line smoothing
See Also: weeding
[data editing] The process of adding extra points to lines to reduce the sharpness of angles between line segments, resulting in a smoother appearance.
Smoothing
Smoothing is also a process that the map maker can employ to reduce the angularity of line work.
Line Smoothing: A variety of smoothing algorithms used to reduce file size by removing excessive turning points along a linear feature according to a user defined filter algorithm. (See Filtering).
About Smoothing and Surface Normals
Our terrain is made up of triangular faces. Our concern has always been to control their shape and number. We especially want to keep the numbers of triangles low, and to avoid long, acute triangles.
smoothing (a "low pass" filter, removes or reduces local detail)
edge enhancement (a "high pass" filter, exaggerates local detail)
weights should add to 1
example filters: ...
smoothing
In image processing, reducing or removing small variations in an image to reveal the global pattern or trend, either through interpolation or by passing a filter over the image.
The "smoothing" process is similar to slapping a big chunk of modeler's clay over the data spikes, ...
Tension and smoothing allow user to tune the surface character. For most landscape scale applications the default values should provide adequate results.
The amount of smoothing is therefore locally adaptive to the slope of the terrain. Since slope is a function of the terrain surface, it cannot be specified until the terrain surface has been interpolated.
- major operations: smoothing, simplification, aggregation, dissolving
- interpolation
Transform ...
This problem may be overcome partially by carrier smoothing of pseudoranges in the range/measurement domain using, for example, the Hatch filter.
New B-Spline based line smoothing function under the Vector menu.
New B-Spline Smooth Line function under the Line Editor menu.
Improved the Image/Information function that allows you to define image scanning resolution and units.
Preprocessing consists of smoothing and editing the data and ephemeris. Smoothing and editing ensures data quantity and quality.
Raster editing tools
Raster Snapping
Smoothing
Speckle removal
Merge
Optical Character Recognition (OCR)
OCR queued text replacement
Symbol Recognition, Automatically convert raster symbols to vector cells ...
smoothing function imposed by the target application will have more to work
with if the elevations span the entire integer space. Often the target
application is not particularly interested in the absolute elevations anyway ...
For example, a smoothing (low-pass filter) algorithm will take the mean value of a 3-x-3 cell kernel, and place the output value in the location of the central cell.
are intersection, point in polygon, area in area, and other expressions of interrelationships between geographic entities that can be used to select, reject, merge, or query spatial data bases. Many GIS packages provide line thinning and smoothing ...
Manipulation of the point-dependent density of an image to bring out or emphasize certain features of the image. These operations may include stretching (ratioing, contrast stretching, edge enhancement, filtering) and/or smoothing to improve the ...
 See also: Analysis, Information, Model, Surface, Relation
  
|
RSS
