Automatic Histogram Threshold with Fuzzy Measures using C-means
In this paper, an automatic histogram threshold approach based on a fuzziness measure is presented. This work is an improvement of an existing method. Using fuzzy logic concepts, the problems involved in finding the minimum of a criterion function are avoided. Similarity between gray levels is the key to find an optimal threshold. Two initial regions of gray levels, located at the boundaries of the histogram, are defined. Then, using an index of fuzziness, a similarity process is started to find the threshold point. A significant contrast between objects and background is assumed. Previous histogram equalization is used in small contrast images. Fuzzy c-means (FCM) is a method of clustering which allows one piece of data to belong to two or more clusters. This method is frequently used in pattern recognition. It is based on minimization of the objective function ! No prior knowledge of the image is required.
Keywords: fcm,threshold,histogram
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ABOUT THE AUTHORS
K. Srinivas
K. SRINIVAS obtained his M.Tech. from Nagarjuna University and pursuing his PhD from KL University under the guidance of Dr. V. Srikanth. His interested research area are image processing.
V. Srikanth
Dr. V.Srikanth obtained his B.Tech and M.E degrees from Madras University and PhD from Nagarjuna university. Presently working as Dean and HOD of IST, K.L. University,Vaddeswaram.AP.
K. Srinivas
K. SRINIVAS obtained his M.Tech. from Nagarjuna University and pursuing his PhD from KL University under the guidance of Dr. V. Srikanth. His interested research area are image processing.
V. Srikanth
Dr. V.Srikanth obtained his B.Tech and M.E degrees from Madras University and PhD from Nagarjuna university. Presently working as Dean and HOD of IST, K.L. University,Vaddeswaram.AP.
