- [網(wǎng)絡(luò)] 宏塊；宏塊數(shù)據(jù)；巨區(qū)塊
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macroblocks中文什么意思
例句與用法
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- 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。