Opened 13 years ago

Last modified 12 years ago

#524 closed defect

transform issues — at Initial Version

Reported by: bbross Owned by: bbross
Priority: major Milestone: D8
Component: Text Version: D7 (I1003) d9
Keywords: Cc: bbross, wjhan, jct-vc@…

Description

1.
Horizontal (row) inverse transform is carried out first and then vertical (column) inverse transform. HM does the opposite – column inverse transform first and then row inverse transform. Our understanding is that the HM reflects the intended design.

2.
Core transform matrix shown 8-285 is the wrong (forward rather than inverse) transform matrix. Inverse transform matrix needs to be used instead.

3.
Decision: (editorial, not relating I0428) The DST in DIS should be described in the form of matrix multiply

Change History (0)

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