High Efficiency Video Coding Intra Prediction Optimization Algorithm Based on Region of Interest

Renjie SONG; Yuandong ZHANG

doi:10.11999/JEIT190330

Volume 42 Issue 11

Nov. 2020

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Renjie SONG, Yuandong ZHANG. High Efficiency Video Coding Intra Prediction Optimization Algorithm Based on Region of Interest[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2781-2787. doi: 10.11999/JEIT190330

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Renjie SONG, Yuandong ZHANG. High Efficiency Video Coding Intra Prediction Optimization Algorithm Based on Region of Interest[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2781-2787. doi: 10.11999/JEIT190330

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High Efficiency Video Coding Intra Prediction Optimization Algorithm Based on Region of Interest

doi: 10.11999/JEIT190330

Renjie SONG,
Yuandong ZHANG^,

School of Computer, Northeast Electric Power University, Jilin 132012, China

Received Date: 2019-05-13
Rev Recd Date: 2020-05-24

Available Online: 2020-07-01

Publish Date: 2020-11-16

Abstract

Abstract

For the high complexity of High Efficiency Video Coding (HEVC) intra prediction coding algorithm, an HEVC intra prediction optimization algorithm based on Region Of Interest (ROI) is proposed. Firstly, the algorithm divides the Region Of Interest and Non-Region Of Interest (NROI) of the current frame according to image saliency; Then, the final grading depth of the current coding unit is determined by the proposed fast Coding Unit (CU) partitioning algorithm based on spatial correlation in the ROI, and the unnecessary CU partitioning process is skipped. Finally, the proposed Prediction Unit (PU) mode fast selection algorithm is used to calculate the energy and direction of the current PU based on the ROI, and the current PU prediction mode is determined according to the energy and direction, and the correlation calculation of the rate distortion cost is reduced, Achieving the purposes of reducing coding complexity and saving coding time. The experimental results show that the proposed algorithm can reduce the coding time by 47.37% on average when the Peak Signal-to-Noise Ratio (PSNR) loss is only 0.0390 dB.
- High Efficiency Video Coding(HEVC),
- Region Of Interest(ROI),
- Coding Unit(CU) division,
- Prediction Unit(PU) mode selection

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References(13)

References

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