Image analysis – Image segmentation – Using projections
Reexamination Certificate
2007-01-22
2010-10-05
Carter, Aaron W (Department: 2624)
Image analysis
Image segmentation
Using projections
C382S274000, C382S282000, C348S143000
Reexamination Certificate
active
07809191
ABSTRACT:
In order to increase the recognition rate of a shadow area contained in the image of an aerial photograph, a central control portion performs the processes of: comparing a shadow-produced angle with the angles of segments constituting the polygons generated by a polygon-generating portion to judge whether or not there are the segments coinciding with the shadow-produced angle, of the segments constituting the polygon; judging whether or not the ratio of the length of the segment constituting the shadow to the length of the segment constituting the feature coincides with a shadow-extended ratio; judging whether or not the color tone of the area surrounded by the segments constituting the shadow is darker than that of all the adjacent polygons; and identifying the area surrounded by the segments constituting the shadow as “shadow area.” The polygon of the identified shadow area is generated.
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Carter Aaron W
Hitachi Software Engineering Co. Ltd.
Nixon & Vanderhye P.C.
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