G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 17/00 (2006.01) G06T 1/00 (2006.01)
Patent
CA 2676487
A method for emphasizing differences in graphical appearances between an original document and a modified document is provided in accordance with an aspect of the present invention. The method includes the step of receiving a first bitmap of the modified document, and a second bitmap of the original document. The method includes deriving a set of difference points based upon a comparison of the first bitmap and the second bitmap. The method includes a step of superposing a spatial index onto the set of difference points, and generating polygon vertices from a plurality of adjacent elements of index. Each of the elements has a predetermined density of difference points. The method concludes with generating an annotation from the polygon vertices.
L'invention concerne un procédé de mise en valeur des différences d'apparence graphique entre un document original et un document modifié. Ledit procédé consiste à recevoir un premier topogramme binaire du document modifié et un second topogramme binaire du document original. Le procédé consiste ensuite à dériver un ensemble de points de différence à partir d'une comparaison du premier topogramme binaire et du second topogramme binaire. Le procédé consiste en outre à superposer un index spatial sur l'ensemble de points de différence et à générer des sommets polygonaux à partir d'une pluralité d'éléments adjacents de l'index. Chacun des éléments présente une densité de points de différence prédéterminée. Le procédé consiste enfin à générer une annotation à partir des sommets polygonaux.
Gunderson Benjamin
Hartmann Brian
Bluebeam Software Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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