Re: [hugin-ptx] Creating a planet, how to best hide the camera?

[Emad ud din Butt]

You can take handheld shot with tripod removed. Hugin will automatically
remove tripod from scene or you can use hugin mask feature. If you have
ultrawide angle lens like 10mm than it will be very easy. But shoot at least
5 images. REMEMBER if your nadir is not alligned it will disturb whole
panorama allignment.

I only have 38mm lens and its really difficult to make nadir and zenith. But
I have found a very nice way of doing it.

   1. I manually stitch nadir and zenith in GIMP or Photoshop.
   2. First stitch panorama with hugin in 360 x 180.
   3. Now load it in GIMP.
   4. Goto Filters > distort > polar coordinates
   5. Now you will see your panorama in Planet view. (This method is
   basically used for making planets. But I have hacked it for nadir zenith
   stitch :)
   6. Now you will see black hole in center of panorama. You can place
   zenith or nadir there. You have to use little post processing here. No pains
   no gains :))
   7. Now goto polar coordinates and convert it back to equirectangular
   projection.

IT Can be lot easier if your dear developers add viewpoint correction
feature like PTgui in Hugin. For Nadir you move back a little from tripod.
Take a shot of nadir with camera tilted down and than in PTgui add view
point correction for only that picture

and if you have tripod option like Nicolas post than its simple way of do
it.

I hope it helps. If anybody has other tips please share. As I have to learn
it hard way. Its good to share so that other people dont have to waste time.




On Fri, Jul 9, 2010 at 6:58 AM, Nicolas Pelletier <
nicolas.pellet...@gmail.com> wrote:

Hi,
>
> For how to shoot the Nadir image, there are many ways. I use something
> similar to what is described here:
> http://www.rosaurophotography.com/html/technical6.html
>
> The most important thing is to test it and be sure you can place the camera
> the closest to it's npp.
>
> As for the shadows... position the nadir shot to avoid them, and
> gimp\photoshop them out :P
>
> Good shooting!
>
> nick
>
>
> On Thu, Jul 8, 2010 at 2:24 PM, Torsten Mohr  wrote:
>
> Hi,
>>
>> in the gallery there are some amazing panorama photos created with
>> hugin.
>>
>> I understand that i need the normal set of photos to create a "normal"
>> panorama
>> picture PLUS one or more photos of the ground.
>>
>> This is where the tripod stands and / or the sun casts a shadow of the
>> camera
>> and its operator.
>> I wonder what is the best technique to get a photo of the ground, to
>> hide the tripod
>> and to not have a shadow of the camera and its operator?
>>
>>
>> Thanks for any hints,
>> Torsten.
>>  --
>> You received this message because you are subscribed to the Google Groups
>> "hugin and other free panoramic software" group.
>> A list of frequently asked questions is available at:
>> http://wiki.panotools.org/Hugin_FAQ
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>>
>
> --
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>


-- 
_
Emaad
www.flickr.com/emaad

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Re: [hugin-ptx] Creating a planet, how to best hide the camera?

[Nicolas Pelletier]

Hi,

For how to shoot the Nadir image, there are many ways. I use something
similar to what is described here:
http://www.rosaurophotography.com/html/technical6.html

The most important
thing is to test it and be sure you can place the camera the closest to it's
npp.

As for the shadows... position the nadir shot to avoid them, and
gimp\photoshop them out :P

Good shooting!

nick

On Thu, Jul 8, 2010 at 2:24 PM, Torsten Mohr  wrote:

> Hi,
>
> in the gallery there are some amazing panorama photos created with
> hugin.
>
> I understand that i need the normal set of photos to create a "normal"
> panorama
> picture PLUS one or more photos of the ground.
>
> This is where the tripod stands and / or the sun casts a shadow of the
> camera
> and its operator.
> I wonder what is the best technique to get a photo of the ground, to
> hide the tripod
> and to not have a shadow of the camera and its operator?
>
>
> Thanks for any hints,
> Torsten.
>
> --
> You received this message because you are subscribed to the Google Groups
> "hugin and other free panoramic software" group.
> A list of frequently asked questions is available at:
> http://wiki.panotools.org/Hugin_FAQ
> To post to this group, send email to hugin-ptx@googlegroups.com
> To unsubscribe from this group, send email to
> hugin-ptx+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/hugin-ptx

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Re: [hugin-ptx] Re: Hugin for games

[Hal V. Engel]

On Thursday 08 July 2010 12:13:34 pm cri wrote:
> On 5 Lug, 08:52, David Haberthür  wrote:
> > Hey Christian
> >
> > > I've used Hugin to make some equirectangular 360x180 panorama from
> > > within some videogames (most racing and flight simulators, my
> > > favourite kind of videogames). Just would like to share them if you
> > > are
> > > interested:http://www.flickr.com/search/?q=panogame&w=39174608%40N04
> >
> > They look very interesting, great idea. Did you take the screenshots by
> > hand while looking in the different directions or did you automate the
> > process?
> 
> I thought of automating the process (in particular for Flightgear that
> is very customizable with xml) but I've almost zero knowledge on
> programming so they were taken "by hand"

In FlightGear you can pause the simulation (use the p key) but you can still 
do things like pan or zoom your view or change the view position.  So taking a 
set of screen shots for a panorama "by hand" is a fairly simple process.  But 
automating it should be fairly simple as well at least for someone with some 
programming experience.  But I think this would require using nasal rather 
than XML although you would use XML to map a key or button to the nasal 
script.

> 
> > > From a technical point of view, I noticed that autopano-sift-C had a
> > > lot of problem getting the control points right so I ended up by
> > > identifying them manually most of the time.
> >
> > This might be because there's no real lens information from your
> > screenshots. Did you play around with the "Lens Type" to see what
> > difference that makes? Greetings, Habi
> 
> No, I've just inserted, when requested from Hugin, a FOV that was
> reasonable. In a couple of cases was only needed the assistant tab.
> 
> Regards
> Cristian
> 

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[hugin-ptx] Creating a planet, how to best hide the camera?

[Torsten Mohr]

Hi,

in the gallery there are some amazing panorama photos created with
hugin.

I understand that i need the normal set of photos to create a "normal"
panorama
picture PLUS one or more photos of the ground.

This is where the tripod stands and / or the sun casts a shadow of the
camera
and its operator.
I wonder what is the best technique to get a photo of the ground, to
hide the tripod
and to not have a shadow of the camera and its operator?


Thanks for any hints,
Torsten.

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[hugin-ptx] Re: Hugin for games

[cri]

On 5 Lug, 08:52, David Haberthür  wrote:
> Hey Christian
>
> > I've used Hugin to make some equirectangular 360x180 panorama from
> > within some videogames (most racing and flight simulators, my
> > favourite kind of videogames). Just would like to share them if you
> > are interested:http://www.flickr.com/search/?q=panogame&w=39174608%40N04
>
> They look very interesting, great idea. Did you take the screenshots by hand 
> while looking in the different directions or did you automate the process?

I thought of automating the process (in particular for Flightgear that
is very customizable with xml) but I've almost zero knowledge on
programming so they were taken "by hand"

>
> > From a technical point of view, I noticed that autopano-sift-C had a
> > lot of problem getting the control points right so I ended up by
> > identifying them manually most of the time.
>
> This might be because there's no real lens information from your screenshots. 
> Did you play around with the "Lens Type" to see what difference that makes?
> Greetings, Habi

No, I've just inserted, when requested from Hugin, a FOV that was
reasonable. In a couple of cases was only needed the assistant tab.

Regards
Cristian

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