(under subclass 25) Subject matter wherein a display is produced in the form of a line drawing, a line being generated as a result of the interconnection of points exhibiting substantial changes between adjacent pixels.
SEE OR SEARCH CLASS
250, Radiant Energy,
558, for stereoplotters.
356, Optics: Measuring and Testing,
2, for contour plotters in which the contour is recorded from stereoscopic images.