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    • 2. 发明申请
    • CODING CONCEPT ALLOWING PARALLEL PROCESSING, TRANSPORT DEMULTIPLEXER AND VIDEO BITSTREAM
    • 编码概念允许并行处理,传输解复用器和视频比特
    • WO2013107906A3
    • 2013-09-26
    • PCT/EP2013051043
    • 2013-01-21
    • FRAUNHOFER GES FORSCHUNG
    • SCHIERL THOMASGEORGE VALERIGRUENEBERG KARSTENKIRCHHOFFER HEINERHENKEL ANASTASIAMARPE DETLEV
    • H04N7/26
    • H04N19/91H04N19/107H04N19/169H04N19/436H04N19/65
    • A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and coded using context-adaptive binary arithmetic coding is subdivided or chopped into tranches with continuing the context-adaptive binary arithmetic coding probability adaptation across tranche boundaries. By this measure, tranche boundaries additionally introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy coding efficiency of these elements. On the other hand, however, the tranches are smaller than the original slices, WPP substreams or tiles and accordingly they may be transmitted earlier, i.e. with lower delay, than the un-chopped original entities, i.e. slices, WPP substreams or tiles. In accordance with another aspect, which is combinable with the first aspect, substream marker NAL units are used within a sequence of NAL units of a video bitstream in order to enable a transport demultiplexer to assign data of slices within NAL units to the corresponding substreams or tiles so as to be able to, in parallel, serve a multithreaded decoder with the corresponding substreams or tiles.
    • 使用上下文自适应二进制算术编码将片段中的图像,WPP子流或块并且使用上下文自适应二进制算术编码进行编码的原始字节序列有效载荷被细分或切割成具有跨越边界的上下文自适应二进制算术编码概率适应的阶段。 通过这种措施,在切片,WPP子流或瓦片中另外引入的分支边界不会导致这些元素的熵编码效率的降低。 然而,另一方面,这些段落比原始片段,WPP子流片或片段小,因此它们可以比未切割的原始实体(即片,WPP子流或片)更早发送,即具有较低的延迟。 根据可与第一方面组合的另一方面,在视频比特流的NAL单元的序列内使用子流标记NAL单元,以便使传输解复用器能够将NAL个单元内的片段的数据分配给相应的子流或 以便能够并行地为具有相应子流或瓦片的多线程解码器服务。