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16 bit Tiff image [message #58946]

Wed, 27 February 2008 10:51

Stefano Scardigli
Messages: 7
Registered: February 2008

Junior Member

Hi all,

I'm new in using IDL and I'm using an old version too.
I have a strange problem in writing 16 bit TIFF files

this is the dump of my problem (I omitted the unuseful rows):

IDL Version 5.1 (OSF alpha). Research Systems, Inc.
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",img
IDL> print,max(img)
255
IDL> img2=read_tiff("prova.tiff",/unsigned)
IDL> print,max(img2)
255
IDL> help,img
IMG BYTE = Array[1000, 1000]
IDL> help,img2
IMG2 BYTE = Array[1000, 1000]
IDL>

as you can see the file prova.tiff is a 8 bit image and also the array img
is changed from LONG to BYTE. I tried all the parameter of the write_tiff
procedure, but nothing change

many thanks to who will help me

Stefano Scardigli

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[Message index]

		16 bit Tiff image By: Stefano Scardigli on Wed, 27 February 2008 10:51
		Re: 16 bit Tiff image By: Spon on Fri, 29 February 2008 02:09
		Re: 16 bit Tiff image By: Stefano Scardigli on Sun, 02 March 2008 02:56

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