Opened 10 years ago

Closed 10 years ago

#216 closed defect (fixed)

Bug in Alpha bits of chroma from luma mode

Reported by: jlchen Owned by:
Priority: minor Milestone:
Component: HM Version: HM-4.0
Keywords: chroma from luma mode Cc: frank, fbossen, ksuehring, davidf, jct-vc@…

Description

In the current implementation, when (alpha >63 or <=-64), the is down-scaled with
"a = a >> (6-n);" (On Line 1434 @ TComPrediction.cpp )
This operation should be replaced by "a = a >> (9-n);"

With this bug fix, Around Avg. -0.5% uv BD rate saving is achieved.

Change History (5)

comment:1 Changed 10 years ago by fbossen

Fixed in r1415

comment:2 Changed 10 years ago by fbossen

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

comment:3 Changed 10 years ago by davidf

  • Component set to HM

Updating component after adding WD (Text) tickets

comment:4 Changed 10 years ago by davidf

  • Cc fbossen ksuehring davidf added

comment:5 Changed 10 years ago by davidf

  • Cc jct-vc@… added
Note: See TracTickets for help on using tickets.

This list contains all users that will be notified about changes made to this ticket.

These roles will be notified: Reporter, Owner, Subscriber, Participant

  • David Flynn(Subscriber, Participant)
  • Frank Bossen(Subscriber, Participant)
  • jct-vc@…(Subscriber)
  • Jianle Chen(Reporter)
  • karl.sharman@…(Always)
  • Karsten Suehring(Subscriber, Always)