Title :
Estimation of shape of binary polygonal object from scattered field
Author :
Buvaneswari, A. ; Naidu, P.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Indian Inst. of Sci., Bangalore
fDate :
2/1/1998 12:00:00 AM
Abstract :
We present a method of estimating the shape of a weakly scattering binary convex polygonal object from the backscattered field. We use the concept scattering centers where it has been possible to model the scattered field as a sum of complex sinusoids. All corners of an object could be estimated with three or more illuminations, but of which at least two are in orthogonal directions. Using the amplitude of the sinusoids, we have also resolved the ambiguity in joining the corners when there are more than one object
Keywords :
acoustic field; acoustic imaging; acoustic signal detection; acoustic wave diffraction; acoustic wave scattering; backscatter; edge detection; electromagnetic fields; electromagnetic wave diffraction; electromagnetic wave scattering; parameter estimation; EM waves; acoustic waves; backscattered field; binary polygonal object; corner detection; diffraction tomography; illuminations; orthogonal directions; scattered field; scattering centers; shape estimation; sinusoids amplitude; sum of complex sinusoids; weakly scattering binary convex polygonal object; Acoustic diffraction; Acoustic imaging; Acoustic scattering; Electromagnetic scattering; Fourier transforms; Image coding; Lighting; Sensor arrays; Shape; Tomography;
Journal_Title :
Image Processing, IEEE Transactions on
