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VIDEO DECODING METHOD AND APPARATUS FOR OBTAINING QUANTIZATION PARAMETER, AND VIDEO ENCODING METHOD AND APPARATUS FOR TRANSMITTING QUANTIZATION PARAMETER
VIDEO DECODING METHOD AND APPARATUS FOR OBTAINING QUANTIZATION PARAMETER, AND VIDEO ENCODING METHOD AND APPARATUS FOR TRANSMITTING QUANTIZATION PARAMETER
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机译:用于获得量化参数的视频解码方法和装置,以及用于发送量化参数的视频编码方法和装置
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摘要
Provided is a video decoding method according to an embodiment provided in the present disclosure, the video decoding method comprising: obtaining, from a picture parameter set, a QP initial value and picture header QP difference value information to be applied to a current picture; when the picture header QP difference value information indicates that QP difference value information is present in a picture header of the current picture, obtaining, from the picture header, a first QP difference value for the current picture; determining a QP for a coding unit included in the current picture by using the QP initial value and the first QP difference value; obtaining transformation coefficients of the coding unit by performing inverse quantization on the coding unit by using the QP; and reconstructing the coding unit by using the transformation coefficients.
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