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Inspiring
December 21, 2023
Answered

how to import a graphic with good quality

  • December 21, 2023
  • 7 replies
  • 835 views

Hello,

I have scanned a technical book in PDF by using Acrobat Pro.

In the scanned PDF file I have made a screenshot of this graphic :

But inside Frame Maker if I made File/Import/File, the result on the Frame maker document is not good.

What do you advise me to do in order to import graphics from this scanned PDF, with a good quality result inside Frame maker ?

This topic has been closed for replies.
Correct answer Dave Creamer of IDEAS

For line art:

1. Scan as line art or black-and-white (phrasing is scanner-software dependent)

2. Scan at 1200-1800 ppi/dpi at 100% scale. 
(If you want to double the original size, scan at 2400 ppi., etc. )
3. Save as LZW-compressed TIFF. 

 

Depending on the scanner, it will look as good as the original. 

 

7 replies

Bob_Niland
Community Expert
Community Expert
December 21, 2023

In addition to the other excellent tips so far:

  • That scanned image appears to have some bleed from content on the next page (back of sheet). Obtain some flexible flat black material (such as anti-static wrap) and apply to that back page to drive it all to black.
  • That scan needed to have a transfer function applied for higher contrast (and play with the settings after applying the drive-back-to-black trick).
  • I tend to do such scans at the optimal optical resolution of the scanner, perhaps with the page slightly rotated so that any halftone patterns don't beat against scan lines, creating avoidable artifacts.
  • Then use a raster image editor to rectify, clean up and rescale to optimal workflow resolution. Make sure the image is grayscale, and not color (unless it is color, which introduces myriad other challenges). PNG is adequate for this sort of work.
  • Make sure the FM workflow doesn't down-sample the output further.
Inspiring
December 21, 2023

In Frame maker I have made Insert/image and selected the TIFF image. So in Frame maker the result in print is OK, but it failed to export the Frame maker document to PDF (error message), and if I do an export to RTF, if I try to open the RTF it opens Microsoft Word but the image has gone in the RTF file. Why ?

Jeff_Coatsworth
Community Expert
Community Expert
December 21, 2023

Not sure RTF supports images - but anyway, what message are you getting when you try to create the PDF with the image in it? What method are you using to create the PDF?

Inspiring
December 21, 2023

In Frame maker, if I try to do File/Save as PDF, I have this error message :

 

So unable to export to PDF.

Inspiring
December 21, 2023

Hi David,

I have tried to do this :

1) - I have save my scanned PDF to TIFF.

2) - As my graphic is on page 11 of the PDF, I have used the page 11 in TIFF inside Frame maker (Insert image).

It seems to be much better than my JPEG screenshot about the lines in the graphic.

But I will try also with scanning directly to TIFF in a higher resolution.

 

Dave Creamer of IDEAS
Community Expert
Dave Creamer of IDEASCommunity ExpertCorrect answer
Community Expert
December 21, 2023

For line art:

1. Scan as line art or black-and-white (phrasing is scanner-software dependent)

2. Scan at 1200-1800 ppi/dpi at 100% scale. 
(If you want to double the original size, scan at 2400 ppi., etc. )
3. Save as LZW-compressed TIFF. 

 

Depending on the scanner, it will look as good as the original. 

 

David Creamer: Community Expert (ACI and ACE 1995-2023)
Inspiring
December 21, 2023

The screenshot on the scanned PDF file,  is made in jpeg (bitmap image).

I was thinking to another thing : in order to keep quality, do you think I could transform this bitmap image to a vector image, and how to do it with frame maker ? 

Matt-Tech Comm Tools
Community Expert
Community Expert
December 21, 2023

Scanning into line art into JPEG is a bad choice, and you can't get back detail that was thrown away in the JPEG compression. Saving as TIFF, per David's suggestion is the better way to go.

Also, there is no great way to produce vector art from poor bitmaps, but you can get amazing results from Illustrator or other software from high quality bitmaps.

-Matt Sullivan, FrameMaker Course Creator, Author, Trainer, Consultant
Community Expert
December 21, 2023

Additional question: What is the file format of your graphics file?

FrameMaker can display EPS files only with limited quality. You have to create a PDF file to get the full resolution.

I recommend this also fo other file formats.

Jeff_Coatsworth
Community Expert
Community Expert
December 21, 2023

So the image has gone from a paper image to PDF to a screenshot of the PDF? That sounds like a recipe for a degraded image. If the image isn't available as an image file in the first place, I would go from scanning the paper copy directly to an image file - that's the highest quality you're going to achieve - and then use that image file in your FM content.