macroblock 中文意思是什麼
macroblock
解釋
宏塊-
By integrating motion compensation and recompose frame, classifying the integration according to the mode of macroblock coding and motion compensation integration, and combination in another way to achieve to improve the performance of decoder
在對idct優化過程中提出了一種結合vlcd （變長碼解碼）和iq （反量化）解碼過程的優化方法；把運動補償和圖像重組過程結合在一起，按圖像編碼方式和運動補償方式進行分類組合，實現解碼性能提高。 -
An adaptive macroblock - group coding algorithm for progressive and interlaced video. in proc. iscas 2004, vancouver, may 2004, pp. iii - 969 - 972
與h . 264中的mbaff演算法的性能相比，提出的ambaff演算法可以得到0 . 16db的平均編碼增益。 -
In packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors. the existing macroblock - layer rate control schemes calculates quantization parameters of all macroblocks ( mb ) in a frame in a raster scan order, and then encodes the mbs in the same order. actually, the quantization distortion is heavily dependent upon the coding order of mbs
在基於包的無線視頻傳輸中，最佳帶寬分配時，不僅要考慮信源編碼失真，也要考慮由於通道差錯引起的通道失真；已有的宏塊層碼率控制演算法以矩陣掃描的順序計算一幀中所有宏塊的量化參數，事實上量化失真與宏塊的編碼順序有很大關系，改變宏塊的編碼順序，使復雜的宏塊分配到更多的比特數，顯然能大大提高編碼效率。 -
Utilization and redetermination of macroblock type in video spatial definition downscale transcoder
轉換編碼中宏塊編碼模式的利用及重新判斷 -
In intra - frame postprocessing error concealment techniques in this dissertation, interpolating pixel values within a damaged macroblock from its four 1 - pixel - wide boundaries and introducing the texture information from its four adjacent blocks can improve the quality of reconstructed image. it was found that the visual texture in damaged macroblocks can be reconverted with his algorithm in experiment
本文提出的一種基於視頻幀內后處理的錯誤隱藏演算法，採用幀內紋理恢復的內插技術，將相關性最強的象素作為損壞塊內插的信息源，並引入相鄰塊的紋理信息，從而獲得較好的圖象恢復質量。 -
Fast inter mode decision algorithm based on the intrinsic complexity of the macroblock
基於圖像細節程度的快速幀間模式選擇演算法 -
It has a macroblock - level pipelined structure which consists of mv predictor unit, reference fetch unit and pixel interpolation unit
該結構由3個流水階段組成： mv預測模塊參考數據獲取模塊分數像素插值模塊。 -
This article discusses the modified frame rate control algorithm based on tmn11 and the modified macroblock - layer rate control algorithm
論文重點討論了無線網路中基於tmn11的改進型幀率控制演算法及改進型宏塊層碼率控制演算法。 -
The motion vector of adjacent macroblocks ( spatial or temporal ) is used as the initial searching vector of the current macroblock, to search a multistage in an involute - like scanning
在大多數情況下，圖像中運動的變化在圖像內和圖像間往往是連續的。 -
Third, the other key algorithms of transcoding in dct domain was introduced, including : motion compensation in dct domain, the choosing of macroblock pattern and rate control
而後，介紹了dct域轉碼中的其它關鍵演算法，包括: dct域的運動補償演算法，宏塊模式的選擇，碼速控制演算法。 -
This dissertation presents the research on the fast motion compensation algorithm with the shared macroblock information in the dct domain and rate control algorithm with dct coefficients
本文主要研究在dct域內基於宏塊公共信息的運動補償快速演算法和利用dct系數進行碼率控制演算法。 -
A inter - frame error concealment algorithm based on motion estimation is proposed in this dissertation, the motion vectors and coding mode can be rebuilt, it can be applied in any frame modes and macroblock modes
本文提出了基於運動估值的幀間預測錯誤隱藏演算法，能對運動矢量和編碼模式的進行有效重建，適應各種情況的幀間錯誤隱藏。 -
And the retrieval algorithms of mismatched macroblock for dct - domain requantization trancoder are introduced in the chapter. many simulation results testified that the motion - compensation only for p - pictures transcoding solution is a better compromise between the complexity and video quality
大量模擬結果證實，本文提出的省略b幀運動補償轉碼器是視頻質量和運算復雜度的一種較好的折衷演算法。 -
According to the complexity threshold, we auto - adaptatively adjust the qp. we use the smaller qp to quantify the more complicated macroblock and use the bigger qp to quantify the less complicated macroblok. the proposed algorithm can improve the h. 264 standard algorithm by a rate control algorithm on macroblock layer
在宏塊層利用了現有mad值表示宏塊復雜度，進一步根據宏塊的復雜度閾值自適應地調整量化參數qp ，對復雜度高的宏塊採用較小的qp值，進行精細量化;對復雜度低的qp值採用較大的qp值，以節約比特數。
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