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    Comparison between video coding schemes (HEVC, H.264, MPEG2, etc.)

     

    JENS-RAINER OHM et al. Contracted several video coding schemes in the literature "Comparison Of The Coding Efficiency of Video Coding Standards-Including High Efficiency". The encoding scheme includes: HEVC, H.264, MPEG4, H.263, MPEG2. Here we demonstrate their test results for two resolutions of 1280x720, 1920x1080. The quality of the video is used to measure the quality of the video using PSNR (Peak Signal to Noise Ratio, Peak Refrigeration). PSNR (Peak Signal To Noise Ratio, Peak Record Numei) reflects the difference between the damaged video sequence and the original sequence after compression encoding; the larger the difference between the two sequences, the lower the PSNR value, indicating the quality of the video Difference. The corresponding relationship between the code rate and PSNR of several coding schemes is shown in the figure. Knowledge about PSNR can refer to article: Full reference video quality evaluation method (PSNR, SSIM) and related databases - General reference objective video quality evaluation method (MSE, PSNR, SSIM) principle 1280x720 resolution video experiment results 1280x720 resolution HEVC relative to other coding standard savings 1920x1080 resolution video experiment results HEVC compared to other coding standards saving symbols in 1920x1080 resolution As can be seen from the figure, although the difference in video sequence content may affect the quality of the video under the same rate, the relationship between the video coding scheme is determined. Overall, the video quality of different video compression coding methods has the following relationships at the same bit rate: H.264> MPEG4 > MPEG2 The objective video quality evaluation algorithm is described above, and the subjective quality evaluation test in the paper here. Subjective evaluation includes both HEVC and H.264 coding standards. The Kimono1 video sequence results are shown in the figure. The CACTUS video sequence is shown in the figure. As can be seen from subjective evaluation test, HEVC is basically more than 50% of H.264.

     

     

     

     

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