macroblocks造句
例句與造句
- 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(shù)情況下，圖像中運(yùn)動(dòng)的變化在圖像內(nèi)和圖像間往往是連續(xù)的。 - the second technique is error tracking . it is implemented at the encoder . it can terminated the error-progagation affects by intra refreshing the affected macroblocks
差錯(cuò)跟蹤技術(shù)在編碼器方實(shí)現(xiàn)，它通過(guò)把受錯(cuò)誤感染的宏塊重新采用幀內(nèi)編碼模式來(lái)中止錯(cuò)誤的擴(kuò)散。 - 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
在基于包的無(wú)線視頻傳輸中，最佳帶寬分配時(shí)，不僅要考慮信源編碼失真，也要考慮由于信道差錯(cuò)引起的信道失真；已有的宏塊層碼率控制算法以矩陣掃描的順序計(jì)算一幀中所有宏塊的量化參數(shù)，事實(shí)上量化失真與宏塊的編碼順序有很大關(guān)系，改變宏塊的編碼順序，使復(fù)雜的宏塊分配到更多的比特?cái)?shù)，顯然能大大提高編碼效率。 - this paper also present a method that reduces the computational requirements of the encoder, while still upholding picture fidelity and remaining compatible with the h . 263 bitstream standard . often a substantial number of inter-macroblocks in the encoder are reduced to all-zero values after quantization . we introduced a method of predicting when those macrobolcks will quantize to zeros, which in turn allows us to eliminate the computation that would normally be required for those macroblocks
在編碼器中宏塊經(jīng)過(guò)dct變換和量化后，總有一定數(shù)量的宏塊的系數(shù)全為零，因此在進(jìn)行dct轉(zhuǎn)換前先進(jìn)行預(yù)測(cè)，將那些預(yù)測(cè)系數(shù)全為零的宏塊提前查找出來(lái)，然后將系數(shù)全為零的宏塊azq（all-zeroquantizedcoefficients）直接送到熵編碼模塊進(jìn)行可變長(zhǎng)編碼。 - this paper also present a method that reduces the computational requirements of the encoder, while still upholding picture fidelity and remaining compatible with the h . 263 bitstream standard . often a substantial number of inter-macroblocks in the encoder are reduced to all-zero values after quantization . we introduced a method of predicting when those macrobolcks will quantize to zeros, which in turn allows us to eliminate the computation that would normally be required for those macroblocks
在編碼器中宏塊經(jīng)過(guò)dct變換和量化后，總有一定數(shù)量的宏塊的系數(shù)全為零，因此在進(jìn)行dct轉(zhuǎn)換前先進(jìn)行預(yù)測(cè)，將那些預(yù)測(cè)系數(shù)全為零的宏塊提前查找出來(lái)，然后將系數(shù)全為零的宏塊azq（all-zeroquantizedcoefficients）直接送到熵編碼模塊進(jìn)行可變長(zhǎng)編碼。 - It's difficult to find macroblocks in a sentence. 用macroblocks造句挺難的
- compared with the traditional pixel domain video transcoding, the transcoding from hdtv to sdtv in the dct domain, not only avoids the dct and idct transforms, but also avoids motion estimation, the most computation costing process, by making full use of the macroblock motion vector information from the input hdtv stream to construct the motion vector for the according sdtv macroblocks . it ’ s helpful to achieve the hdtv to sdtv video transcoding in the real time
dct域hdtv至sdtv視頻轉(zhuǎn)碼,與傳統(tǒng)的像素域轉(zhuǎn)碼相比,不僅避免了dct、idct運(yùn)算,還通過(guò)利用輸入hdtv碼流中宏塊的運(yùn)動(dòng)矢量信息直接構(gòu)造轉(zhuǎn)碼后sdtv相應(yīng)宏塊的運(yùn)動(dòng)矢量,避免了運(yùn)算量極大的運(yùn)動(dòng)估計(jì)過(guò)程,有利于hdtv至sdtv實(shí)時(shí)轉(zhuǎn)碼的實(shí)現(xiàn)。 - 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
本文提出的一種基于視頻幀內(nèi)后處理的錯(cuò)誤隱藏算法，采用幀內(nèi)紋理恢復(fù)的內(nèi)插技術(shù)，將相關(guān)性最強(qiáng)的象素作為損壞塊內(nèi)插的信息源，并引入相鄰塊的紋理信息，從而獲得較好的圖象恢復(fù)質(zhì)量。