[tig] Vertical banding in HD
David L. Tosh
Mon Sep 29 18:19:27 BST 2003
At 7:03 PM +0200 9/29/03, Javier Lopez - Madrid Film wrote:
> By the way can anybody explain me difference between HD "P" formats
>and "PsF" formats?
Both "P" progressive and "PsF" progressive segmented frame pictures
are the same. Both are true progressive scan pictures. The difference
is a transmission and storage trick: the progressive frame is
segmented into even and odd scan lines and placed in an "interlaced"
pair of fields. No vertical filtering is applied, no change takes
place to the actual picture, it is just conveyed in a manner that
makes it compatible with display on a CRT monitor and with certain
The process is completely reversible so that you can always recover
the original progressive frame for further processing.
<dlt at earthlink.net>
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