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Image Edge Extraction via Fuzzy ReasoningA computer-based technique for detecting edges in gray level digital images employs fuzzy reasoning to analyze whether each pixel in an image is likely on an edge. The image is analyzed on a pixel-by-pixel basis by analyzing gradient levels of pixels in a square window surrounding the pixel being analyzed. An edge path passing through the pixel having the greatest intensity gradient is used as input to a fuzzy membership function, which employs fuzzy singletons and inference rules to assigns a new gray level value to the pixel that is related to the pixel's edginess degree.
Document ID
20080031674
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Dominquez, Jesus A. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Klinko, Steve (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 24, 2013
Publication Date
July 15, 2008
Subject Category
Instrumentation And Photography
Report/Patent Number
Patent Number: NASA-Case-KSC-12278
Patent Application Number: US-Patent-Appl-SN-10/783295
Patent Number: US-Patent-7,400,766
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-KSC-12278|US-Patent-7,400,766
Patent Application
US-Patent-Appl-SN-10/783295

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