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HD Ultra X Service Guide
UCR
Under Color Removal. A color separation setting used on color photographs where cyan, magenta and
yellow inks are removed from dark, neutral areas and substituted by black ink. The advantages are a
reduction in overall ink usage. See also GCR.
Vector Drawing
Also called Vector File. Consists of mathematically defined elements, such as "Line from A to B", "Circle
with center and radius", etc. CAD systems use vector drawings because of their accuracy, relatively low
memory requirement and data-file sizes compared to raster images.
Vector File
Also called Vector Drawing. Consists of mathematically defined elements such as: Line from A to B, Circle
with center and radius etc. CAD systems use vector drawings because of their accuracy and relatively low
memory and data file sizes compared to raster images.
Vectorization
Also called raster-to-vector conversion (RTV). The process of automatically converting a raster (bit-
mapped) image into a vector (CAD) drawing.
White Level
White Level is a setting in scan programs used if one has an original with a background that is not
completely white. To get the background to appear as pure white one can set the White Level to a lower
value.
White Point Adjustment
An adjustment made that will determine the amount of highlight detail in an image. The white point should
be set so that the lightest part of an image will only just have zero detail.
XYZ
The CIE system is based on the description of color as a brightness (luminance) component Y (as
described above), and two additional components X and Z. The spectral weighting curves of X and Z have
been standardized by the CIE, based on statistics from experiments involving human observers. XYZ tri-
stimulus values can describe any color.
Zoom
The ability to enlarge or shrink the view of the picture in a window. Zoom does not alter the size of the final
scanned picture; it only provides a better view while creating a selection border on the screen.
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