Abstract
Although the existing rate control algorithm in HEVC (High Efficiency Video Coding) has achieved relatively high coding efficiency, it is not efficient in ensuring a higher quality for the visually important parts than others in a frame. In this paper, we propose a new rate control algorithm for HEVC based on ROI (Region of Interest), aiming at improving the visual quality while still maintaining the accuracy of rate control. Firstly, a novel method is developed for saliency estimation of the current frame based on spatial and temporal saliency estimation. Then the saliency map is utilized to determine ROI and guide the bits allocation process at the frame level and LCU (Largest Coding Unit) level. Finally the Lagrange multiplier and the quantization parameter will be clipped in a narrow range for smooth visual quality. Experimental results show that the proposed algorithm can make the output bit rate meet the target number and effectively raise the PSNR of ROI. As a result, the overall visual quality of the encoded sequence is highly improved compared to the original HEVC encoder.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Sullivan, G., Ohm, J., Han, W.J., et al.: Overview of the high efficiency video coding (HEVC) standard. IEEE Trans. Circuits Syst. Video Technol. 22(12), 1649–1668 (2012)
Kim, I.K., Min, J., Lee, T., Han, W.J., Park, J.: Block partitioning structure in the HEVC standard. IEEE Trans. Circuits Syst. Video Technol. 22(12), 1697–1706 (2012)
Li, B., Li, H., Li, L., Zhang, J.: λ domain rate control algorithm for high efficiency video coding. IEEE Trans. Image Process. 23(9), 3841–3854 (2014)
Liu, Y., Li, Z.G., Soh, Y.C.: Region-of-Interest based resource allocation for conversational video communication of H.264/AVC. IEEE Trans. Circuits Syst. Video Technol. 18(1), 134–139 (2008)
Agrafiotis, D., Bull, D.R., Canagarajah, N., Kamnoonwatana, N.: Multiple priority region of interest coding with H.264. In: IEEE International Conference on Image Processing (ICIP), pp. 53–56 (2006)
Chiang, J.-C., Hsieh, C.-S., Chang, G., Jou, F.-D., Lie, W.-N.: Region of interest based rate control scheme with flexible quality on demand. In: IEEE International Conference on Multimedia Expo, pp. 238–242, July 2010
Shen, L., Liu, Z., Zhang, Z.: A novel H.264 rate control algorithm with consideration of visual attention. Multimedia Tools Appl. 63(3), 709–727 (2013)
Sanchez, V., AulÃ-Llinà s, F., Vanam, R., Bartrina-Rapesta, J.: Rate control for lossless region of interest coding in HEVC intra-coding with applications to digital pathology images. In: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 1250–1254 (2015)
Harel, J., Koch, C.: Graph-based visual saliency. In: 20th Annual Conference on Neural Information Processing Systems, pp. 545–552 (2007)
Nie, Y., Ma, K.: Adaptive rood pattern search for fast block-matching motion estimation. IEEE Trans. Image Process. 11(12), 1442–1448 (2002)
Rath, G.B., Makur, A.: Iterative least squares and compression based estimations for a four-parameter linear global motion model and global motion compensation. IEEE Trans. Circuits Syst. Video Technol. 9(7), 1075–1099 (1999)
Mcleod, P., Driver, J., Dienes, Z., et al.: Filtering by movement in visual search. J. Exp. Psychol. Hum. Percept. Perform. 17(1), 55–64 (1991)
Pereira, F., Ebrahimi, T.: The MPEG-4 Book, pp. 669–675. Prentice-Hall, Upper Saddle River (2002)
Acknowledgment
This work is sponsored by Shanghai Pujiang Program (15pjd015) and Innovation Program of Shanghai Municipal Education Commission (13ZZ069), and is supported by the National Natural Science Foundation of China under grant No. 61171084, 61172096, 61422111, U1301257, and by the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing AG
About this paper
Cite this paper
Shen, L., Hu, Q., Liu, Z., An, P. (2016). A New Rate Control Algorithm Based on Region of Interest for HEVC. In: Chen, E., Gong, Y., Tie, Y. (eds) Advances in Multimedia Information Processing - PCM 2016. PCM 2016. Lecture Notes in Computer Science(), vol 9917. Springer, Cham. https://doi.org/10.1007/978-3-319-48896-7_56
Download citation
DOI: https://doi.org/10.1007/978-3-319-48896-7_56
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48895-0
Online ISBN: 978-3-319-48896-7
eBook Packages: Computer ScienceComputer Science (R0)