time compression coding 中文意思是什麼

time compression coding 解釋
時間壓縮編碼
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  • coding : n. 編碼；譯成電碼。
  1. 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
  2. The basic characteristics of the current data network are point - to - point, connectless, doing one ' s endeavor, no quality of service, etc. these characteristics do not meet the requirement of real - time services, therefore, the realization of voip need support of the some key technology. these technologies includes : speech sound coding and data compression, real - time transmission and control, mute compression and multicast, acoustic - echo cancellation and comfort noise generator, dynamic monitor and guarantee of quality of network service, as well as, the compatible of different network and different protocol with each other

    但現有的數據網路的基本特性：點對點的、無連接的、盡力而為的、沒有服務質量保證等特性並不適合與實時的業務要求，因此voip的實現需要一些關鍵技術的支持，這些技術包括：語音編碼和壓縮技術、實時傳輸和控制技術、組播技術、靜音壓縮和舒適噪聲生成技術、回聲消除技術、網路服務質量的動態監測和保證技術、以及不同的網路、不同的協議之間的互連互通等等。
  3. Fractal image compression coding is focused attention upon by researchers for it ' s good quality of high compression ration, resolution irrelevancy and fast decoding. but it ca n ' t be put into practice for the matching search of domain and range is too difficult and the coding time is too long

    分形圖像壓縮編碼以其高壓縮比、解析度無關性、快速解碼等優越特性而引起世人矚目，但卻常因為龐大的定義域計算和煩瑣的定義域值域匹配搜索而使編碼時間過長，從而影響了其實用性。
  4. Thus the coding of a color head image actually become the coding of a color component. the experimental results show this method not only improve the coding efficient and compression ratio but also obtain satisfactory effect of the reconstructed image. at the same time, this method also enables gray head images to be converted into color head images

    這樣對彩色人頭圖象的編碼實質上就變成了對其中的一個色彩分量的編碼，實驗結果表明該方法不僅提高了編碼效率和壓縮比，也能獲得較滿意的重構圖象效果，同時還使得將灰度人頭圖象轉換成彩色人頭圖象成為可能。
  5. It is well known that jpeg and jpeg2000 are still image compression standard with high performance at present time. so we choose them as our investigative base to compress image. my amendment in jpeg mainly includes self - adaptive huffman coding and reduction of blocking effect

    由於jpeg標準所提供的演算法還有進一步改進的可能，所以在文中將介紹如何對jpeg標準進行演算法改進，主要包括：自適應哈夫曼編碼、塊效應的消除；針對jpeg2000標準，將主要介紹jpeg2000標準核心演算法的實現以及如何用最大位平移方法實現感興趣區編解碼。
  6. In this paper, after the theory of video coding analyzed and some video compression standard compared, the development, constitution, application and characteristic of h. 264 video compression technique is focused on. and then the design of h. 264 video capturing and coding system based on adi dsp ( adsp - bf561 ) is illustrated, the hardware constitution and the software realization of the real - time video encoder are introduced particularly, and all kinds of techniques to optimize the h. 264 program according to the hardware configuration and compiling characteristics of adsp - bf561 are discussed especially

    本文在分析了視頻編碼的基本原理，並將目前常用的視頻壓縮標準進行了比較的基礎上，重點分析了h . 264視頻壓縮技術的發展、組成、應用及其特點，詳細論述了以adidsp （ adsp - bf561 ）為核心的h . 264視頻採集編碼系統的硬體組成和軟體實現，著重闡述了根據adsp - bf561系統的硬體及編譯系統特點，運用各種方法對h . 264編碼程序代碼進行優化的方法，最終實現了基於adiadsp - bf561的h . 264視頻採集編碼。
  7. In this thesis, we subsequently introduce the basic concepts of wavelet transform, especially the pyramidal algorithm and its fast realization - lifting scheme ; this scheme can decrease the time and space complexity of wavelet transform greatly. wavelet transform, the most perfect mathematical tool of signal processing theory, makes great success in the field of data compression. ezw and spiht are the milestones of wavelet image coding on the noiseless channels, and jpeg2000 adopts the ebcot algorithm

    嵌入式零樹小波編碼（ embeddedzerotreewavelets ）和多級樹集合分裂演算法（ setpartitioninginhierarchicaltrees ）都是迄今為止最為優秀的理想通道情形下的小波編碼方案：而jpeg2000靜態圖像壓縮國際標準採用的是嵌入式碼流優化截斷塊式編碼演算法（ embeddedblockcodingwithoptimizedtruncationoftheembeddedbit - streams ） 。
  8. High efficiency compression of electrocardiogram data based on time - varying zerotree wavelet packet coding

    應用時變小波包零樹編碼實現心電數據的高效壓縮
  9. One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system

    第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。
  10. Experiments validate that the encoder can realize real - time video coding at the speed of 25 cif pictures per second. moreover it possesses good visual quality and high compression ratio

    通過測試驗證，該編碼器在保持很好的圖像質量和高壓縮比的同時，實現了實時的視頻壓縮，處理速度可以達到cif格式的25幀/秒。
  11. With the mean of range block, the compression ratio is improved, the coding time and reconstruction time are decreased. then we discuss the relations among range blocks covariance, contrast scaling s and mse

    採用值域塊均值作為分形編碼的參數可加快分形編碼的速度，提高壓縮比和加快分形圖像壓縮解碼的收斂速度。
  12. 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頻編碼技術的標準的基礎上，提出了本系統所採用的視頻壓縮編碼方案，實現了用mpeg - 4視頻壓縮模塊對採集視頻進行大比率壓縮，用vfw及時對監控視頻進行採集、處理，用directshow技術實現視頻流的回放功能。
  13. The taboo - search algorithm and the ordinary genetic algorithm are combined in this paper and the new algorithm is named taboo - genetic algorithm. the new algorithm is applied into the matching search of domain and range in fractal image coding. the result shows that the coding time is decreased greatly when the compression ration and the peak signal and noise ration do not decline

    后來把禁忌搜索演算法與簡單遺傳演算法相結合，提出了一種新的禁忌搜索遺傳演算法，並應用於分形圖像壓縮編碼的定義域、值域匹配搜索，從而在不降低峰值信噪比和壓縮比的情況下極大地改善了分形圖像壓縮編碼的速度。
  14. Simulation shows that the compression time is saved greatly when the same coding result is kept

    實驗表明，在不影響恢復圖像質量的情況下，壓縮時間大大減少。
  15. At the same time, these obstacles promote the application of the video compression coding. based on different applications and different compression tools, many international video compression standards have been established by the international organizations

    基於不同的應用時期和不同的壓縮編碼技術，由一些國際組織建立了一系列的國際視頻壓縮編碼標準。
  16. We have applied wavelet transform and spiht coding based still image compressing programs on tms320c6701 for hardware real - time compression

    在tms320c6701評估板上用小波分解和spiht單幀圖像進行實時壓縮。
  17. The paper analysis the image compression standard of jpeg2000 for the generality, describe the roi coding of jpeg2000, in the same time, the author briefly introduce wavelet theory which is the basis of the discrete wavelet algorithm adopted by jpeg2000, analysis the algorithm of roi based on discrete wavelet transform. finally the author carry on the detailed analysis to ebcot algorithm and to the multiple rois method, analysis every block of encoding, proposes one coding algorithm of roi based on ebcot and proposes one method can realize image multiple roi and multiple quality compression

    本文從一般性出發分析了jpeg2000標準，對jpeg2000的roi編碼進行了描述，同時對jpeg2000採用的離散小波變換演算法的理論基礎進行了介紹，分析了基於小波變換的圖像感興趣區域編碼方法。最後特別對jpeg2000標準的ebcot演算法和多興趣區域編碼方法進行了詳細的研究，對編碼的各個環節進行了分析，提出了基於ebcot的感興趣區域編碼演算法及實現多興趣區域多質量的壓縮的編碼方法。
  18. 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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