Article


Article Code : 1393073010672783(DOI : 10.7508/jist.2013.04.003)

Article Title : Digital Video Stabilization System by Adaptive Fuzzy Kalman Filtering

Journal Number : 4 Autumn 2013

Visited : 1450

Files : 646 KB


List of Authors

  Full Name Email Grade Degree Corresponding Author
1 Mohammad javad Tanakian j.tanakian@gmail.com Graduate PhD
2 Mehdi Rezaei mehdi.rezaei@ece.usb.ac Assistant Professor PhD
3 Farahnaz Mohanna f_mohanna@ece.usb.ac.ir Assistant Professor PhD

Abstract

Digital video stabilization (DVS) allows acquiring video sequences without disturbing jerkiness, removing unwanted camera movements. A good DVS should remove the unwanted camera movements while maintains the intentional camera movements. In this article, we propose a novel DVS algorithm that compensates the camera jitters applying an adaptive fuzzy filter on the global motion of video frames. The adaptive fuzzy filter is a Kalman filter which is tuned by a fuzzy system adaptively to the camera motion characteristics. The fuzzy system is also tuned during operation according to the amount of camera jitters. The fuzzy system uses two inputs which are quantitative representations of the unwanted and the intentional camera movements. Since motion estimation is a computation intensive operation, the global motion of video frames is estimated based on the block motion vectors which resulted by video encoder during motion estimation operation. Furthermore, the proposed method also utilizes an adaptive criterion for filtering and validation of motion vectors. Experimental results indicate a good performance for the proposed algorithm.