摘要(英) |
The newest video compression standard H.265/HEVC is developed by JCT-VC (ISO / IEC MPEG and ITU-TVCEG), and it could achieve high coding efficiency compared with H.264/AVC. However, it could not replace H.264/AVC which is the most popular video compression currently. In addition, as the quality requirements of hardware devices become higher and higher, such as Ultra High Definition (UHD), and so on. Therefore, transcoding for H.264 to HEVC efficiently is currently important study .
Efficient quantization parameter configuration for H.264-to-HEVC transcoding in this thesis to optimize the transcoding for H.264 to HEVC. The study is divided into two parts, the first part is coding and decoding the original sequence on H.264 and HEVC, and utilize different quantization parameters, image characteristics and experimental environment. Furthermore, the second part is to change the input sequence, up-sampling and down-sampling the original sequence, then followed by H.264 and HEVC codec. Experimental results show that the sequence which is encoded by H.264 and QP is 23 then transcode to HEVC and QP is 27 could reduce 61% bitrate and PSNR is still about 38.12 dB, compared to the sequence coded by H.264 and QP is 27.
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參考文獻 |
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