Opened 6 years ago
Closed 6 years ago
#82 closed defect (fixed)
Zeroing-out of high frequency transform coefficients for large TUs (> 32x32) is missing in the spec
| Reported by: | zhou | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | VVC D2 v7 |
| Component: | spec | Version: | VVC D2 v5 |
| Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
According to the VTM2.0.1 and the related the reference software of adopted transform proposal, non-zero coefficients are kept only for the top-left 32x32 region of large TUs. Please refer to xTrMxN_EMT() in TrQuant.cpp of VTM2.0.1 for detail.
This zeroing-out can effectively reduce the intermediate buffer for 64x64 TUs by half.
Change history (4)
comment:1 Changed 6 years ago by bbross
- Version set to VVC D2 v4
comment:2 Changed 6 years ago by bbross
- Version changed from VVC D2 v4 to VVC D2 v5
comment:3 Changed 6 years ago by bbross
- Milestone set to VVC D2 v7
comment:4 Changed 6 years ago by bbross
- Resolution set to fixed
- Status changed from new to closed
fixed in VVC D2 v7
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Can anyone provide draft text to align the spec with VTM?