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Hello Everyone:
I am doing experiments to try to recover the focal length of the
perspective camera,for illustration,I do some experiments on the image
sequences generated by POV.
here is my camera: it is translating along the axis +x,always look at
a fixed point <0,0,1>,always set the horizontal view angle to 53;
//===============================================
camera {
location <0, 0, -16>
right x
up y
translate x*(clock*6)
look_at <0,0,1>
angle 53
}
//.............
//.............
So,I would like to ask whether the camera focal length of the
result sequence equals 1 in every image frame. if not,how can i get such a
image sequence then?Thanks!
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From: Alain
Subject: Re: Can I get a Camera with Fixed Focal length =3D1 like this?
Date: 30 Dec 2005 12:22:49
Message: <43b56ce9$1@news.povray.org>
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jiangzhijun nous apporta ses lumieres en ce 2005-12-30 04:42:
> Hello Everyone:
> I am doing experiments to try to recover the focal length of the
> perspective camera,for illustration,I do some experiments on the image
> sequences generated by POV.
> here is my camera: it is translating along the axis +x,always look at
> a fixed point <0,0,1>,always set the horizontal view angle to 53;
> //===============================================
> camera {
> location <0, 0, -16>
> right x
> up y
>
> translate x*(clock*6)
> look_at <0,0,1>
> angle 53
> }
> //.............
> //.............
> So,I would like to ask whether the camera focal length of the
> result sequence equals 1 in every image frame. if not,how can i get such a
> image sequence then?Thanks!
>
>
That camera DON'T have a focal lenght! It's similar to a pinn hole camera: infinite
focal deeph. It
does have a field of view that you set at 53 degrees and that field of view will never
change unless
you specificaly change the angle.
--
Alain
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