INTRA mode inheritance in 3D-HEVC


  • Observation: blocks with strong contours and one dominant direction tend to be encoded with the same Intra directional mode in Texture and Depth
  • Idea: when coding Depth, add the co-located Intra mode to the Most Probable Mode list when a dominant direction is detected
  • Dominant direction is revealed by the presence of a single peak in the histogram of the gradient angle for the current block
  • The Dominant angle revealed to be an effective feature for detecting blocks were inheritance givesimprovement. It is based on the detection
    of a single peak in the gradient angle histogram
  • Inserting the inherited mode in the MPM list allows an average coding rate reduction of ≈1%,
    tests performed over MPEG sequences under Common Test Conditions


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