ExifTool Forum

ExifTool => The "exiftool" Application => Topic started by: diuming on March 26, 2020, 05:07:24 AM

Title: Alpha Channels's titles in TIFF?
Post by: diuming on March 26, 2020, 05:07:24 AM
I have a TIFF file is CMYK + 3 alpha channles.
Can I setting alpha channels's titles in the TIFF file using exiftool than photoshop can show each alpha channel's title.
thx.

Title: Re: Alpha Channels's titles in TIFF?
Post by: Phil Harvey on March 26, 2020, 07:40:37 AM
Great,

It may be helpful to others if you could give a concrete example of a command that you used.

- Phil
Title: Re: Alpha Channels's titles in TIFF?
Post by: diuming on March 26, 2020, 09:05:22 PM
reexplanation

I have an TIFF Image that composed of CMYK + 3 alpha channels.
Can I add a name for each alpha channel?
please! refer to following, thanks

Example
---- XMP-photoshop ----
Color Mode                      : CMYK
---- IPTC ----
Application Record Version      : 0
---- Photoshop ----
IPTC Digest                     : e8f15cf32fc118a1a27b67adc564d5ba
Print Info 2                    : ...printOutput.PstSbool.InteenumInteClrm.printSixteenBitbool.printerNameTEXT..printProofSetupObjc.P roof Setup.proofSetup.Bltnenum.builtinProof.proofCMYK
Print Style                     : ...printOutputOptions.CptnboolClbrboolRgsMboolCrnCboolCntCboolLblsboolNgtvboolEmlDboolIntrboolBckgO bjc.RGBC.Rd  doub@o‡Grn doub@o‡Bl  doub@o‡BrdTUntF#RltBld UntF#RltRsltUntF#Pxl@v.ÎÄ.vectorDatabool.PgPsenumPgPsPgPCLeftUntF#RltTop UntF#RltScl UntF#Prc@Y.cropWhenPrintingbool.cropRectBottomlong.cropRectLeftlong.cropRectRightlong.cropRectToplong
X Resolution                    : 359.99
Displayed Units X               : inches
Y Resolution                    : 359.99
Displayed Units Y               : inches
Print Style                     : Centered
Print Position                  : 0 0
Print Scale                     : 1
Alpha Channels Names            : Spot Color 1, Alpha 3, Alpha 4
Unicode Alpha Names             : .Spot Color 1.Alpha 3.Alpha 4
Display Info                    : .34ôô34..RRœœ¿¿..RRœœ¿¿.
Alpha Identifiers               : ...
Alternate Spot Colors           : .....“Ó..∑
Background Color                : ˇˇˇˇˇˇ
Global Angle                    : 90
Global Altitude                 : 30
Print Flags                     : 0 0 0 0 0 0 0 0 1
Print Flags Info                : ..
Color Halftoning Info           : /ff.lff../ff.°ôö..2.Z..5.-..
Color Transfer Funcs            : ˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ.ˡˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ.ˡˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ.ˡˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇˇ.Ë
Spot Halftone                   : ...
Grid Guides Info                : ..@.@
URL List                        :
Slices Group Name               : bands
Num Slices                      : 1
Pixel Aspect Ratio              : 1
ICC Untagged                    : 1
IDs Base Value                  : 6
Photoshop Thumbnail             : (Binary data 2601 bytes, use -b option to extract)
Has Real Merged Data            : Yes
Title: Re: Alpha Channels's titles in TIFF?
Post by: Phil Harvey on March 26, 2020, 09:50:57 PM
I see.  Unfortunately, those tags are not writable by ExifTool (see here (https://exiftool.org/TagNames/Photoshop.html)).

- Phil
Title: Re: Alpha Channels's titles in TIFF?
Post by: diuming on March 27, 2020, 02:47:19 AM
thanks for reply.

Is there a chance using Adobe XMP Toolkit SDK to read, write, and update?
thanks
Title: Re: Alpha Channels's titles in TIFF?
Post by: StarGeek on March 27, 2020, 02:50:54 AM
As those tags are part of the Photoshop group and not the XMP group, I would doubt that the XMP toolkit would be able to change them.