| Mosaic [message #51426] |
Sat, 18 November 2006 22:23  |
bujji
Messages: 10
Registered: October 2005
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Junior Member |
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Hello All,
I am using IDL6.3 on windows. I am having some raw data sets. using
ENVI routines I had georeferenced the data. Now I wud like to Mosaic
the data.
How to Mosaic the data automatically using ENVI and IDL routines(the
data is georeferenced).
Please suggest me a suitable way.
Regards,
Prahlad V
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| Re: Mosaic [message #51470 is a reply to message #51426] |
Fri, 24 November 2006 09:53  |
Jean H.
Messages: 472
Registered: July 2006
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Senior Member |
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what about something like: round((X origine coord of input n - X
origine coord of output) / resolution of the ouput)
Jean
bujji wrote:
> Thanks Mr David,
>
> I cud resolve the problem for two images. If there are 'n' number of
> images then tell me generic way to define X0,Y0,POS,DIMS.
>
> Regards,
> Prahlad
>
> David Streutker wrote:
>
>> X0 and Y0 are vectors which contain the starting pixels for each of
>> your input images, with respect to the output mosaic. For example, if
>> you are mosaicking four 100 x 100 images into one 200 x 200 image,
>> then:
>>
>> X0 = [0, 0, 100, 100]
>> Y0 = [0, 100, 0, 100]
>>
>> (I can't remember if these are referenced from the upper left or lower
>> left corner.)
>>
>> POS determines which bands of the input files to include, and in what
>> order. If there are two bands in the four files listed above, use
>> something like this:
>>
>> POS = rebin(lindgen(2), 2, 4)
>>
>> print, POS
>> 0 1
>> 0 1
>> 0 1
>> 0 1
>>
>> Hope that helps,
>> David
>
>
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| Re: mosaic [message #81190 is a reply to message #51426] |
Mon, 20 August 2012 10:57 |
Russell Ryan
Messages: 122
Registered: May 2012
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Senior Member |
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On Friday, August 17, 2012 8:00:42 PM UTC-4, elliott...@gmail.com wrote:
> Any good programs to mosaic astronomy images with in IDL, windows?
>
>
>
> Trying to use Perrin's library, but getting syntax errors all over the place in his code.
Do you have trustworthy astrometry in the fits headers? If so, then you might be able to kludge something up with hastrom.pro in the IDL astro library?
-Russell
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