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    • 5. 发明申请
    • SYSTEM AND METHOD FOR VIDEO ENCODING
    • 用于视频编码的系统和方法
    • US20100158108A1
    • 2010-06-24
    • US12636321
    • 2009-12-11
    • Megha AGARWALSumit JOHARKaushik SAHAEmiliano Mario Piccinelli
    • Megha AGARWALSumit JOHARKaushik SAHAEmiliano Mario Piccinelli
    • H04N7/26
    • H04N19/48H04N19/115H04N19/149H04N19/152H04N19/172H04N19/176H04N19/18H04N19/61
    • An embodiment of the present disclosure relates to system comprises an encoding device. Said encoding device comprises a compression unit, a quantizer, a bit estimator, a bit rate encoder and a variable length encoder. An embodiment also is a method of encoding. Said method estimates a number of bits to encode a macroblock after compressing the data stream. Then the estimated bit encoded by a bit rate encoder and further quantized by the quantizer to get the final encoded bit stream. The number of bits required to encode a macroblock is estimated after the quantization process and before the encoding process. The macroblock bit estimator estimates the number of bits required to encode a particular macroblock depending on the quantized AC coefficients of that macroblock and the quantized AC coefficients of the neighboring frames normalized at a macroblock level.
    • 本公开的实施例涉及一种包括编码装置的系统。 所述编码装置包括压缩单元,量化器,比特估计器,比特率编码器和可变长度编码器。 实施例也是一种编码方法。 所述方法估计在压缩数据流之后编码宏块的位数。 然后估计比特由比特率编码器编码并由量化器进一步量化以获得最终的编码比特流。 在量化处理之后和编码处理之前估计编码宏块所需的位数。 宏块比特估计器根据该宏块的量化AC系数和在宏块级标准化的相邻帧的量化AC系数来估计对特定宏块进行编码所需的比特数。