比特率壓縮 的英文怎麼說

中文拼音 [bǐtèlǜyāsuō]
比特率壓縮 英文
brr bit rate reduction
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 特 : Ⅰ形容詞（特殊; 超出一般） particular; special; exceptional; unusual Ⅱ副詞1 （特別） especially; v...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 壓 : 壓構詞成分。
  • 縮 : 縮構詞成分。
  • 比特 : [計算機] bit （信息量單位）比特波形 bit pattern; 比特差錯率 bit error rate [probability]; 比特緩...
  1. Long - hole and geometrical proportion type of mixing unit is finally adapted in lpg supply system, and power and torque output of lpg engine are improved by increasing compression ratio, and ignition characteristic is tried to adjusted to satisfy engine performance. meantime emission performance and noise level of lpg engine at full - throttle and other various part - throttle operations are tested and compared with former gasoline engine. ( 3 ) it is verified by engine dyno tests that lpg engine has better synthesized performance at aspects of power and torque, fuel economy, as well as emission than former gasoline engine

    選擇了等比例長孔式混合器控制空燃比；通過提高壓縮比來彌補動力性的損失；以動力性為主控目標，對最大功率點、最大扭矩點、中等轉速、最低轉速點所對應的發動機轉速做了點火特性的調節；通過空燃比的合理控制，直接改善發動機的動力性、經濟和排放指標；作為對缸內燃燒過程的理論分析，進行了燃燒特性的實驗測試；對原汽油機和新開發的液化石油氣發動機，進行了外特性和部分負荷特性以及怠速的排放及噪聲對比性測試。
  2. 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。
  3. Based on the analysis, we bring up a new way of thinking, after considering the characteristics of the dds design in software radio system platform. we adopt the rom compression technique of dds special chip and other optimizing methods in the design. we still bring up a new modified method, of which the compression ratio is 139. 6 : 1

    在此理論分析基礎上，針對在軟體無線電平臺中的直接數字頻率合成設計特點，對dds專用晶元進行分析后提出新思路，將dds專用晶元中所使用的幅度表壓縮技術用於軟體無線電平臺中的dds設計，同時採用其它輔助方法進行了優化設計，並提出一種新的改進方法，將壓縮比提高到139 . 6 ： 1 ，很好的改進了軟體無線電平臺中直接數字頻率合成的雜散抑制性能。
  4. This paper mainly discusses the design principles and chief techniques of a digital accessing system for power - line communication net ( plcn ). the technology of low bit rate speech compression high - speed modem based on plcn adaptive equalization to the channel anti - jamming and anti - fading are applied in this system. so speech tele - control data and tele - protection signals can be transmitted high quality in the band - limited channel

    該系統綜合應用了低比特率語音信號壓縮編碼技術、基於電力通信網的高速調制解調技術、信號傳輸的通道自適應均衡技術和抗干擾、抗衰減技術，可在帶限通道中高質量的傳輸語音、遠動數據和遠方保護等信號，具有較高的整體性能。
  5. Simulation has shown that the proposed scheme can achieve more accurately in similarity examination than scheme which proposed by [ 102 ]. so the bit number of coded video stream was decreased about 22. 95 percent and thus the compression ratio was improved. although the coding cost was increased about 8. 25 percent by using proposed scheme

    模擬實驗表明，與文獻[ 102 ]方案相比，提出的方案雖然增加了約8 . 25的編碼器編碼耗時，卻有效提高了對視頻序列突變幀的檢測精度，從而進一步降低編碼器端輸出編碼視頻流的比特數達22 . 95左右，在基本不影響重構視頻信息視覺質量的同時提高了編碼器的壓縮效率。
  6. Under the careful retrospection and analysis on the previous and recent experiments about mechanical behavior of nanocrystalline metals performed by almost main investigators, the dislocation and atomic diffusion is believed to contribute hardly to the deformation of nanocrystalline alloy, and a model based on thermal activation process was applied to fit the experimental data of nanocrystalline ag

    結果表明，納米晶金屬ag的不僅具有比粗晶ag高2 - 6倍的拉伸和壓縮強度，而且在大范性形變階段顯示了極低的加工硬化和應變速率敏感性。結合位錯理路和非晶合金形變特徵，提出納米晶金屬ag的塑性變形主要由於晶界滑移貢獻。
  7. Unfortunately, in these situations, the notorious blocking artifacts resulting from block dct set a severe limit on the achievable bit - rate with acceptable quality

    然而，基於dct的傳統視頻壓縮方法由於在低比特率下出現塊失真嚴重影響恢復視頻質量。
  8. Experimental result shows the scheme is more suitable for low bit rate video coding

    試驗結果顯示對于比較低的比特率實時視頻壓縮有較好的結果。
  9. G723 aerithemetic is a compressing arithemetic that proposed by itu - t and applied in speech and other audio frequency signals of low velocity multimedia services, such as : h. 323, h. 324 system. this arithemetic provides inspection to silence speech frames and fills in comfortable noise when it is silence. if optimize system and increase the complexity limitedly, we can get higher quality of speech. g723. 1 is also available in music or other voice signals, but the managing effect is not as good as speech ' s

    G . 723演算法是itu - t建議的應用於低速率多媒體服務中語音或其它音頻信號的壓縮演算法，例如： h . 323 ， h . 324系統。這種聲碼器具備兩種比特率： 5 . 3kbps ， 6 . 3kps 。在幀邊界處可以在兩種速率之間進行切換。
  10. Mpeg2 contain ratio of two big characteristicses, a high compression for is sport compensating bringing, another to is according to the different need, and pass the to count of regulate to attain the code rate variable. below is an application of a few typical models

    Mpeg2有兩個大的特點，一個是運動補償帶來的高壓縮比，另一個就是根據不同的需求，通過參數的調節做到碼率可變。以下是幾種典型應用。
  11. Since an underwater acoustic communication channel is bandwidth - limited, transmission of quantized speech samples at high bit rates is restricted, hence speech signals must be compressed

    要想在水中進行數字語音通信就必須對語音信息進行大幅度壓縮，降低傳輸所需的比特率。
  12. As a conclusion, the jpeg stationary picture has a good compressing effect on middle and high bit rate, but exists a serious diamond effect at low bit rate resulting from the block - based dct scheme. so jpeg images can not very well make the needs transmitting images by networks at high compressing rate

    實驗結果表明，在一些低復雜度的應用中， jpeg2000不可能代替jpeg ，但對于有較好的圖像質量、較低比特率或者是一些特殊特性的要求（漸進傳輸和感興趣區域編碼等）時， jpeg2000將是最好的選擇，從而驗證了採用jpeg2000圖像壓縮標準的優越性和可行性。
  13. Firstly, we directly use the motion vectors of macro - blocks defined in mpeg - i / ii compressing standards and filter the immobile macro - blocks. then, we build a skin color model in ycbcr color space using the convergent property of skin color, and we present the gaussian model skin recognition method and positive - negative look - up table method in details. and we analyze the texture of skin after wavelet transform and present a bayesian method based texture recognition method and a high texture filtering method

    根據皮膚的運動性，首先直接利用mpeg -中的壓縮標準中有關宏塊運動預測的方法，提取宏塊的運動矢量，將沒有運動的宏塊過濾掉；然後，利用皮膚顏色的聚合性，在ycbcr顏色空間建立了皮膚的顏色模型，並分別闡述了基於高斯分佈模型的皮膚檢測法和正反概率表方法；最後，通過對皮膚進行小波變換后的紋理進行統計后，發現有效的利用皮膚紋理特徵，可以比較有效的過濾掉那些具有類似於皮膚顏色的背景，分別闡述了基於貝葉斯方法的紋理檢測方法和高紋理過濾法。
  14. Some aspects of vertical twin screw compressor are compared with horizontal twin screw compressor : the axial bearing load of the vertical twin screw compressor is 57 % lower than horizontal twin screw compressor ; it also can increase 5 % capacity but it only occupied the 30 % area of horizontal twin screw compressor ; and it has more efficient oil separator as its special figure

    並對立式螺桿製冷壓縮機與臥式螺桿製冷壓縮機進行了分析比較：立式螺桿壓縮機的軸向力比臥式壓縮機的軸向力減少57 % ；立式螺桿壓縮機的容積效率要比臥式壓縮機的容積效率高5 % ；由於油分的特殊環形設計，所以立式壓縮機的油分效果要比臥式壓縮機的油分效果好；而立式壓縮機佔地面積為臥式壓縮機的1 / 3 。
  15. This chip integrates the algorithms of coding and decoding in chip, which can accurately control the compression rate and compress many video signal formats, including pal and ntsc. on the other hand, it can also obtain excellent image quality and high compression rate. in this paper, we make the best use of adv6oilc fulfill the remote multimedia surveillance, which provides many advantages in implementing such system

    該專用壓縮解壓縮晶元系列片內集成了編解碼演算法，具有精確的壓縮比特率控制，能實時對包括pal和ntsc在內的多種視頻信號進行壓縮和解壓縮，同時由於採用小波變換進行圖像編解碼，能保證獲得很高的壓縮率和圖像質量。
  16. One of the common characters between traditional algorithms based on dct image coding is that regardless of the content of the image, they use a fixed size block to process, for example, jpeg, mpeg - 1 / 2, h. 263 use constant 8 * 8 block mode. the main work of this article is to propose a sequence images compression algorithm that is based on adaptive block dividing and object to the disadvantages of the one based on fixed - size block dividing. the proposed algorithm is an image compression method, which can auto - adjust dct block size ( 8 * 8 or 4 * 4 ) according to the difference of corresponding blocks between two frames of the sequential image and doesn ’ t process any unnecessary data blocks in order to enhance coding efficiency

    傳統的基於dct的圖像編碼演算法的一個共同特點就是:不管圖像的具體內容，採用固定的塊尺寸進行統一的處理，例如jpeg ， mpeg - 1 / 2 ， h . 263均採用固定的8 8分塊方式，本文的重點工作是針對這些採用固定的塊尺寸進行統一處理的演算法的一些缺點，提出了一種基於自適應分塊的序列圖像壓縮演算法，該演算法是一種根據序列圖像兩幀間對應塊的差別自動調整dct變換尺寸（ 8 8或4 4 ） ，對不必要的數據塊不進行處理，以提高編碼效率的序列圖像壓縮編碼方法，具有較高的編碼效率和較好的壓縮效果，與傳統的採用8 8固定分塊方式的壓縮編碼演算法相比，性能有較大幅度的提高，在文中，作者對兩者的壓縮編碼性能進行了分析比較。
  17. While jpeg2000 image performs very well at all bit rates. the experiment shows that the compression images have better vision effect by our jpeg2000 method, and it has some characters compared with other jpeg2000 compression software

    本文介紹的jpeg2000壓縮方法在較低比特率下，圖像內容也很容易辨別，圖像仍具有較好的視覺效果，並且和其它jpeg2000處理軟體相比也有一定的特點。
  18. With the theory of wavelet transform and reversible integer - to - integer wavelet transforms based on shifting frame used in image / video compression field introduced, a new real - time implement of speck algorithm using dsp chip is provided. then the technology of motion estimation and motion compensation is discussed and an adaptive technique for the wavelet video codec to reduce the " block artifact " is presented. and the implement of the wavelet video compression system using adv611 chip is discussed next with the performance emulation result

    在系統討論了小波理論在圖像視頻壓縮編碼領域的應用后，結合dsp技術提出一種基於dsp應用的實時低存儲需求的改進speck圖像編碼器；隨后探討基於小波變換的實時視頻編碼器的實現，在論述運動估計與補償技術的基礎上，針對應用空域運動估計補償技術的低比特率小波視頻編碼器提出一種自適應消除塊效應的技術；並討論了基於adv611晶元的視頻壓縮系統的壓縮性能；最後提出一種基於dsp平臺具有極低時延的小波視頻混合編碼方案，對該方案的壓縮性能進行了討論並給出初步的硬體實現方案。
  19. Brr bit rate reduction

    比特率壓縮
  20. Based the research background of the remote video surveillance which makes real - time and adaptive compression and streaming video sequence necessary, this paper first does the deep research on video compression and coding which is the hardcore part of mpeg4 mainly from two facets

    遠程視頻監控要求對視頻圖像進行實時的壓縮編碼以及根據網路狀況自適應地對壓縮視頻流進行流化傳輸，因此視頻編碼器必須能夠進行快速的編碼和比特率控制。
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