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2008.12.17 19:41 "Re: Extracting layers from a TIFF file", by Chris Cox
No, Photoshop does no such thing. Photoshop only puts channels into TIFF channels. Photoshop can save layer data in TIFF files - as a custom data blob. The layer data written into that blob matches the layer data representation in PSD and PDF. And the Photoshop SDK documents the contents of that data. Chris ________________________________________ From: tiff-bounces@lists.maptools.org [tiff-bounces@lists.maptools.org] On Behalf Of Igor Skochinsky [skochinsky@mail.ru] Sent: Wednesday, December 17, 2008 11:02 AM To: Mitesh Subject: Re: [Tiff] Extracting layers from a TIFF file Hello Mitesh, Wednesday, December 17, 2008, 1:34:24 PM, you wrote: M> Our tiff files are created in Photoshop composing of several layers (50 +) M> and then saved in a tiff file. M> Now I have to write code to separate each layer information embedded in the M> tiff file and GENERATE A SEPARATE FILE for each layer. Or in other words M> decompose the combined layers M> There is a confusion about multipage, layers and channels. M> Can somebody explain in detail what are the above? M> Do you all mean to say in Tiff layer data is stored as channels? When you export a TIFF file, Photoshop puts each layer into a separate TIFF channel. (It also writes a custom TIFF tag with some information about those layers.) So, if you split the TIFF into separate channels, you should get what you need. -- WBR, Igor mailto:skochinsky@mail.ru