convert raster image to pantone color

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Steve-O
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Joined: Thu Aug 30, 2018 4:19 pm

convert raster image to pantone color

Post by Steve-O » Mon Apr 19, 2021 6:21 pm

I want to convert a raster image in a pdf file to a pantone color. Not having any luck. I end up with a screened background.
Hope someone can give me a solution... or a step by step process. I am attaching the file I want to convert to reflex blue.
2021 Tax Envelope.jpg
2021 Tax Envelope.jpg (203.67 KiB) Viewed 984 times
I tried to attach the pdf but was warned it was invalid. Converted it to jpg.

jslater
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Joined: Fri Oct 14, 2011 7:35 pm

Re: convert raster image to pantone color

Post by jslater » Mon Apr 19, 2021 7:25 pm

I tried adding a trace path, then filling that with reflex blue. I think it looks good, but I didn't tweak the settings at all. Do you think that would work for you?

abailescollins
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Re: convert raster image to pantone color

Post by abailescollins » Mon Apr 19, 2021 9:22 pm

Try using a curve on the image first.

Not sure if it's a bitmap or a grayscale image, maybe you can lose the background by blowing it out with a curve first?
PitStop Product Manager @ Enfocus.
andrewb@enfocus.com

bens
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Joined: Thu Mar 03, 2011 10:13 am

Re: convert raster image to pantone color

Post by bens » Tue Apr 20, 2021 11:56 am

The ideas of both jslater and abailescollins could work quite well, depending on your needs. Here's another option.

* If the image is ICC tagged, untag it.
* Turn colour management off.
* Convert the image to Gray.
* Remap (not convert) the image to the spot colour.
* If desired, use a curve or change the contrast to clean up the image.

Steve-O
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Posts: 11
Joined: Thu Aug 30, 2018 4:19 pm

Re: convert raster image to pantone color

Post by Steve-O » Mon Apr 26, 2021 8:01 pm

Please explain the curve idea. Not something I understand.
I solved my problem (although I don't know if I did it efficiently) I exported the raster image to a jpg then traced the raster image in Illustrator and saved as a pdf. During that process no background screen artifact appeared, so I was good to go with replacement and colorization.

Sure would be helpful if the correct procedure were posted so that a challenged individual like myself could have a step-by-step to properly convert a raster image's color. I had trouble finding finding this conversion and color assignment anywhere in the user documentation.

abailescollins
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Re: convert raster image to pantone color

Post by abailescollins » Mon Apr 26, 2021 9:04 pm

it would be something like this.
The curve Action at the end applies to 'other' so everything apart from CMYK
Actionlist and Sample PDF.zip
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Actionlist and Sample PDF.zip
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PitStop Product Manager @ Enfocus.
andrewb@enfocus.com

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