2006.01.24 07:41 "Re: [Tiff] LibTIff and Photoshop TIFF support (Multipage TIffs)", by Kai-Uwe Behrmann

The 8BIM / 37724 tag influences basically the appearance of a layer. The layerdata should be accessible by its own. So what you can get is the image data itself without layermasks, layer effects like overlay and so on.

Additional CinePaint reads and writes multilayer tiff's and Ghostscript writes multipage tiff's out of PS/PDF. Of course they, like GraficsMagic, dont support the Photoshop tag.

regards
Kai-Uwe Behrmann

                                + development for color management 
                                + imaging / panoramas
                                + email: ku.b@gmx.de
                                + http://www.behrmann.name

Am 23.01.06, 11:01 -0800 schrieb Chris Cox:

> You can¹t get access to the layer data through LibTIFF.

>
> No, there is no way.
>
> Chris
>
>
>
> On 1/23/06 8:39 AM, "Jeet Shroff" <jkshroff@gmail.com> wrote:
>

Hey Thanks Bob and Chris,

I am aware of the Photoshop layer data but I need to get access to that within the TIFF file through LibTiff.

I was wondering how to do that, since LibTIff doesn't recognize the Tag that specifies this data.

Is there any way, or has someone done this already?

Thanks

On 1/22/06, Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote:

>
Sun, 22 Jan 2006, Jeet Shroff wrote: On
>>

> > -- where can I generate or gain access to multi-page tiffs? I don't > > Also >> any program that can generate Tiffs like that for me. I've tried > know

> >>> > Photoshop and GIMP. Does anyone have regular non-layered multi-page TIFFs

>> have 2 or more images stored in them and so we can use the > that

> >>> SetDirectory

>> ReadDirectory functions in LibTiff to gain access to the different > and

> >>> image

>> for those images? > data
>

> ImageMagick and GraphicsMagick support reading and writing multi-page > TIFFs.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/