Frequency domain subpixel registration using HOG phase correlation

Argyriou, Vasileios and Tzimiropoulos, Georgios (2016) Frequency domain subpixel registration using HOG phase correlation. Computer Vision and Image Understanding . ISSN 1077-3142

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Abstract

We present a novel frequency-domain image registration technique, which employs histograms of oriented gradients providing subpixel estimates. Our method involves image filtering using dense Histogram of Oriented Gradients (HOG), which provides an advanced representation of the images coping with real-world registration problems such as non-overlapping regions and small deformations. The proposed representation retains the orientation information and the corresponding weights in a multi-dimensional representation. Furthermore, due to the overlapping local contrast normalization characteristic of HOG, the proposed Histogram of Oriented Gradients - Phase Correlation (HOG-PC) method improves significantly the estimated motion parameters in small size blocks. Experiments using sequences with and without ground truth including both global and local/multiple motions demonstrate that the proposed method out- performs the state-of-the-art in frequency-domain motion estimation, in the shape of phase correlation, in terms of subpixel accuracy and motion compensation prediction for a range of test material, block sizes and motion scenarios.

Item Type: Article
Keywords: Phase correlation; Registration in frequency domain; Subpixel; Fourier; Histogram of oriented gradients
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Computer Science
Identification Number: 10.1016/j.cviu.2016.10.019
Depositing User: Tzimiropoulos, Yorgos
Date Deposited: 16 Jan 2017 13:36
Last Modified: 18 Oct 2017 07:12
URI: http://eprints.nottingham.ac.uk/id/eprint/39855

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