Vogel, J.* ; Duliu, A.* ; Oyamada, Y.* ; Gardiazabal, J.* ; Lasser, T. ; Ziai, M.* ; Hein, R.* ; Navab, N.A.*
     
 
    
        
Towards robust identification and tracking of nevi in sparse photographic time series.
    
    
        
    
    
        
        Proc. SPIE 9035:90353D (2014)
    
    
    
		
		
			
				In dermatology, photographic imagery is acquired in large volumes in order to monitor the progress of diseases, especially melanocytic skin cancers. For this purpose, overview (macro) images are taken of the region of interest and used as a reference map to re-localize highly magni ed images of individual lesions. The latter are then used for diagnosis. These pictures are acquired at irregular intervals under only partially constrained circumstances, where patient positions as well as camera positions are not reliable. In the presence of a large number of nevi, correct identi cation of the same nevus in a series of such images is thus a time consuming task with ample chances for error. This paper introduces a method for largely automatic and simultaneous identi cation of nevi in di erent images, thus allowing the tracking of a single nevus over time, as well as pattern evaluation. The method uses a rotation-invariant feature descriptor that uses the local neighborhood of a nevus to describe it. The texture, size and shape of the nevus are not used to describe it, as these can change over time, especially in the case of a malignancy. We then use the Random Walks framework to compute the correspondences based on the probabilities derived from comparing the feature vectors. Evaluation is performed on synthetic and patient data at the university clinic.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Biomedical Imaging ; Dermatology ; Feature Descriptor ; Random Walks ; Robust Matching
    
 
    
        Keywords plus
        
    
 
    
    
        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2014
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2014
    
 
    
    
        ISSN (print) / ISBN
        0277-786X
    
 
    
        e-ISSN
        1996-756X
    
 
    
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        Konferenztitel
        18-20 February 2014
    
 
	
        Konferzenzdatum
        San Diego, CA
    
     
	
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        Quellenangaben
        
	    Band: 9035,  
	    Heft: ,  
	    Seiten: ,  
	    Artikelnummer: 90353D 
	    Supplement: ,  
	
    
 
  
        
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            SPIE
        
 
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30205 - Bioengineering and Digital Health
    
 
    
        Forschungsfeld(er)
        Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-503800-001
    
 
    
        Förderungen
        
    
 
    
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        Erfassungsdatum
        2014-06-26