KFJ authored a post on using the sun and Wolfram Alpha to orient panoramas
about 6 months to a year ago. I wasn't able to find it, but I'm sure
someone who knows how to use the features of the site better than me can
find it.
On Monday, November 19, 2012 4:31:51 PM UTC-6, Cartola wrote:
>
> Hmm, I don't know if I got it. Maybe is my bad English. It is able to know
> where the north is? Is it? To give the correct direction of the picture?
>
> Well, it is probably very simple to make the same line to linux and mac
> (which is a BSD and can handle shell scripts), but the problem is that I
> don't know BAT files very well :) so I also didn't get exactly what does
> this line do:
>
> for /f %%a in ('exiftool -m -c "%%+.4f" -d "%%d.%%m.%%Y+%%H:%%M:%%S" -p "
> http://www.wolframalpha.com/input/?i=sun+position+$DateTimeOriginal+at+$GPSLatitude+N+$GPSLongitude+E";
>
> %1') do @start %%a
>
> Anyway, nice job!
>
>
> Carlos E G Carvalho (Cartola)
> http://cartola.org/360
> http://www.panoforum.com.br/
>
>
>
> 2012/11/19 Erik Krause <[email protected] <javascript:>>
>
>> Hello,
>>
>> ever had trouble to find correct heading for your panorama? If it is shot
>> outdoor the sun might give you an exact value.
>>
>> One or the other might know of the possibility to use wolfram alpha to
>> calculate the sun position for given GPS coordinates and time. Since
>> entering all the values manually is too tedious I wrote a small windows
>> batch file that extracts the relevant data from an image using exiftool,
>> creates a suitable URL and calls wolfram alpha.
>>
>> All you need is to install exiftool from
>> http://www.sno.phy.queensu.ca/**~phil/exiftool/<http://www.sno.phy.queensu.ca/%7Ephil/exiftool/>
>> (could well be you have this already, f.e. if you use geosetter)
>> and the little batch file from
>> http://erik-krause.de/ttt/#**wolfram%20alpha%20azimuth<http://erik-krause.de/ttt/#wolfram%20alpha%20azimuth>
>>
>> The downloaded zip contains a readme (both in english and german) with
>> instructions how to install and use.
>>
>> Your image must contain valid GPS data and shooting date and time. So you
>> need to geotag your images before you upload them to 360cities, which is
>> beneficial anyway, since 360cities will read and use those data. A good
>> program for that is geosetter.
>>
>> Sorry, windows only for the time being. Perhaps someone can make a mac or
>> linux version, too. It's one simple command line for exiftool...
>>
>> If you have problems, suggestions or bug reports, don't hesitate to
>> contact me. I'd be curious whether it works for the southern and western
>> hemisphere as well.
>>
>> Sorry for crossposting.
>> --
>> Erik Krause
>> http://www.erik-krause.de
>>
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>
>
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