chain code
[data capture] A method of drawing a polygon as a series of straight line segments defined as a set of directional codes, with each code following the last like links in a chain.
Two other methods of graphic input are polar coordinates and Freeman Chain code. Within a polar coordinate system points are defined using the angle from the origin and the distance from the center.
when the pixel values of the raster will be used for analysis or deriving other data products. Referenced by: Lossy compression; Portable Network Graphics; Image scanner; Adobe Flash; JPEG; Graphics Interchange Format; Remote sensing; Chain code; ...
 See also: Map, Elevation, Attributes, Element, Digitize
  
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