Extracting scanned image precisely

New Here ,
May 21, 2021 May 21, 2021

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Good afternoon

 

Hopefully I'm missing a very obvious trick here so there's an easy solution to my problem.

 

I have 600dpi scanned PDF documents of templates for a project. Note, the templates were created by drawing around the original item onto very large paper (2440x1220mm) then scanned using an industrial large format scanner. 

 

As the scanner could only scan 800mm wide, we had to slice the paper down the middle and scan the templates in two halves. 

 

I now need to join the two halves perfectly and export it as one entity as either Ai or another PDF. Is there a way of extracting these from the PDF, without using Image Trace, as it needs to be precise, therefore I'm reluctant to use the Image Trace feature? 

 

Thank you in advance.

 

R

TOPICS
Draw and design, How to, Print and publish

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Adobe Community Professional ,
May 21, 2021 May 21, 2021

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Since they were scanned, they are images.

Photoshop would be the best to stitch them together.

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New Here ,
May 21, 2021 May 21, 2021

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I only have access to Ai unfortunately. 

 

Rhys

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Adobe Community Professional ,
May 21, 2021 May 21, 2021

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What do you mean by 'extracting' here?

You can just place the images side by side on an artboard the size you require and export a single PDF.

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New Here ,
May 21, 2021 May 21, 2021

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Well, perhaps I used the incorrect terminology. 

 

The "images" are of course just line drawings, as I drew around the actual wooden templates onto paper. 

 

The trouble I'm having is that I cannot extract the line from the PDF, it has white in the background (the paper that was scanned). 

 

Is there a way of removing this line that I've drawn, and have it as it's own vector line? 

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Adobe Community Professional ,
May 21, 2021 May 21, 2021

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As a scanned line, it is just pixels. There is no vector to extract.

You can use image trace, which will attempt to make a vector copy of the image, but it probably isn't suitably accurate as you say.

Or you can redraw it with the tools in Illustrator.

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New Here ,
May 21, 2021 May 21, 2021

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Thanks for your help, I'll draw around the shape in Ai.

 

I was hoping for there to be a quicker solution, but no such luck!

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