| Color image [message #4685] |
Sun, 09 July 1995 00:00  |
jun
Messages: 9
Registered: June 1994
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Junior Member |
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Hi, more questions.
We have several images of sky, each in different band
of wavelength. Now we want to construct a color image
from these images. Does anyone have good ideas of how to
do this in IDL?
Thanks.
Jim
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| Re: Color Image [message #64445 is a reply to message #4685] |
Sat, 27 December 2008 05:25  |
justspam03
Messages: 36
Registered: October 2003
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Member |
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Hi Silvia,
if you want it a bit more comfortable, I could offer you a library of
IDL objects.
It's not published yet, as it's still beta status, but the parts you'd
need should be ok.
You'd have a display for the image, a second to display the color<-
> value coding as well as
zooming, panning, center/width change and a pixellense. The code would
look something like this:
base = widget_base(....)
display = obj_new('LLDisplay', base, 512, 512 )
contrast = obj_new('LLContrast', base )
zoom = obj_new('LLZoom')
pan = obj_new('LLPan')
pixellense = obj_new('LLPixelLense')
pan->selfregister, display, button=1
zoom->selfregister, display, button=2
contrast->selfregister, display, button=3
pixellense->selfregister, display, togglekey='p
img = ptr_new( intarr(256, 256), /no_copy )
display->setImg, img
display->display
An old version of the lib and documentation is available @
http://www.jubileum.lu.se/mrphysics/software/lib/index.htm
Let me know whether you're interested and I'll send you a copy
of the latest version.
Cheers
Oliver
The
On Dec 26, 6:01 pm, silviad...@gmail.com wrote:
> Hallo! I must display a color image, in which pixel values are
> displayed with a color between yellow, green,red and blue, on the
> basis of their value.
> How i can do that?
> Thenk you very much.
> Silvia
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| Re: Color Image [message #64447 is a reply to message #4685] |
Fri, 26 December 2008 16:42 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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silviadncl@gmail.com writes:
> Hallo! I must display a color image, in which pixel values are
> displayed with a color between yellow, green,red and blue, on the
> basis of their value.
> How i can do that?
How about something like this:
IDL> Loadct, 4
IDL> Device, Decomposed=0
IDL> TVScl, image
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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