Autotek autocad raster design 2010 ユーザーズマニュアル
Gap Width A setting that defines the maximum gap (from 0 to 10 pixels) that
ProdNameShort can ignore as it follows a raster line, polyline, or contour.
ProdNameShort ignores any gap that is equal to or smaller than the Gap
Width. This setting is useful for scanned images that have many disconnected
raster lines or in which pixels are missing as a result of imperfect scans.
ProdNameShort can ignore as it follows a raster line, polyline, or contour.
ProdNameShort ignores any gap that is equal to or smaller than the Gap
Width. This setting is useful for scanned images that have many disconnected
raster lines or in which pixels are missing as a result of imperfect scans.
geo-referenced image An image that references real-world coordinates in its
correlation source. Example: Geo-referenced images include GeoSPOT, GeoTIFF,
and images that use world files as their correlation source.
correlation source. Example: Geo-referenced images include GeoSPOT, GeoTIFF,
and images that use world files as their correlation source.
GeoSPOT An image format from SPOT Image Corporation that supports
georeferencing information.
georeferencing information.
GeoTIFF A type of tagged image file format (TIFF) that supports geo-referencing
information.
information.
GIF Graphics Interchange Format. A raster image format created by
Compuserve.
Compuserve.
GIS (Geographic Information Systems) Computerized decision support
systems that integrate spatially referenced data. These systems capture, store,
retrieve, analyze, and display such data.
systems that integrate spatially referenced data. These systems capture, store,
retrieve, analyze, and display such data.
global coordinate system A method for defining points on the earth in a
Cartesian coordinate system, taking into account the curvature of the earth's
surface.
Cartesian coordinate system, taking into account the curvature of the earth's
surface.
gradient directional edge enhancement filters Filters that improve the
quality of the line where an object begins or ends by extracting individual
elements. These filters use the vector sum of the three coordinate variables X,
Y, and Z, taking into account their direction in space. You can use the gradient
directional edge enhancements filters in any one of the eight compass
directions. Use of these filters results in a black background with white outlines
of the objects in the image.
quality of the line where an object begins or ends by extracting individual
elements. These filters use the vector sum of the three coordinate variables X,
Y, and Z, taking into account their direction in space. You can use the gradient
directional edge enhancements filters in any one of the eight compass
directions. Use of these filters results in a black background with white outlines
of the objects in the image.
grayscale image An image usually created by a scanner in which continuous
tones are represented as uniform shades of gray. Each pixel uses eight bits of
information, producing 256 shades of gray.
tones are represented as uniform shades of gray. Each pixel uses eight bits of
information, producing 256 shades of gray.
grip(s) Small boxes displayed at various points on a selected object that can
be used to edit the object. Select a grip and then specify a grip editing function.
be used to edit the object. Select a grip and then specify a grip editing function.
hide To remove an image from the display while retaining it in active memory.
The image frame remains visible. To reverse a hide operation, select the image
frame or the toolspace object, then right-click and select Show. See also detach.
The image frame remains visible. To reverse a hide operation, select the image
frame or the toolspace object, then right-click and select Show. See also detach.
high pass filters A means for enhancing the edges of images. Images that do
not appear clear may also be sharpened by high pass filtering.
not appear clear may also be sharpened by high pass filtering.
390 | Glossary