On January 4, 2011 02:25:52 am Rogier Wolff wrote:
> On Sun, Jan 02, 2011 at 10:15:30PM -0500, Yuval Levy wrote:
> > On January 2, 2011 06:35:02 pm Bruno Postle wrote:
> > > I see very little value in a wizard that asks you a number of rows
> > > and columns, this will only add complication to the GUI and won't
> > > help a significant proportion of people who do seriously large
> > > panoramas.
> > 
> > and yet there is demand for that?
> 
> People think that hugin can use that information. While in fact, it's
> next to useless.
> 
> You have done the "measurements" to determine that sharing the "Sigma
> 8mm lens" calibration data is "next to useless". Others know that
> telling hugin howmany rows there are is useless.

Actually I know that telling hugin how many rows there are is useless as well 
- at least for my projects.  But I don't claim that the universe of possible 
uses is limited to my projects and if people have done the "measurements" to 
determine that telling hugin how many rows there are is useful for them, why 
should I stand in their way?

 
> You could base an "initial preview" on this information, but hopefully
> we'll be able to do that without this info anyway.

Actually there is one much more important thing that can and should be based 
on this information:  optimization.  It happened to me many times in the past 
that when I optimized a project from an all images at 0,0 position the 
optimizer fell into a local minima and the result was useless.  On the other 
hand, with the images distributed approximately, the optimizer never failed 
me.

 
> Why do people think it's useful? Because they think [...]

from experiences like mine above.  It was in my intense spherical shooting 
days.  I was shooting three or six around with a modified/tilted pano head 
[0].  Just distributing the input images blindly along the horizon made a 
different between a bad optimization and a successful one.

It may be a relic of the past, and the tools are now more robust than ever, 
and the "grid" may not be necessary anymore.  But it has other advantages that 
will never go away, such as visual inspection of the input images before they 
are fed to the CP generator and to the optimizer, to make sure there are no 
duplicate images, redundant images of some sort, missing images, etc.

All of this would be part of the Images Browser (or Images Tab), and 
completely optional.

Yuv

[0] http://www.photopla.net/wwp0506/index.php

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