A Fast Optimization Method for Level Set Segmentation [Elektronisk resurs]
-
16th Scandinavian Conference on Image Analysis, June 15-18 2009, Oslo, Norway
-
Andersson, Thord, 1972- (författare)
-
Läthén, Gunnar (författare)
-
Lenz, Reiner (författare)
-
Borga, Magnus (författare)
-
Linköpings universitet Institutionen för medicinsk teknik (utgivare)
-
Linköpings universitet Tekniska högskolan (utgivare)
-
Linköpings universitet Centrum för medicinsk bildvetenskap och visualisering, CMIV (utgivare)
-
Linköpings universitet Institutionen för teknik och naturvetenskap (utgivare)
- Publicerad: Springer Berlin/Heidelberg, 2009
- Engelska.
-
Serie: Lecture Notes in Computer Science, 0302-9743
-
Ingår i: Image Analysis. ; 400-409
-
Läs hela texten
-
Läs hela texten
-
Läs hela texten
- Relaterad länk:
-
http://www.liu.se (web site)
Sammanfattning
Ämnesord
Stäng
- Level set methods are a popular way to solve the image segmentation problem in computer image analysis. A contour is implicitly represented by the zero level of a signed distance function, and evolved according to a motion equation in order to minimize a cost function. This function defines the objective of the segmentation problem and also includes regularization constraints. Gradient descent search is the de facto method used to solve this optimization problem. Basic gradient descent methods, however, are sensitive for local optima and often display slow convergence. Traditionally, the cost functions have been modified to avoid these problems. In this work, we instead propose using a modified gradient descent search based on resilient propagation (Rprop), a method commonly used in the machine learning community. Our results show faster convergence and less sensitivity to local optima, compared to traditional gradient descent.
Ämnesord
- Engineering and Technology (ssif)
- Teknik (ssif)
- TECHNOLOGY (svep)
- TEKNIKVETENSKAP (svep)
Genre
- government publication (marcgt)
Indexterm och SAB-rubrik
- Image segmentation - level set method - optimization - gradient descent - Rprop - variational problems - active contours
Inställningar
Hjälp
Uppgift om bibliotek saknas i LIBRIS
Kontakta ditt bibliotek, eller sök utanför LIBRIS. Se högermenyn.