A color space with the three variables of Hue, Saturation, Value. Hue means color (as in the color wheel.) Saturation
is an indication relating to the richness or vibrancy of the color. Value is a term best related to the intensity of light
illuminating the object.
A named color. In discussions of color that relate to photography, scanning, and printing, six hues are especially
important: red, yellow, green, cyan, blue, and magenta. These hues make up every color we can see, and are the
designated hues on color wheels. Hue is also a measurement of color that 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.
The International Color Consortium (ICC) was formed to address the need for a common color framework. The ICC
has developed a standard device profile that contains information about how various devices render color. This
concept is supported by Apple (Colorsync), Microsoft for Windows 95, Sun for Solaris, and by Silicon Graphics for
Irix.
A program used to edit pictures to change colors, increase detail, scale or otherwise alter the picture.
Indexed color (or pseudo-color) is the provision of a relatively small number, say 256, of discrete colors in a colormap
or palette. For each pixel in the image, the index number of a color is then stored. When retrieving the image, a
lookup table uses the index to retrieve red, green and blue components that are then sent to the display. In graphic
file formats such as PCX of TIFF, an indexed color image is accompanied by its colormap.
Using the interpolation method of resampling generates values for points in between the actual pixels by looking at
the surrounding colors or intensities. In a scanner resolution is increased beyond the actual number of CCD cells. As
each line of pixel data arrives from the cameras, new interpolated pixels are added between original pixels. The
added pixels enhance line edge definition.
Joint Photographic Experts Group Compression. A method to save storage space by compressing files. JPEG
achieves a high degree of compression by discarding non-important picture detail.
A compressed file format for images. Named after the Joint Photographic Expert Group, JPEG images feature small
file size and speed, but lower quality than other formats.
Is the product/model specific code that the Customer receives with his Scanner (base model).
File compression and subsequent de-compression without any loss of data.
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