Opened 5 years ago

Closed 5 years ago

#214 closed defect (fixed)

M0147 - Mismatch of an adopted element(25 points) in VTM

Reported by: JeevaRaj Owned by:
Priority: major Milestone: VTM-4.1
Component: VTM Version: VTM-4.0
Keywords: Cc: sriram.sethuraman@…, ksuehring, XiangLi, fbossen, jvet@…


As per the meeting notes following elements of DMVR is adopted

  • Early termination w/ (0,0) position SAD between list0 and list1
  • Block sizes for DMVR W*H>=64 && H>=8
  • Split the CU into multiple of 16x16 sub-blocks for DMVR of CU size > 16*16
  • Reference block size (W+7)*(H+7) (for luma)
  • 25 points SAD-based integer-pel search (i.e. (+-) 2 refinement search range, single stage)
  • Bilinear-interpolation based DMVR
  • MVD mirroring between list0 and list1 to allow bilateral matching
  • “Parametric error surface equation” based sub-pel refinement
  • Luma/chroma MC w/ reference block padding (if needed)
  • Refined MVs used for MC and TMVPs only

In current VTM version, Adaptive Search pattern is used instead of 25 points raster scan order based exhaustive search for +/- 2 refinement.

Change history (2)

comment:1 Changed 5 years ago by JeevaRaj

comment:2 Changed 5 years ago by XiangLi

  • Resolution set to fixed
  • Status changed from new to closed
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