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Message-ID: <002a01c52b49$ed08efc0$82f6f8c1@gipf.cta>
From: "Pascal Peuch" <peuchpascal@wanadoo.fr>
To: <tiff@remotesensing.org>
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Date: Fri, 18 Mar 2005 00:34:54 +0100
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Subject: [Tiff] Re: Tiff file with Transparency mask (former 'Photoshop
	Masked area TIFF images')
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Yes, I do.

I am at the moment specifying a new raster map product and I intend to use 
the transparency mask for encoding the padding (void areas).

Pascal

----- Original Message ----- 
From: "Bob Friesenhahn" <bfriesen@simple.dallas.tx.us>
To: "Pascal Peuch" <peuchpascal@wanadoo.fr>
Cc: <tiff@remotesensing.org>
Sent: Thursday, March 17, 2005 11:49 PM
Subject: Re: [Tiff] Photoshop Masked area TIFF images


> On Thu, 17 Mar 2005, Pascal Peuch wrote:
>
>> Does anyone has ever seen a TIFF file with a transparency mask?
>> And do you know commercial softwares dealing with transparency masks.
>
> I assume that you are talking about an image which contains a second 
> bilevel TIFF frame with photometric set to PHOTOMETRIC_MASK (4)?
>
> Bob
> ======================================
> Bob Friesenhahn
> bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
> 


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