TR2013-034

Screen Content Coding for HEVC Using Edge Modes


    •  Hu, S.; Cohen, R.A.; Vetro, A.; Kuo, C.C.J., "Screen Content Coding for HEVC Using Edge Modes", IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), May 2013.
      BibTeX Download PDF
      • @inproceedings{Hu2013may,
      • author = {Hu, S. and Cohen, R.A. and Vetro, A. and Kuo, C.C.J.},
      • title = {Screen Content Coding for HEVC Using Edge Modes},
      • booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
      • year = 2013,
      • month = may,
      • url = {http://www.merl.com/publications/TR2013-034}
      • }
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  • Research Area:

    Digital Video


In this work, a new coding tool called Edge Mode is proposed for HEVC intra coding, aimed at improving coding efficiency for screen content video. A set of edge modes that correspond to edge positions are identified based upon intra prediction directions. Then, a simplified scheme is developed to select the best edge mode. To avoid applying a transform over strong edges, directional 2D separable transforms are applied to blocks partitioned using these edge modes. Experimental results show that HEVC with edge modes (HEVC/EM) can achieve up to an 18% reduction in bit-rate as compared to unmodified HEVC, with an average reduction of 10.4% for screen content video sequences.