Optimal size

[Brian Sullivan]

Hugin has a function to produce panoramas in "optimal size". 

This seems to produce equirectangular panoramas in other then 2 to 1 aspect ratio which creates a problem for some display renderers (particularly Google+ mobile). What is the strategy used here?

[Frederic Da Vitoria]

Le 25 déc. 2012 18:14, "Brian Sullivan" <brians...@gmail.com> a écrit :
>
> Hugin has a function to produce panoramas in "optimal size". 
>
> This seems to produce equirectangular panoramas in other then 2 to 1 aspect ratio which creates a problem for some display renderers (particularly Google+ mobile). What is the strategy used here?

In my experience,  Hugin uses the aspect ratio of the panorama, not a predefined aspect ratio.

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Frederic Da Vitoria
(davitof)
Membre de l'April - « promouvoir et défendre le logiciel libre » - http://www.april.org/

[Carlos Eduardo G. Carvalho (Cartola)]

This "optimal size" doesn't have anything to do with the aspect ratio. The aspect ratio is defined by the angles and can be done visually in the fast preview window, for example. The "optimal size" is going to give you the best size in pixels of the final image according to your original images sizes.

Carlos E G Carvalho (Cartola)
http://cartola.org/360
http://www.panoforum.com.br/

2012/12/25 Frederic Da Vitoria <davi...@gmail.com>

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[memecs]

Do you know how the optimal size if estimated?

[Carlos Eduardo G. Carvalho (Cartola)]

It depends on the resolution and field of view of the original pictures. Lets us think only horizontally to simplify. Imagine a lens that has a horizontal field of view of 90 degrees and produces images with 1000 pixels wide. You will probably have to do at least 5 pictures to cover the horizontal with some overlap, but each 90 degrees will be covered by 1000 pixels, so, the whole horizontal line in a complete 360 panorama will have an optimal size of 4000 pixels (360 / 90 = 4, 4 x 1000 = 4000).

Well, that is how I think it does.

Bests,

Carlos E G Carvalho (Cartola)
http://cartola.org/360
http://www.panoforum.com.br/

2013/2/9 memecs <fedep...@gmail.com>

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[memecs]

Thanks!