Menu 
VPA
Computer Vision And Pattern Analysis Laboratory Home Page  Home
People  People
Publications  Publications
Publications  Databases
Contact Information  Contact
Research
Supported Research Projects  Supported Research Projects
Research Activites  Research Activites
Research Groups
SPIS - Signal Processing and Information Systems Lab.SPIS - Signal Processing and Information Systems Lab.
Medical Vision and Analysis Group  Medical Research Activities
Biometrics Research Group  Biometrics Research Group
SPIS - Signal Processing and Information Systems Lab.MISAM - Machine Intelligence for Speech Audio and Multimedia.
Knowledge Base
  Paper Library
  VPA Lab Inventory
  Databases in VPALAB
Wide-Angle SAR Image Formation with Migratory Scattering Centers and Regularization in Hough Space
Authors: Kush R. Varshney, Müjdat Çetin, John W. Fisher III, and Alan S. Willsky
Published in: Adaptive Sensor Array Processing Workshop
Publication year: 2006
Abstract: Wide-angle synthetic aperture radar imaging presents numerous challenges, but also opportunities to extract object-level information. We present a methodology using an overcomplete dictionary and sparsifying regularization to characterize anisotropy (aspect-dependent scattering amplitude), and migration (aspect dependent scattering center spatial location), into the image formation process. We also introduce regularization terms in the normal parameter space of the Hough transform that favor solutions with sparsity along a line and consequently parsimony in the representation of glint anisotropy. The characterization of scatterer migration directly gives information about size and shape of objects in the spatial domain and such information can also be inferred from the parsimonious representations we extract for glint-type scattering.
  download full paper
Download

Home Back