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Image Analysis

Fuzzy-method-and-device-for-the-recognition-of-geometric-shapes-in-images

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Fuzzy method and device for the recognition of geometric shapes in images

Details

Inventors: Mancuso, Massimo; Moretti, Paolo; Poluzzi, Rinaldo; Rizzotto, Gianguido;
Assignee: SGS-Thomson Microelectronics S.r.l. (Agrate Brianza, IT)
Primary Examiner: Chang; Jon
Assistant Examiner:
Attorney, Agent or Firm: Wolf, Greenfield & Sacks, P.C.

A method for recognizing geometric shapes in an image using fuzzy logic. The method includes determining an edge in the image and a gradient of the edge. The gradient is corrected by virtue of a first fuzzy logic process, and the number of points that belong to the curve are determined by virtue of a second fuzzy logic process. A fuzzy device for the recognition of geometric shapes in images that implementing the method includes an edge detector, a fuzzy gradient corrector to correct the gradient, and a fuzzy vote attributor to determine the number of points that belong to the curve.

DETAILED DESCRIPTION Accordingly, an aim of the present invention is to provide a fuzzy method and device for the recognition of geometric shapes in images that gives greater robustness to the standard Hough transform.
Within the scope of the above aim, an object of the present invention is to provide a device that is less complex than known systems.
Another object of the present invention is to provide a method and a device that allow faster processing than known systems, theoretically in real time.
This aim, these objects, and others which will become apparent hereinafter are achieved by a fuzzy method for the recognition of geometric shapes in images, comprising the following steps: detection of at least one edge of a curve of an image; recognition of the gradient of said edge; correction of said gradient by virtue of first fuzzy means; and determination of the number of points that belong to said curve by virtue of second fuzzy means.
According to an illustrative embodiment of present invention, the method is performed by a fuzzy device that recognizes geometric shapes in images, comprising an edge detector, adapted to detect at least one edge of a curve of an image and to recognize the gradient of said edge; a fuzzy gradient corrector, adapted to correct said gradient; and a fuzzy vote attributor, adapted to determine the number of points that belong to said curve.

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