JSANCHEZ, LLC
Paper drawings in, digital drawings
out…
10420
Arthur Place, Suite 100
St. Louis, Missouri 63131
Phone: (314)-567-7779
Fax: (314)-567-3412
Email: sanchez@jsanchez.com
Unedited monochrome
raster imamge
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Level 1
Monochrome Image files are usually created from black and white maps and
engineering originals.
Level
1 scans are the least expensive alternative in the data capture
spectrum. Images are scanned in monochrome format, typically PDF, TIF or CIT,
saved with Group 4 compression. These files are acceptable for image libraries
of documents with acceptable graphics quality, legibility and contrast.
Severely damaged and faded originals or stained and darkened prints and
otherwise poor originals or copies may not be suitable for this option,
although current scanning instruments and software will go a long way towards
adequately preserving even marginal originals. One drawback of monochrome data
is the fact that once scanned, very little can be done to correct for image
deficiencies as a post-processing option. All tonal information is removed
during the scan, so stained and discolored edges or other extremely light or
dark areas of the original may not be captured and may be lost into the white
background or solid black portions of the image.
With GIS, CAD and FM software that
support raster display and editing, this option is an acceptable alternative to
vector solutions. Cost is minimized, since there is no format conversion, and
image quality can be quite high, depending on the condition of your originals.
Perhaps the only drawback to consider when using background raster data is the
increased loading and viewing times (panning and zooming), as well as the
longer plotting time required. Hybrid raster/vector files must be plotted to
raster-capable devices such as ink-jet, laser and electrostatic printers and
plotters. When your originals are of good graphics quality and you may wish to
do some editing yourself, this option will afford the lowest possible cost per
scan.
We scanning the original source documents and
batch-processing the data to create these files in two steps: Threshold and
Despeckle. Threshold is used to determine the separation point between
live data and background noise, which results in properly exposed scans. Despeckle
is used to assess the sizes of spots still present in the scanned data and
ensures their safe removal without loss of information.
The least expensive way to preserve your legacy
drawings
The complete scanning
and conversion solution
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