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Mobile Multimedia/Image Processing, Security, and Applications 2016
In this paper we present a low level image descriptor called Histogram of Oriented Phase based on phase congruency concept and the Principal Component Analysis (PCA). Since the phase of the signal conveys more information regarding signal structure than the magnitude, the proposed descriptor can precisely identify and localize image features over the gradient based techniques, especially in the regions affected by illumination changes. The proposed features can be formed by extracting the phasedoi:10.1117/12.2225159 fatcat:ym7yrxqcgbh3lp4quic6fke2xe