Opened 6 years ago

Closed 5 years ago

#1499 closed defect (fixed)

Equation 8-47 in v5 spec was inadvertently changed from v4 spec

Reported by: RyanLei Owned by:
Priority: minor Milestone: v5
Component: Text Version: v5 (02/2018)
Keywords: Cc: jill.boyce@…, bbross, wjhan, jct-vc@…

Description

In the v5 spec, equation 8-47, for dcVal calculation, neighboring predicted pixels are summed up and right shifted by (k-1) bits. It seems to be a mistake caused by formatting. Correct operation should be right shift by (k+1) bits. The same equation in v4 spec is correct. Reference code implementation is correct.

Change History (1)

comment:1 Changed 5 years ago by crosewarne

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

Confirmed fixed in H.265 (11/19).

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  • Benjamin Bross(Subscriber)
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  • Karsten Suehring(Always)
  • Woo-Jin Han(Subscriber)
  • Zhijun (Ryan) Lei(Reporter)