A simple phase unwrapping approach based on filtering by windowed Fourier transform: The phase near edges

摘要

A simple phase unwrapping approach based on windowed Fourier filtering (WFF) was proposed recently. In this paper, the effects of the WFF on edges are further investigated, which show that the phase near an edge remains unchanged and no special consideration is needed for the edges. This useful property will be theoretically proven and numerically verified. (c) 2006 Elsevier Ltd. All rights reserved.