Image analysis – Histogram processing
Reexamination Certificate
2005-09-13
2005-09-13
Johns, Andrew W. (Department: 2621)
Image analysis
Histogram processing
C382S225000
Reexamination Certificate
active
06944338
ABSTRACT:
An apparatus and method for identifying clusters in two-dimensional data by generating a two-dimensional histogram characterized by a grid of bins, determining a density estimate based on the bins, and identifying at least one cluster in the data. A smoothed density estimate is generated using a Gaussian kernel estimator algorithm. Clusters are identified by locating peaks and valleys in the density estimate (e.g., by comparing slope of adjacent bins). Boundaries (e.g., polygons) around clusters are identified using bins after bins are identified as being associated with a cluster. Boundaries can be simplified (e.g., by reducing the number of vertices in a polygon) to facilitate data manipulation.
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Dalal Sunil S.
Gluhovsky Ilya
Lock Michael D.
Alavi Amir
Becton Dickinson and Company
Johns Andrew W.
Roylance Abrams Berdo & Goodman L.L.P.
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