Opened 4 years ago
Closed 4 years ago
#831 closed defect (invalid)
alf_cc_cb_mapped coeff_abs and alf_cc_cb_mapped coeff_abs unbounded
Reported by: | zhou | Owned by: | |
---|---|---|---|
Priority: | minor | Milestone: | |
Component: | spec | Version: | VVC D7 vD |
Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
In the spec text of the newly adopted CCALF (JVET-Q2001-v9), the values of CCALF filter coefficients are unbounded. Based on the meeting decision, the CCALF filter coefficients should be in the range of [-64:64]. It is suggested to add the following constraints:
1) in semantics of alf_cc_cb_mapped_coeff_abs[ k ][ j ], add
The value of alf_cc_cb_mapped_coeff_abs[ k ][ j ] shall be in the range of 0 to 7, inclusive.
2) in semantics of alf_cc_cr_mapped_coeff_abs[ k ][ j ], add
The value of alf_cc_cr_mapped_coeff_abs[ k ][ j ] shall be in the range of 0 to 7, inclusive.
Change history (3)
comment:1 Changed 4 years ago by fbossen
comment:2 Changed 4 years ago by zhou
yes, just realized that. So this case is invalid.
comment:3 Changed 4 years ago by fbossen
- Resolution set to invalid
- Status changed from new to closed
alf_cc_cb_mapped_coeff_abs and alf_cc_cr_mapped_coeff_abs are coded as u(3). That should be sufficient to bound them to 0..7?