temporal coding 中文意思是什麼
temporal coding
解釋
時間編碼-
In the past few years, there has been significant interest in digital video applications like video conferencing and video e - mailing over internet, video telephony over public switched telephone networks ( pstn ) and wireless networks, etc. by removing spatio - temporal redundancies existing in adjacent frames, motion estimation can reduce the coding bit - rate significantly
低速率視頻編碼技術已在許多領域得到了應用，如在pstn （公共電話網） 、無線網、 n - isdn （窄帶綜合業務數字網） 、 b - isdn （寬帶綜合業務數字網）上傳輸視頻會議、可視電話和無線手持終端等。 -
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。 -
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碼。對于h . 26x的視頻編碼流，由於空域和時域的壓縮方法以及熵編碼方法的應用，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碼，同時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碼程序的基礎上，添加容錯功能。 -
By first reviewing the basic video coding theory and then analyzing kinds of sub - module in video coding system. adaptive overlapped block motion compensation ( aobmc ) is combined with pds technology for temporal prediction. the system composed of hybrid transform coding and motion compensation prediction coding is constructed
第五章討論了本文運動估計和運動補償方法在視頻編碼中的應用，首先闡述了視頻編碼理論和編碼系統各個子模塊的基本原理，然後在預測性菱形搜索和自適應重疊塊運動補償基礎上運用變換編碼加運動補償的預測編碼方法實現一個混合視頻編碼的方案。 -
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頻編碼框架進行分析的基礎上，對該框架涉及的三個關鍵技術，即運動補償時域濾波、三維小波變換結構以及三維小波子帶編碼進行了深入研究。 -
Space - time coding technique is a coding technique which is applied in mimo system. it correlates to multiple antennae and signals transmitted in different periods in temporal and spatial domains, which enable the receiver can overcome fading over mimo channel and reduce error code transmitted
空時編碼是一種用於mimo系統的編碼技術，該編碼在多根發射天線和各個時間周期的發射信號之間能夠產生空域或時域的相關性，這種空時相關性可以使接收機克服mimo通道衰落和減少發射誤碼。 -
Motion estimate is the key skill in video coding, a way of between frames coding. it bases on the theory of temporal correlation between frames, to reduce temporal redundancy
運動估計是視頻編碼的關鍵技術，它是一種幀間編碼的方法，其最基本的原理是利用幀間的時間相關性，減少時間冗餘度。 -
Generally speaking, a coding algorithm must be low complexity and work at high speed. in this paper, the coding methods are studied to increase coding speed. firstly, a novel method based on temporal prediction to detect all - zero dct coefficients is proposed, which can greatly reduce the coding cost and maintain a good tradeoff between correct detecting ratio and false detecting ratio with little additional computation
本文以h . 263壓縮編碼標準為基本框架，針對其中影響壓縮效率和速度的瓶頸展開研究，包括快速運動搜索演算法的研究、預判零方法的研究以及mmx技術在視頻編碼中的應用等，提出了一種基於時域預測的預判零新方法，在不影響重建視頻質量的條件下具有較高的判別效率，節約了大量dct變換和量化的時間，提高了編碼的速度，達到了實時性要求。 -
Fortunately, lapped transform ( lt ), a classical transform arithmetic, possesses the dct ’ s feature of simple realization and low storing cost, while maintaining dwt ’ s advantage. by analyzing its time lapped transform ( tlt ) and frequency lapped transform ( flt ), this article brings forward a arithmetic which carries the temporal laps and frequent laps at the same time and discusses this time - frequency lapped method ( tflt ) combining with context - based entropy coding
疊式變換（ lt ）兼有餘弦變換（ dct ）實現簡單、存儲開銷小和dwt的優點，文中通過分析已有的時域重疊（ tlt ）和頻域重疊（ flt ）疊式變換，提出一種同時進行時域和頻域重疊的疊式變換演算法（ tflt ） ，並結合上下文熵編碼，討論時頻域重疊式變換演算法。 -
Interframe predictive coding is used to eliminate the large amount of temporal and spatial redundancy that exists in video sequences and helps in compressing them. motion eliminate can help to eliminate these redundancy. different kinds of algorithms use different criteria for comparison of blocks
它採用開放的編碼系統和新一代視頻編碼技術，它在視頻編碼發展史上第一次把編碼對象從圖像幀拓展到具有實際意義的任意形狀視頻對象，從而實現了從基於像素的傳統編碼向基於對象和內容的現代編碼的轉變。 -
This method can maintain the superiority of traditional wavelet transform to effectively remove temporal redundancy. in addition, owing to the feather of the integer form of wavelet lifting scheme, the computational complexity and memory requirement are reduced, which can enhance the performance of the wavelet video coding system
該方法能夠保持傳統小波變換的優勢，高效的去除時域冗餘信息，同時通過提升小波的整型變換能夠快速實現的特點，降低了計算復雜度，減小了內存需求，提高了小波視頻編碼器的性能。 -
Block - based motion estimation is the key technique of video coding which can reduce the temporal redundancies of sequences to make compression efficient
在視頻壓縮中，使用基於塊匹配技術的運動估計能夠有效去除視頻序列之間存在的大量時間冗餘，對于提高壓縮的效率是至關重要的。 -
Moreover, we use prediction coding process to achieve high compression efficiency, error data still cause errors to propagate in the temporal direction
而且，由於編碼器利用幀間預測來降低數據量，導致錯誤數據又會在時間域上進行擴散。
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