Scientific Research Publishing

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51616#.VHKFJ2fHRK0 Author(s) Ji Zhao , Lina Zhang , Minmin Yin Affiliation(s) Department of Software Engineering, University of Science and Technology, Anshan, China . ABSTRACT Medical image segmentation is one of the key technologies in computer aided diagnosis. Due to the complexity and diversity of medical images, the wavelet multi-scale analysis is introduced into GVF (gradient vector flow) snake model. The modulus values of each scale and phase angle values are calculated using wavelet transform, and the local maximum points of modulus values, which are the contours of the object edges, are obtained along phase angle direction a...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51403#.VGlTnGfHRK0 Author(s)   Walter F. Schmidt 1* , Cathleen J. Hapeman 1 , James Wachira 2 , Clayton G. Thomas 3 Affiliation(s) 1 United State Department of Agriculture, Agricultural Research Service, Beltsville, Maryland, USA . 2 Department of Biology, School of Computer, Mathematical, and Natural Sciences, Morgan State University, Baltimore, Maryland, USA . 3 Clarence M. Mitchell Jr. School of Engineering, Morgan State University, Baltimore, Maryland, USA . ABSTRACT A 3-D electrostatic density map generated using the Wavefront Topology System and Finite Element Method clearly demonstrates the non-uniformity and periodicity...