Edge detection in digital images using dispersive phase stretch transform

Mohammad H Asghari; Bahram Jalali

doi:10.1155/2015/687819

Edge detection in digital images using dispersive phase stretch transform

Int J Biomed Imaging. 2015:2015:687819. doi: 10.1155/2015/687819. Epub 2015 Mar 23.

Authors

Mohammad H Asghari¹, Bahram Jalali²

Affiliations

¹ Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
² Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA ; Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA ; Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Abstract

We describe a new computational approach to edge detection and its application to biomedical images. Our digital algorithm transforms the image by emulating the propagation of light through a physical medium with specific warped diffractive property. We show that the output phase of the transform reveals transitions in image intensity and can be used for edge detection.