test
server time: root: http://itiis.org
current_path: /journals/tiis/digital-library/20704
current_url: http://itiis.org/journals/tiis/digital-library/20704
Fractal Depth Map Sequence Coding Algorithm with Motion-vector-field-based Motion Estimation
  • KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Fractal Depth Map Sequence Coding Algorithm with Motion-vector-field-based Motion Estimation

Vol. 9, No. 1, January 30, 2015
10.3837/tiis.2015.01.013, Download Paper (Free):

Abstract

Three-dimensional video coding is one of the main challenges restricting the widespread applications of 3D video and free viewpoint video. In this paper, a novel fractal coding algorithm with motion-vector-field-based motion estimation for depth map sequence is proposed. We firstly add pre-search restriction to rule the improper domain blocks out of the matching search process so that the number of blocks involved in the search process can be restricted to a smaller size. Some improvements for motion estimation including initial search point prediction, threshold transition condition and early termination condition are made based on the feature of fractal coding. The motion-vector-field-based adaptive hexagon search algorithm on the basis of center-biased distribution characteristics of depth motion vector is proposed to accelerate the search. Experimental results show that the proposed algorithm can reach optimum levels of quality and save the coding time. The PSNR of synthesized view is increased by 0.56 dB with 36.97% bit rate decrease on average compared with H.264 Full Search. And the depth encoding time is saved by up to 66.47%. Moreover, the proposed fractal depth map sequence codec outperforms the recent alternative codecs by improving the H.264/AVC, especially in much bitrate saving and encoding time reduction.


Statistics

Show / Hide Statistics

Statistics (Cumulative Counts from December 1st, 2015)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.


Cite this article

[IEEE Style]
S. Zhu and D. Zhao, "Fractal Depth Map Sequence Coding Algorithm with Motion-vector-field-based Motion Estimation," KSII Transactions on Internet and Information Systems, vol. 9, no. 1, pp. 242-259, 2015. DOI: 10.3837/tiis.2015.01.013.

[ACM Style]
Shiping Zhu and Dongyu Zhao. 2015. Fractal Depth Map Sequence Coding Algorithm with Motion-vector-field-based Motion Estimation. KSII Transactions on Internet and Information Systems, 9, 1, (2015), 242-259. DOI: 10.3837/tiis.2015.01.013.