Opened 4 months ago
Closed 2 months ago
#555 closed defect (fixed)
Issues of the parameters of deblocking filter in the specification text
Reported by: | XieFuchun | Owned by: | |
---|---|---|---|
Priority: | minor | Milestone: | |
Component: | spec | Version: | VVC D6 vE |
Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
In 8.8.3.6.1 Decision process for luma block edges,
the sentence: “The sample values pi,k and qj,k with i = 0..maxFilterLengthP, j = 0..maxFilterLengthQ and k = 0 and 3 are derived as follows:” should be updated to “The sample values pi,k and qj,k with i = 0..max(2, maxFilterLengthP) , j = 0..max(2, maxFilterLengthQ) and k = 0 and 3 are derived as follows:”.
Otherwise, for the case CU 4x4, maxFilterLengthP = 1 and maxFilterLengthQ= 1, the obtained results for the equations (8-1066), (8-1067), (8-1068), and (8-1069) are wrong, and so the final decision for the luma deblocking process is not good. Please check it.
Change history (3)
comment:1 Changed 4 months ago by XieFuchun
- Version changed from VVC D6 vC to VVC D6 vE
comment:2 Changed 3 months ago by Kenneth
Good catch. Agree to the suggestion.
comment:3 Changed 2 months ago by bbross
- Resolution set to fixed
- Status changed from new to closed
Thanks for reporting.
This will be fixed JVET-P2001-vC.
In 8.8.3.6.1 Decision process for luma block edges,
the sentence: “The sample values pi,k and qj,k with i = 0..maxFilterLengthP, j = 0..maxFilterLengthQ and k = 0 and 3 are derived as follows:” should be updated to “The sample values pi,k and qj,k with i = 0..max(2, maxFilterLengthP) , j = 0..max(2, maxFilterLengthQ) and k = 0 and 3 are derived as follows:”.
Otherwise, for the case CU 4x4, maxFilterLengthP = 1 and maxFilterLengthQ= 1, the obtained results for the equations (8-1077), (8-1078), (8-1079), and (8-1080) are wrong, and so the final decision for the luma deblocking process is not good. Please check it.