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    • 3. 发明授权
    • Bit rate control method and apparatus
    • 比特率控制方法和装置
    • US08189660B2
    • 2012-05-29
    • US12055660
    • 2008-03-26
    • Yun-gu LeeByung-cheol SongNak-hoon Kim
    • Yun-gu LeeByung-cheol SongNak-hoon Kim
    • H03D3/24
    • H04N19/152H04N19/115H04N19/124H04N19/136H04N19/176H04N19/60
    • Provided are a bit rate control method and apparatus for intra-only coding, the method including calculating a similarity between at least one block group from among block groups including a plurality of macroblocks in a current frame to be encoded and at least one block group in a previous frame, which corresponds to the at least one block group in the current frame, determining a target bit amount of a current block group including a current macroblock using a video characteristic of the previous frame if the calculated similarity is greater than a threshold value, determining a target bit amount of the current macroblock based on the determined target bit amount of the current block group, and calculating a quantization parameter of the current macroblock based on the determined target bit amount of the current macroblock and the amount of bits generated for up to a previous macroblock.
    • 提供了一种用于内部编码的比特率控制方法和装置,该方法包括:计算来自包括当前待编码帧中的多个宏块的块组中的至少一个块组与至少一个块组之间的相似度, 前一帧,其对应于当前帧中的至少一个块组,如果所计算的相似度大于阈值,则使用前一帧的视频特性来确定包括当前宏块的当前块组的目标比特量 基于所确定的当前块组的目标比特量来确定当前宏块的目标比特量,并且基于所确定的当前宏块的目标比特量和当前宏块的所生成的比特量来计算当前宏块的量化参数 直到之前的宏块。