幀內編碼幀 的英文怎麼說
中文拼音 [zhèngnèibiānmǎzhèng]
幀內編碼幀
英文
intracoded frames- 幀 : 量詞(幅, 用於字畫)
- 內 : 名詞1. (內部; 里頭; 里邊) inner; inside; within 2. (妻子或妻子的親屬) one's wife or her relatives 3. (姓氏) a surname
- 編 : Ⅰ動詞1 (編織) weave; plait; braid 2 (組織; 排列) make a list; arrange in a list; organize; gr...
- 碼 : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
- 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
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2, under equally see the quantity, compress the calculate way s exportation code plain deal connect the good and bad that decide its function of the good and bad, or say, output the code the term of same alike rate the bottom, and the portrait quantity reflected the function of the compression calculate way. adopt with dv all because of the m - jpeg an inside compress the way, efficiency of their compression certainly want lower than mpeg2. certainly, this is an average circumstance, at the time that low code rate, the mpeg2 can compare the m - jpeg compression the ratio high and a lot of but keep the good diagram to resemble the quantity ; but at request the diagram to resemble the quantity the good time for example the sow the room program edit with empress period creation, their difference to is not very big. too is to say, just at the compression efficiency that not emphasize the portrait quantity that the circumstance, mpeg2 is high
2在同樣的視頻質量下,壓縮演算法的輸出碼率直接決定其性能的優劣,或者說,輸出碼率相同的條件下,圖象質量的優劣反映了壓縮演算法的性能。由於m - jpeg和dv都是採用幀內壓縮方式,它們的壓縮效率當然要比mpeg2低。當然,這是一個平均情況,在低碼率的時候, mpeg2可以比m - jpeg的壓縮比高很多而保持較好的圖像質量而在要求圖像質量很好的時候比如演播室節目編輯和後期製作,它們的差別不是很大。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。A new bit rate control strategy with both global pre - allocation and local segmentation ( glas ) for low bit rate application is proposed. first, it allots bit date to every frame in advance according to possessive rate of buffer, and then distribute different quantization parameters according conctete detail. by means of this method, buffer is controlled more particularly. and the quality of decoded image is improved, the traditional video image coding method, that is to say, the intraframe coding based on dct and the interframe prediction coding based on motion compensation, is not suitable for low bit rate compression and aside from this, the encoder is too complicated
它首先在總體上根據緩存器的佔有率給每幀預分配比特數,然後再根據具體細節給予不同的量化參數。使緩存器得到了更細致的控制,解碼圖像的質量有所改善。針對傳統的視頻圖像編碼方法,即幀內基於dct的編碼加幀間基於運動補償的預測編碼存在不適于低比特率壓縮,編碼器復雜等不足,討論了基於3 - ddct的xyz視頻圖像壓縮編碼方法,提出了3 - ddct系數的三維「 z 」形掃描方案,大大提高了編碼效率。We select fpga of type xc3s200 as hardware to design the coder and display the hardware resources inside, moreover study the method and steps of designing dsp, based on fpga, by using system generator, finally, it emphasizes the design process of multi - band excitation vocoder. we can work out the module of high pass filter and the module of low pass filter, module of divide frame, module of keynote rough estimate, module of keynote fine estimate, module of band - separated v / u judgment / verdict and module of band - separated amplitude estimate, by using simulink, ise and system generator
本文選用型號為xc3s200的fpga作為設計編碼器的核心硬體,介紹了其內部所含的硬體資源,並研究了利用systemgenerator基於fpga設計dsp的方法和步驟,最後,本文把重點放在多帶激勵語音編碼器的設計上,利用simulink , ise和systemgenerator分別設計其中的高通低通濾波器模塊、分幀疊加模塊、基音粗估模塊、基音精細估計模塊、分帶v / u判決模塊、分帶幅度估計模塊。The characteristic of h. 264 standard can be concluded mainly into three aspects. it is more practicable, more adaptive to ip net and mobile system and it improves the key components of coding structure based on hybrid video coding framework. for example, it adds coding mode decision, multi frame prediction, context - based adaptive variable length coding ( cavlc ), 4x4 integer transform, loopfilter, etc. the improvement in performance leads to higher computational complexity in the new standard
H . 264的技術特點可以歸納為三個方面,一是注重實用;二是注重對移動和ip網路的適應;三是在混合編碼器的基本框架下,對其主要關鍵部件都做了重大改進,如多模式運動估計、幀內預測、多幀預測、基於內容的變長編碼、 4 4二維整數變換等。Referring to the self - guard mechanism of g. 729, characteristics of rs coding and scdma channel, a scheme using rs ( 7, 5 ) coding with crc and block interleaving is put forward and its effectiveness is verified by both pesq algorithm and subjective test at the end of chapter 4
結合g . 729自身保護機制、縮短rs編碼和scdma通道的特點,提出了基於rs ( 7 , 5 )碼帶crc檢錯及幀內交織的保護方案。並在第四章末採用pesq演算法驗證了該保護方案的有效性。Frame coding or field coding can be adaptively selected on a picture - by - picture basis and also on a more localized basis within a coded frame
幀編碼還是場編碼可以自動選擇,原則上基於圖象與圖象之間的變化,以及編碼圖象內部的局部化特徵。The paper studies the theory and coding methods of the low bit rate video recommendation h. 263 + detailedly, realizes real - time software codec based on h. 263 + under linux os, furthermore, finishes some negotiable coding options which can observably improve the coding efficiency, such as advanced prediction mode, advanced intra coding mode, deblocking filter mode and modified quantization mode
263 +的原理和編碼方法做了深入的研究,軟體實現了基於h 263 +標準的視頻編譯碼器在linux操作系統下的實時編解碼,並實現了能顯著提高編碼效率的幾種可選編碼模式,主要包括先進預測模式、先進幀內編碼模式、塊邊界濾波模式和改進量化模式等。Most of these standards are based on the method of inter - frame motion compensation and two - dimensional discrete cosine transform ( 2d - dct ) and encode and describe the color video in ycbcr 4 : 2 : 0 format, which want to take advantage of human visual system ( hvs ) to save bit expense by decreasing the resolution of two color difference components
當前國際上的壓縮標準普遍採用幀間運動補償加幀內二維離散餘弦變換的編碼方法,並且將彩色視頻序列表示為ycbcr格式,試圖利用人眼的視覺特性降低對色差信號的解析度來節省比特開銷。Fast image scaling with high fidelity plays a key role in video processing and codec by providing various resolution, reducing bitrates to facilitate video transmission and achieving the best visual quality at the receiver
在視頻編碼轉化中,必須確保幀內編碼幀(幀)經過縮放后仍然具有很高的質量,才能使后繼運動預測幀的運動補償誤差達到最小化,從而到達較好的視頻編碼轉換效果。A rapid intra prediction mode decision algorithm for avs - m video coding
視頻編碼的快速幀內預測模式判斷演算法In order to support content - based functions in the object - based visual standard of mpeg - 4, each frame of video sequences should be represented in terms of video object planes ( vop " s )
在mpeg - 4視頻編碼標準中,為了實現基於視頻內容的交互功能,其視頻序列的每一幀由視頻對象面( vop )來表示。The standard is designed to give a new technical solution for a broad range of applications, such as very low bit rate conversational services and entertainment quality broadcast, interactive video - on - demand services etc. for the enhancement of the coding efficiencies, the new standard adopts new tools as following : multiple reference pictures, variable block - size with seven block sizes in motion prediction, quarter - pixel accuracy for motion vector, short word - length integer transform, context - adaptive entropy coding and loop filter deblocking
H . 264 / avc標準支持從低帶寬、高誤碼率的無線移動視頻通信到高帶寬、低誤碼率的有線視頻廣播等多種應用,因此,日益受到業界的關注。為了實現更高的編碼效率, h . 264 / avc標準採用了很多新的編碼技術,如多參考幀預測、多尺寸編碼塊模式、 1 / 4像素精度運動矢量、整數變換量化、基於內容的熵編碼、新型幀內預測、去除方塊效應的濾波器等。As to three types of frames in mpeg2, there are two different types of coding method, which are inter - frame coding and intra - frame coding
在程序中,對於三種不同的幀類型(即i 、 p和b ) ,分別採用了幀內編碼和幀間編碼兩種方式。After a careful study of the standards of itu - t h. 26x series, i developed some new algorithms for motion estimation and intra - frame / inter - frame model selection in h. 263 + image compression encoding, by combination of some up - to - date methods published. in motion estimation, i proposed an algorithm of adaptive selection of 3 - step and 4 - step search
本論文在仔細研究了itu ? th . 26x系列標準的基礎上,綜合應用了新出現的一些演算法,對于h . 263 +圖象壓縮編碼演算法中運動估計和幀內、幀間模式選擇等關鍵部分作了研究。Here we introduce the unique characteristic of h. 264 in detail, which includes intra frame residual coding, integer cosine transformation, binary adaptive arithmetic coding, concept network adaptation layer, an ember of different block sized used for motion prediction and 1 / 8 pixel motion estimation etc
摘要介紹了h . 264獨有的特點,包括幀內預測、整數餘弦變換、二進制自適應算術編碼、概念性網路適配、多種塊尺寸運動搜索、 1 / 8像素運動估計精度等。In mrme, coding of intra - frame and inter - frame are done in wavelet decomposition domain. mrme costs much less time to perform motion estimation operation compared to block matching motion full search algorithm ( fsa )
該方法可保證幀內、幀間編碼過程始終在小波分解域內進行,運動估計運算量比塊匹配全搜索法小得多。Considering the stability and continuity of face region, and the error propagation effect due to the high error rate in wireless channels, the intra - refresh method is used. the redundant data is not too much owing to the continuity, and the error propagation effect can be stopped accordingly
由於視頻中出現的人臉具有穩定性,連續性等特點,同時考慮到無線移動通道由於誤碼率高而引起差錯傳播問題,所以採用幀內編碼宏塊刷新的方法。Simulation results testified that the structure and algorithms in this paper can achieve virtually the same quality with greatly reduced computational requirment compared with cpdt structure
另外,本文還討論了通過在轉碼的每一幀中強制加入幀內編碼塊來提高演算法的抗誤碼能力。Forth, a novel error control method for internet video communication is proposed, named adaptive intra update. this method can effectively enhance packet loss resilience and improve the quality of decoded video
第四:提出了一種新穎的可應用於因特網視頻通信的差錯控制方法,稱為自適應幀內編碼刷新。分享友人