Fig 1.
Examples of traditional ROIs (a) Original, (b) Sector ROI, and (c) Irregularly shaped ROI.
Fig 2.
Relationship between ROI partition and (a) mean, (b) standard deviation, and (c) entropy.
Fig 3.
ROI CU extraction framework.
Fig 4.
ROI extraction result based on HEVC quad-tree coding structure (a) original frame, (b) ROI based on quad-tree coding structure.
Fig 5.
Hierarchical coding framework of the proposed method.
Table 1.
H.265/HEVC encoding parameters and coding tool configuration.
Table 2.
Comparison of the coding bit-rate with the H.265/HEVC standard.
Fig 6.
Comparison of the coding bit-rate.
Table 3.
Comparison of BDBR and BDPSNR with the H.265/HEVC standard.
Fig 7.
Comparison of the R-D performance.
Table 4.
Comparison of SSIM with H.265/HEVC standard.