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Fig 1.

Examples of traditional ROIs (a) Original, (b) Sector ROI, and (c) Irregularly shaped ROI.

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Fig 1 Expand

Fig 2.

Relationship between ROI partition and (a) mean, (b) standard deviation, and (c) entropy.

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Fig 2 Expand

Fig 3.

ROI CU extraction framework.

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Fig 3 Expand

Fig 4.

ROI extraction result based on HEVC quad-tree coding structure (a) original frame, (b) ROI based on quad-tree coding structure.

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Fig 4 Expand

Fig 5.

Hierarchical coding framework of the proposed method.

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Fig 5 Expand

Table 1.

H.265/HEVC encoding parameters and coding tool configuration.

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Table 1 Expand

Table 2.

Comparison of the coding bit-rate with the H.265/HEVC standard.

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Table 2 Expand

Fig 6.

Comparison of the coding bit-rate.

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Fig 6 Expand

Table 3.

Comparison of BDBR and BDPSNR with the H.265/HEVC standard.

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Table 3 Expand

Fig 7.

Comparison of the R-D performance.

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Fig 7 Expand

Table 4.

Comparison of SSIM with H.265/HEVC standard.

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Table 4 Expand

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