Exemplar-based image completion via new quality measure based on phaseless texture features

摘要

This paper presents an exemplar-based image completion via a new quality measure based on phaseless texture features. The proposed method derives a new quality measure obtained by monitoring errors caused in power spectra, i.e., errors of phaseless texture features, converged through phase retrieval. Even if a target patch includes missing pixels, this measure enables selection of the best matched patch including the most similar texture features for realizing the exemplar-based image completion. Furthermore, since the phaseless texture features are robust to various changes such as spatial gaps and luminance changes, the new quality measure successfully provides the best matched patch from few training examples. Then, by solving an optimization problem that retrieves the phase of the target patch from the phaseless texture features of the best matched patch, its missing areas can be reconstructed. Consequently, accurate image completion using the new quality measure becomes feasible. Subjective and quantitative experimental results are shown to verify the effectiveness of our method using the new quality measure.