1. 26 Oct, 2017 4 commits
  2. 25 Oct, 2017 1 commit
  3. 24 Oct, 2017 3 commits
  4. 21 Oct, 2017 1 commit
  5. 18 Oct, 2017 1 commit
  6. 17 Oct, 2017 1 commit
  7. 16 Oct, 2017 3 commits
  8. 13 Oct, 2017 1 commit
  9. 12 Oct, 2017 1 commit
    • Yue Chen's avatar
      filter_intra: make fi mode index entropy coded · 63ce36fc
      Yue Chen authored
      Make fi mode index entropy coded instead of using raw bits. Mode
      cost estimation in key-frame RDO is updated as well. Modification
      to inter frame RDO is not included in this patch.
      Also key-frame y mode cdf table is re-trained since fi modes are
      attached to DC_PRED
      
      Key frame BDRate:
      -0.399% lowres, -0.339% midres
      
      Change-Id: I9ccf478b0a2e48fb1870fe8451e45e2c858a5f63
      63ce36fc
  10. 11 Oct, 2017 2 commits
  11. 10 Oct, 2017 1 commit
    • Lester Lu's avatar
      lgt-from-pred: transforms based on prediction · 432012f6
      Lester Lu authored
      In this experiment, sharp image discontinuity in the predicted
      block is detected. Based on this discontinuity, we choose
      particular LGTs as row and column transforms.
      
      Bitstream syntax, entropy coding, and RD search for LGT are added.
      One binary symbol is used to signal whether LGT is used. This
      experiment can work independently with the lgt experiment.
      
      lowres: -0.414% for key frames, -0.151% overall
      midres: -0.413% for key frames, -0.161% overall
      
      Change-Id: Iaa2f2c2839c34ca4134fa55e77870dc3f1fa879f
      432012f6
  12. 08 Oct, 2017 1 commit
  13. 06 Oct, 2017 1 commit
    • Jingning Han's avatar
      Rework key frame intra mode context model · a45d842d
      Jingning Han authored
      Reduce the context model size for key frame modes from 30240 bits
      to 4500 bits, i.e., less than 1/6 of the original context model.
      The coding performance loss on key frame is 0.14% for lowres and
      noise level difference for video sequence. The loss on key frame
      for midres is 0.05% and noise level for whole video. The change
      on hdres kf coding is 0.015%.
      
      Change-Id: I9e36825e5c5ee6ba35038c3ca349ad1ad3429910
      a45d842d
  14. 05 Oct, 2017 2 commits
  15. 04 Oct, 2017 1 commit
    • Cheng Chen's avatar
      LOOPFILTER_LEVEL: add flexibility for EXT_DELTA_Q · 880166ab
      Cheng Chen authored
      When experiment LOOPFILTER_LEVEL is on, there're four base filter levels
      for each frame. This patch enables one to use one delta or four deltas
      to update corresponding filter levels for each superblock in
      EXT_DELTA_Q.
      
      1 bit per frame is sent through bitstream to select one or four deltas.
      Now, we hard code to use one delta.
      
      Change-Id: I9c61a035064fa81878b0575ad21664e2b22a6a45
      880166ab
  16. 03 Oct, 2017 2 commits
    • Hui Su's avatar
      Remove symbol mapping of intra modes · 814f41e7
      Hui Su authored
      The _ind and _inv mapping tables are not necessary. The CDF tables are
      updated with new values converted from the old tables. Performance
      impact is small and neutral.
      
      Change-Id: I65845ab3c80f88794abd9ab9e61494af56099c7c
      814f41e7
    • Cheng Chen's avatar
      Make LOOPFILTER_LEVEL support EXT_DELTA_Q · a97394f7
      Cheng Chen authored
      Before LOOPFILTER_LEVEL, there's one filter level,
      now we have four filter levels for y plane vertical,
      y plane horizontal, u plane and v plane.
      
      This patch enables experiment LOOPFILTER_LEVEL to support per
      superblock loop filter level update.
      
      Change-Id: Ib11a1564471eb3076c26e73e5cdf7b5a3045ef97
      a97394f7
  17. 02 Oct, 2017 4 commits
  18. 29 Sep, 2017 3 commits
  19. 28 Sep, 2017 2 commits
  20. 23 Sep, 2017 2 commits
  21. 22 Sep, 2017 2 commits
    • Hui Su's avatar
      Remove probablity model for tx type · 98b0b3e9
      Hui Su authored
      It's not being used anymore, replaced by the CDF model.
      The counters are moved under the entropy-stats experiment, so that they
      can be used to tune the default CDF values.
      
      Change-Id: I50cb170c4c8699cf7317fd77853b3fedf2342d3e
      98b0b3e9
    • Hui Su's avatar
      Refactor the ext-tx experiment · ddbcde28
      Hui Su authored
      Use common structure for inter and intra tx type information when
      possible.
      
      Change-Id: I1fd3bc86033871ffbcc2b496a31dca00b7d64b31
      ddbcde28
  22. 16 Sep, 2017 1 commit
    • Hui Su's avatar
      intrabc: replace prob with cdf · 6c8584f6
      Hui Su authored
      Improves keyframe coding by 0.1% on the screen_content testset.
      
      Change-Id: I5793a67eaae21010ef200038af99ebb9029fc770
      6c8584f6