Alignment of non-texture video frames using Kalman filter

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Alignment of non-texture video frames using Kalman filter

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Video registration in the presence of several segments of non-texture frames remains a challenging issue, although a wide repertoire of image registration algorithms was developed over the last two decades. In this study, the authors proposed an effective causal scheme of video frames registration, and implemented it by the modified two frames intensity match algorithm. In order to achieve its real-time performance, the authors avoid handling a much more complex appearance model in this causal system by using registration parameters as measurement values, which are estimated directly from two consecutive frames via intensity matching. The simple linear and Gaussian system is thus derived and an efficient Kalman filter algorithm can be utilised. As the Kalman filter naturally incorporated the temporal information contained in a video into the estimation of registration parameters, the algorithm developed in this study is quite robust and has good performance even if the processed video contains several segments of non-texture frames.

Inspec keywords: linear systems; Kalman filters; video signal processing; image registration

Other keywords: intensity match algorithm; Kalman filter algorithm; video registration; linear system; Gaussian system; nontexture video frames; image registration algorithms

Subjects: Optical, image and video signal processing; Filtering methods in signal processing; Video signal processing

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