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Convert PS to Tiff

Posted on 2004-10-05
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Last Modified: 2013-12-02
I am using ghostScript to convert from .PS  to .TIF format for Eng. Drawings.
It works well except I lose line weights  all the lines are converted to a single width.
In the .PS thereare destinct diffrences in line weights.
gswin32 -dBATCH -dNOPAUSE -r300x300 -sDEVICE=tiffg4  fileName
is the command line are there any other options for line widths????

Or any other way to get from .PS to .TIF ??
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Question by:MCofer
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LVL 44

Expert Comment

by:Karl Heinz Kremer
ID: 12231043
The TIFF renderer in Ghostscript is not the best - as you've found out the hard way. You may get better results when you render a 600dpi image.

The TIFF driver in Ghostscript supports two settings (MaxStripSize and AdjustWidth), but none of them would modify the way the lines are rendered.

One other option would be to use Adobe Acrobat to first convert the PostScript file to PDF and then do a Save As and select the TIFF format.

What are you using the TIFF images for? What line widths are you using?
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Author Comment

by:MCofer
ID: 12232200
The Corprate standard for drawing storage and retrival is Tif
The Drawings are created from a CAD system where the part edges are rendered thick lines ans dimenison and others are rendered as thin.
We are using GhostScript in an windows program that automates the conversion from CAD tro TIF. The CAD system will only create .PS files.

I'll try the "saveAs" tomorrow and let you know

Thanks
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LVL 44

Accepted Solution

by:
Karl Heinz Kremer earned 500 total points
ID: 12232334
I would strongly advice against storing CAD drawings as TIFF files. I understand that you probably cannot change this, but here are is some information that may help to convince whoever is in charge of this:

TIFF is a bitmap format. CAD drawings are by definition vector drawings. Converting a vector drawing into a bitmap is always a lossy conversion. You can no longer zoom into the drawing. The resolution selected at the time of conversion is all you get. TIFF images are huge in size. When you compare your TIFF image with the size of the PostScript file, you will notice that you add a huge amount of "empty space" to your document (every white pixel has to be stored).
Adobe is working with the CAD industry to promote the adoption of PDF as a long term storage and exchange format. You already have PDF support in several CAD programs. The Adobe PDFMaker is available for AutoCAD, which allows you to do a one-click PDF conversion from within your CAD app.
The PDF/A subset of PDF is an ISO standard, which means that it's not longer controlled by Adobe. You can create PDF readers even 100 years from today by just reading and implementing the standard.
Work is under way on a PDF/E standard (E for "Engineering"). PDF files are ususally a lot smaller than the PostScript files they were created from. When your drawing is converted to PDF, it's still a vector format. You can zoom in as much as you want (or as much as your PDF viewer supports), and you will never hit the pixel level.
TIFF was yesterday's format.

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