comp.lang.idl-pvwave archive: archive » Re: 16 bit Tiff image

Home » Public Forums » archive » Re: 16 bit Tiff image

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: 16 bit Tiff image [message #58934 is a reply to message #58931]

Wed, 27 February 2008 15:12

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Stefano Scardigli writes:

> better, thanks:
>
> IDL> img=read_tiff("V13A5.00.tif",/unsigned)
> IDL> help,img
> IMG LONG = Array[1000, 1000]
> IDL> print,max(img)
> 65535
> IDL> write_tiff,"prova.tiff",fix(img),/SHORT <---------
> IDL> help,img
> IMG LONG = Array[1000, 1000]
> IDL> print,max(img)
> 65535
> IDL> img2=read_tiff("prova.tiff",/unsigned)
> IDL> help,img2
> IMG2 LONG = Array[1000, 1000]
> IDL> print,max(img2)
> 255
>
> and now both img and img2 are LONG, but the reloaded img2 is still shrunk
> to 255 levels (ie 8 bit)!

I still don't think so. Are you being *very*
careful with your variables? You might try using
a .reset after you write the file and before you
read it again. I think it is not possible to get
what you are getting. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Report message to a moderator

[Message index]

		Re: 16 bit Tiff image By: Andrew Cool on Thu, 28 February 2008 00:09
		Re: 16 bit Tiff image By: Stefano Scardigli on Wed, 27 February 2008 23:01
		Re: 16 bit Tiff image By: Stefano Scardigli on Wed, 27 February 2008 22:52
		Re: 16 bit Tiff image By: Jean H. on Wed, 27 February 2008 15:45
		Re: 16 bit Tiff image By: David Fanning on Wed, 27 February 2008 15:12
		Re: 16 bit Tiff image By: Stefano Scardigli on Wed, 27 February 2008 15:03
		Re: 16 bit Tiff image By: David Fanning on Wed, 27 February 2008 13:26
		Re: 16 bit Tiff image By: Jean H. on Wed, 27 February 2008 13:01
		Re: 16 bit Tiff image By: Stefano Scardigli on Wed, 27 February 2008 12:32
		Re: 16 bit Tiff image By: David Fanning on Wed, 27 February 2008 11:12
		Re: 16 bit Tiff image By: Stefano Scardigli on Thu, 28 February 2008 23:34

Previous Topic:	Posting html form data with idlNetURL?
Next Topic:	AX and AZ keywords of iSurface and iVolume

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 04:05:43 PDT 2025

Total time taken to generate the page: 1.03876 seconds