative to conventional fast motion estimation algorithms with neglectable coding efficiency loss ( within 0. 1db )

    提出一種基於節點模型的可變形塊匹配運動估計演算法來搜索最佳運動矢量。實驗表明，在編碼性能損失很小的條件下，可以使得運動搜索塊匹配的運算量在通常快速運動搜索演算法的基礎上下降61 % 。
  6. Fractal coding has been proved useful for image compression. it is also proved effective for content - based image retrieval. in the paper, we present a block - constrained fractal coding scheme and a matching strategy for content - based image retrieval. in this coding scheme, an image is partitioned into non - overlap blocks of a size close to that of a query iconic image. fractal codes are generated for each block independently. in the similarity measure of fractal codes, an improved nona - tree decomposition scheme is adopted to avoid matching the fractal codes globally in order to reduce computational complexity. our experimental results show that our coding scheme and the matching strategy we adopted is useful for image retrieval, and is compared favorably with other two methods tested in terms of storage usage and computing time

    分形編碼在圖像壓縮方面取得了很好的效果，同時，分形編碼也能夠用於基於內容的圖像檢索.本文提出了一種基於塊限制的分形編碼演算法和匹配策略，並將它們用於圖像檢索.在我們編碼演算法中，圖像會被預先分成互相不重疊的子圖像塊，然後對這些子圖像進行獨立地分形編碼，從而獲得整幅圖像的分形碼.該編碼演算法能夠在很大程度上減少編碼時間.在進行圖像間相似性的匹配時，我們採用改進的基於九叉樹的分配策略，從而避免全局地進行分形碼的匹配，減少了計算量.實驗結果說明，我們的編碼演算法和匹配策略能夠比較有效地應用於基於內容的圖像檢索，在計算時間和存儲時間上都優于實驗中其它兩種方法
  7. The first facet is to put forward four - step block matching algorithm which can deduce the time of motion estimation and improve the coding efficiency, based on the traditional motion estimation algorithms. the second facet is to propose a new rate control algorithm, that is average - reaction rate control algorithm, based on the rate control of mpeg2. the new rate control algorithm can achieve rapid and efficient adaptive coding

    首先在對傳統的運動估計演算法進行研究和改進的基礎上，提出了四步搜索塊匹配的運動估計演算法，減少了運動估計的時間，提高了編碼效率；其次在分析mpeg2比特率控制的基礎上，提出了一種新的比特率控制演算法? ?平均響應比特率控制演算法，該演算法能夠快速有效的實現自適應編碼。
  8. If this frame field adaptation is extended to macro block level, the coding efficiency will be further increased

    在h . 264 avc中，圖像級的幀場自適應paff編碼和宏塊級的幀場自適應mbaff編碼都被采納。
  9. Channel coding has two kinds : block code and convolution code

    通道編碼分為分組碼和卷積碼兩大類。
  10. Convolutional coding is a coding scheme often employed in deep space communications and recently in digital wireless communications. it offers an alternative to block codes for transmission over a noisy channel

    卷積碼被運用於衛星通信和無線通信系統中，它提供了一種不同於分組碼的在噪聲通道下傳輸信息的一種編碼方案。
  11. 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頻編碼標準h . 264的基礎上，利用宏塊自身的特點和其時間、空間的相關性來判斷宏塊應該採用的編碼模式，從而提前得到該宏塊的最佳編碼模式，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，在壓縮碼流只有少許增加的情況下，大幅度地提高了幀內及幀間編碼的速度。
  12. C2dvlc employs context - based adaptive multiple table coding to exploit the statistical correlation between dct coefficients of one block for higher coding efficiency

    算術編碼利用編碼符號的聯合概率，並且其機制更易於概率匹配，因此編碼效率高。
  13. Abstract : by comparing the channel capacities hetwem orthogonal space - time block coding and multi - antenna array system over rayleigh fading channel, some capacity loss for orthogonal space - time block coding is obtained, which is a function of the code rate, the rank of channel matrix and the number of transmitter and receive antennas, although the system of orthogonal space - time block codes is simple and easy to implemented. if is also shown that there is no capacity loss only if both the code rate and the channel matrix rank are all one

    文摘:在研究瑞利衰落條件下正交空時分組編碼通道容量的基礎上，將其與多發送多接收天線系統的通道容量進行了比較.比較結果表明，正交空時分組碼雖編碼簡單，易於實現，但在通道容量方面存在較大的損失，損失的程度與編碼碼率、通道矩陣的秩及收發天線數等因素有關.進一步研究表明只有當編碼碼率和通道矩陣的秩都為1時，才沒有通道容量的損失
  14. Experimental results show when image compressing rate is high, decoded image of wavelet transform based compressing method can preserve objects outline well and has no block effect which may appear in dct block coding technique

    從運行結果可以看出，當圖像壓縮率較高時，使用基於小波分析圖像壓縮方案的解碼圖像能保持清晰的輪廓，無dct塊編碼壓的方塊效應。
  15. Then the performance for sttc in multipath and time - dispersive fading channels is derived. in chapter 5, space - time block coding ( stbc ) is studied

    研究了空時格狀編碼在多路徑和時間色散的衰落通道中的性能，得到它的性能限。
  16. Blind signal detection for space - time block coding in frequency - selective scenario with linear pre - coding

    頻率選擇性通道下空時分組碼直接盲信號檢測演算法
  17. Multi - user detection technology for space - time block coding systems

    系統的多用戶檢測技術
  18. Space time coding was proposed by combining transmit diversity and coding technology to improve the system performance, such as error bit rate, data rate, and system capacity. in particular, space - time block coding ( stbc ) schemes, proposed originally by alamouti were adopted by the 3g standardization committees as one key technique in 3g wireless systems

    將發送分集與編碼調制技術相結合，進一步產生了空時編碼技術，由於空時編碼技術具有優異的抗衰落性能，並且能通過發送分集和接收分集提供高速率、高質量的數據傳輸，因此它已經成為第三代移動通信技術的重要組成部分，並將繼續在下一代移動通信技術的發展中發揮重要作用。
  19. Because of the affection of noise and signal fading, in order to high data rate access and high quality, wireless communication need new technology to improve the link reliability and enhance the spectrum efficiency. mimo ( multiple input and multiple output ) can enhance the spectrum efficiency and increase channel capacity greatly, and reduce the multipath affection without spectrum band and power increasing. the 3th generation mobile communication wcdma is coming, with the purpose of putting mimo, stbc ( space time block coding ), space diversity into practice of wcdma systems, in order to lay the foundation of 3g toward 4g, this dissertation has done some research under this background

    在發射機和接收機使用多個天線進行數據傳輸的多輸入多輸出（ mimo ）技術，可以在不增加帶寬和天線發送功率的條件下，成倍的提高頻譜利用率，提高系統的通道容量，還可以抗多徑干擾。第三代移動通信wcdma即將到來，為了將多天線技術（ mimo ） ，空間分集技術，空時編碼技術用到wcdma系統中去，為第三代移動通信向第四代移動通信系統平穩過渡奠定一定的基礎，需要做一些理論上的研究。
  20. Space - time block coding is a new technique that combines coding, modulation and transmit diversity. it has been an ideal candidate for improving wireless communication performance and increasing data rates in systems with bandwidth constraints

    空時分組編碼是將編碼、調制和發射分集技術結合起來的一種新興技術，它是改善無線通信性能、提高帶限系統數據速率的一種理想的選擇。
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