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Hybrid-resolution encoding and decoding method and a video apparatus using the same

專利號
US10097821B2
公開日期
2018-10-09
申請人
Tencent Technology (Shenzhen) Company Limited（CN Shenzhen, Guangdong Province）
發(fā)明人
Chenchen Gu; Xunan Mao; Jingchang Chen; Jing Lv; Ronggang Wang; Bocheng Xin; Wen Gao
IPC分類
H04N19/139; H04N19/59; H04N19/159; H04N19/176; H04N19/172; H04N19/117; H04N19/132; H04N19/137; H04N19/182
技術(shù)領(lǐng)域
frame,macroblock,sampling,resolution,video,decoding,max_res,picture,coding,in
地域： Shenzhen

摘要

The present invention provides a hybrid-resolution encoding and decoding method. The method includes performing full-resolution standard coding on an I frame that adopts only intra-frame coding in a video frame sequence, and performing frame reconstruction to obtain a reconstructed frame of the I frame; performing down-sampling on the reconstructed frame of the I frame to obtain a first sampling image of the reconstructed frame of the I frame; performing down-sampling on a non-I frame in the video frame sequence to obtain a second sampling image of the non-I frame; performing standard coding on the second sampling image of the non-I frame by using the first sampling image of the reconstructed frame of the I frame that corresponds to the non-I frame as a reference frame; and sending a video code stream that includes the full-resolution standard coded I frame and the standard coded non-I frame.

說明書

S203: Perform down-sampling on the I frame obtained from the full-resolution standard decoding to obtain a sampling picture of the I frame. Specifically, the same with the coding, the down-sampling is performed on the I frame picture obtained from the decoding, and the width of the obtained sampling picture is 1/a of the width of an original frame picture and the height is 1/b of that of the original frame picture, and a and b are greater than 1. If the width and height of the obtained sampling picture are not integral multiples of the width and height of a macroblock (for example, in the H.264 standard, the width and the height of the macroblock are both 16 pixels), the sampling picture is expanded to obtain a sampling picture of the picture with width and height being integral multiples of the width and height of the macroblock.

權(quán)利要求

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