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Archival pre-CAD drawings are valuable assets to a company. PSW offers many scanning and electronic drawing management solutions to use those assets to the full.
Raster Images
When a drawing is fed through a scanner, the page info rmation ends up as a "raster" format such as a "Tiff file" (.tif), "Bitmap" (.bmp) or "J-Peg" (.jpg). These raster images contain no intelligence. They are just a series of dots or pixels, placed upon a page. (Using version 14 of AutoCad or later, it is possible to view a Tiff picture file, but it is not possible to edit the document in any way.)
Vector Images
To take this image into a CAD package for editing, the raster data must first be converted to a "Vector" file format. This can be done using a sophisticated and specialist software package, and although this can produce good results, PSW would like to stress that the process is by no means an exact science. A vector image such as a "DXF file" contains intelligence, and knows the entities of lines, arcs, etc.
It should be noted that the standard vectorising process from PSW involves the removal of all fonts.
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