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| Re: How can I check an image loaded correctly into matlab? [message #82445 is a reply to message #82364] |
Mon, 10 December 2012 10:54  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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rryan@stsci.edu writes:
> Now, displaying such a beast may be another problem. I'd use imdisp.pro (download it on the www) to display images (I'm an astronomer and that seems to be the best bet for me). But, it won't know what to do with an image that 7 extensions --- it can only handle RGB data. Now if you truly have 7 colors, then you'll need to find some other way of displaying that. If you find something useful for that in IDL, then please let me know! I'd love to have that in my
toolbox...
With cgImage I would do something like this:
cgImage, image[*,*,[6,2,1]], Stretch='clip'
I presume something similar can be done with ImDisp.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
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| Re: How can I check an image loaded correctly into matlab? [message #82447 is a reply to message #82364] |
Mon, 10 December 2012 09:42 |
Russell Ryan
Messages: 122
Registered: May 2012
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Senior Member |
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As far as I know IDL doesn't have a limit on the size of the image/data to store. Well, I guess you can only store up to as much memory you have and/or bits to address --- a 32 bit computer will only hold around 2 Gb per data array. Your size (12689,4562,7) should be fine. If it's floating point numbers, then it'll be around 2 Gb. So you need a 64 bit computer with more than 2 Gb of RAM and you should be fine.
Now, displaying such a beast may be another problem. I'd use imdisp.pro (download it on the www) to display images (I'm an astronomer and that seems to be the best bet for me). But, it won't know what to do with an image that 7 extensions --- it can only handle RGB data. Now if you truly have 7 colors, then you'll need to find some other way of displaying that. If you find something useful for that in IDL, then please let me know! I'd love to have that in my toolbox...
Good luck,
Russell
On Monday, December 10, 2012 5:34:05 AM UTC-5, Dry in water wrote:
> Hello all ,
>
>
>
> I have 2 questions for you gyus.
>
> 1. How can I check an image loaded correctly into matlab?
>
> 2. How big image can be displayed in matlab? It is possible to display huge images like (12689,4562,7).
>
>
>
> Thanks a lot
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