[Bf-vfx] Non-square shapes for pattern and search areas

[Matt Ebb]

I'm afraid I can't give very good concrete examples, but when I was doing
some 2D tracking before in Fusion, I found it quite useful to resize the
markers to be rectangular - eg. to carefully surround my region of interest,
and eliminate any extra moving detail nearby that may be confusing the
tracker.

This was a while ago and I wasn't tracking shots extensively, but I recall
it helped in that case.

cheers

Matt


On Thu, Jul 21, 2011 at 3:10 AM, Sergey I. Sharybin <g.ulairi at gmail.com>wrote:

>  Hi everyone!
>
> It was got discussion today in #lbmv at irc.freenode.net related on
> forcing pattern/search area be square.
>
> Main question: is non-square shape of marker useful in motion tracking
> workflow?
>
> Some quick cases i could think could be solved just adding offset to search
> area or by resizing this areas.  But we've checked some tracking
> applications and they allow to use non-square markers. So i'm not sure
> it'll be good idea to stick to squares.
>
> P.S. From UI point of view, search are could be rectangular, just "missing"
> areas could be filled with black when it's passing to libmv which would
> probably be optimized for squares.
>
> --
> With best regards, Sergey I. Sharybin
>
>
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