The additive primary colors are red, green, and blue. These primaries
represent the three main components of white light. Used seperately or
together, these three colors of light are mixed in equal parts to
Annotating and Rubberstamping Tools
This is a tool used in various imaging softwares which allows users to
edit images and utilizing a "rubber stamping" effect that stamps
images with phrases and symbols.
(American National Standards Institute for Engineering) One of three
popular drawing size standards.
Automatic Color Reduction
This option will scan the document and automatically select the 16
different shades of colors and reduce the full color image to 16
This is a image that is in raster format, but it is only on two colors
levels: (most commonly black and white )
Basic input output system'. Very basic software comes in the ROM of a
PC. This is computer set up utility which allows user to configure
computers settings to hardware and software specifications.
This image that is a computer file representing a line-art image that
was scanned with a scanner.
An additive adjustment for the intensity of primary colors. A feature
on the scanner that allows the operator to compensate for light or
Adjusting equipment so that it performs in accordance with an
establishment standard e.g scanner calibration, minimizing color
The medium used to feed into scanner so that it can calibrate.
Charge Coupled Device, the CCD is the image sensor in a scanner, that
converts light to voltages. These voltages are converted by the
scanner into the image.
The subtractive printing colors. Cyan, Magenta, Yellow, and Black.
Electromagnetic energy that exists in the form of wavelengths creates
the perception of color. There is a huge difference between the
visible spectrum we can see with our eyes and the colors which can be
Color bit depth
(A pixel with two choices is known as one-bit image,or two raised to
the power of one). Adding more bit information increases the number of
color options. The number of potential color options for a pixel is
called color bit depth.
Color Management System
This software increases the accuracy of color interchange between
scanners, displays and printers based on profiles for each device.
Imaging software developed by Widecom for use with the SLC836C
Reducing file sizes of images by encoding the data.
To modify hardware or software to specifications.
A technology used in certain scanners which allows the scanner to scan
at one level.
This relates to the scanner's effieciency in terms of scanning. Dust
and contamination on the scanner glass can interfere with scanning
The tonal range between light and dark in an image. Proper contrast is
important for an image to appear realistic.
This is a transformation from one set of parameters to an equivalent
Feature in imaging software which removes the skew from the image.
Feature in imaging software which removes unwanted noise from the
This is the ratio where x and y resolutions are not equal.
If the viewer is sufficiently distant from the printed page or
display, the value of neighboring pixels to acheive an apparent
improvement in the number of levels or colors that can be reproduced.
Dots Per Inch
A measurement used to measure scanner quality, the density difference
between highlights and shadows.
Expansion Cover Shield
The plastic cover piece which covers the expansion slot behind the
Jack where parallel port card is inserted in computer.
The color range scanable, printable or displayable by a device e.g. if
some of the displayable colors are outside of the gamnut of the
printer, they cannot be printed.
Refers to the range of 256 gray tones that make up an image.
A measurement of color as can be related by pointing towards a certain
color on the color wheel. Hue indicates the relative redness,
blueness, greenness, yellowness, etc. of a color.
Index color is the provision of a relatively small number (256
discrete colors in a color map or palette).
Circuit board in scanner to talk to computer.
ISA Bus speed
It is the rate at which the data is transferd in the PC ISA bus.
One of three popular drawing size standards. (International Standards
Organization for Engineering Drawings)
Joint Photographic Experts Group Compression. A method to save storage
space by compressing files. JPEG acheives a high degree of compression
by discarding non-important picture detail.
Liquid Crystal Display. Very popular display found on most laptops and
File compression and subsequent de-compression without any loss of
File compression that will compress data to a high degree. When
subsequently un-compressed data will have been lost.
Attribute of a visual sensation according to which an area appears to
emit more or less light.
Methods of lossless compression used with many file formats, developed
by Lempel, Zev and Welch.
A set of colors available for an image.
The electronic device in the scanner which senses the presence of
paper being fed in.
Parallel Port Cable
Used to connect various devices to the parallel port. (e.g. computer
Parallel Port Card
Circuit board for computer to talk to scanner.
PCI bus clock speed
The speed at which the data transfers into the PCI Bus.
A pixel is the small square picture element that is filled with color.
Pixels come in various sizes and their size is expressed in terms of
This is the lever which allows user to remove or adjust the document
by pulling up on it.
Random Access Memory
A picture composed of individual dots the way a scanner perceives it.
This is a feature found in ceratin imaging softwares that allows user
to edit image by using colored lines.
Defines the level of detail that can be captured or shown by scanner,
display, or output device.
Red, Green, Blue. The three primary components of white light.
It is one attribute of color in the color space called HSV (Hue
Saturation, Value). Saturation is a characteristic indicating the
vibrancy or intensity of a hue.
Area which is specified to be scanned.
Electronic device which performs actual scan.
The subtractive primary colors: Cyan, Magenta, and yellow. As ink
applied to a piece of paper by a printer, these colors absorb light
and alter the colors seen by looking at the printed paper.
TIFF File Format
Tagged Image File Format. One of the most common graphic file formats
for line-art and photographic images.
Industry Standard driver in the SLC836C scanner which allows users to
use most off the shelf software packages as compatible with the
Consists of mathematically defined elements, such as "Line from A to
B". "Circle with center and radius", etc.
Also called raster to vector conversion. The process of automatically
converting a raster (bit-mapped) image into a vector (CAD) drawing.