Mobile digital image stabilisation using SIMD data path

Author

Ha, S.-W. ; Park, H.-C. ; Han, T.-D.

Author_Institution

Dept. of Comput. Sci., Yonsei Univ., Seoul, South Korea

Volume

48

Issue

15

fYear

2012

Firstpage

922

Lastpage

924

Abstract

Digital image stabilisation for mobile devices based on real-time phase correlation with support for the SIMD data path is presented. By using sub-image projection, the phase correlation process can be fitted within the real-time criteria. The proposed method acquires a global motion vector from a sub-image at the centre of the viewport, which is projected onto the x- and y-axes on which the phase correlation is performed. The projection stage and the FFT calculations are accelerated using the Neon SIMD engine that is facilitated in the ARM CPU. With this acceleration, the global motion vector for each image frame can be calculated in<;20 ms on the Samsung Galaxy S smartphone running at 1.0<;GHz.

Keywords

correlation methods; fast Fourier transforms; image restoration; mobile computing; motion estimation; multiprocessing systems; smart phones; ARM CPU; FFT calculations; Neon SIMD engine; SIMD data path; Samsung Galaxy S smartphone; fast Fourier transform; global motion vector; image frame; mobile devices; mobile digital image stabilisation; real-time phase correlation; subimage projection;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2012.0784

Filename

6248338