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On Edge Detection of X-Ray Images Using Fuzzy Sets

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2 Author(s)
Pal, Sankar K. ; Electronics and Communication Sciences Unit, Indian Statistical Institute, Calcutta, India; Department of Electrical Engineering, Imperial College of Science and Technology, London, England. ; King, R.A.

The effectiveness of the theory of fuzzy sets in detecting different regional boundaries of X-ray images is demonstrated. The algorithm includes a prior enhancement of the contrast among the regions (having small change in gray levels) using the contrast intensification (INT) operation along with smoothing in the fuzzy property plane before detecting its edges. The property plane is extracted from the spatial domain using S, ¿ and (1 ¿) functions and the fuzzifiers. Final edge detection is achieved using max or min operator. The system performance for different parameter conditions is illustrated by application to an image of a radiograph of the wrist.

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:PAMI-5 ,  Issue: 1 )