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line width.png
 

line width.png


alexwi
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Line width measured with Gimp.

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PuliMorgan

Posted

@alexwi Can you please explain the procedure of the line width measurement? I was thinking about using a profile projector for one of my upcoming reviews, but the access to the instrument is limited and yours seems to be an easier method.

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alexwi

Posted (edited)

Hi @PuliMorgan!

 

I scanned the image as a pdf at 300dpi and then opened the pdf with GIMP. In this case I scanned in black and white, but you can do color or grayscale too.

 

Gimp asks at what resolution you want to import the pdf. You must indicate the same resolution that was used for scanning.

 

Then just use the measurement tool.

 

Alex

Edited by alexwi
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PuliMorgan

Posted

8 minutes ago, alexwi said:

Hi @PuliMorgan!

 

I scanned the image as a pdf at 300dpi and then opened the pdf with GIMP. In this case I scanned in black and white, but you can do color or grayscale too.

 

Gimp asks at what resolution you want to import the pdf. You must indicate the same resolution that was used for scanning.

 

Then just use the measurement tool.

 

Alex

 

OK, then it depends on the accuracy of the scanning tool. I have seen different line widths for the same text while scanning the kids's assignments using different softwares. (On an HP scanner cum printer). 

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Hmmmm.... as far as I know, scanners are pretty accurate devices, so the inconsistency you're seeing is definitely coming from the various programs you're using for scanning.

 

Even though this approach is far from scientific, scan the same original with every program that you use into pdf's, print them all out, and stick to the software that produced the truest result.

 

Some scanning programs have the ability to "enhance" the scanned image. You need those features turned off for this purpose.

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