The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1993
Filed:
Mar. 26, 1991
Graphic Edge, Inc., Amherst, NH (US);
Abstract
A technique for developing an analytic model of an image by operating directly upon the pixel map representation output by an optical sampling device, such as a scanner. The resulting analytic representation is hierarchical, below a certain level, with each element an analytic expression representing a portion of the image. Above a certain level, the model is a simple array, to facilitate certain types of graphical manipulations. The model is developed by arranging pixel values into a number of groups called tiles. A number of operations are then performed on each tile, to determine how it can best be represented as an analytic expression. For example, if all pixel values in a tile are approximately continuously varying, they be represented as a three-dimensional linearly sloped surface. However, if one or more intensity boundaries run through the tile, analytic expressions, such as a straight line or a parabolic line segment, are derived from the tile's pixel values to describe the edges.