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Estimation of sub-pixel motion using gradient cross-correlation

Estimation of sub-pixel motion using gradient cross-correlation

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© IEE
Published

A computationally efficient scheme suitable for the estimation of sub-pixel motion in video sequences is presented. The scheme is based on the maximisation of the cross-correlation function between spatial gradient information derived from a pair of images. The proposed scheme is highly accurate, outperforms established frequency-domain motion estimation methods and is considerably more immune to noise.

Inspec keywords: correlation methods; video signal processing; gradient methods; motion estimation; image sequences

Other keywords: maximisation; sub-pixel motion; cross-correlation function; gradient cross-correlation; spatial gradient information; video sequences; frequency-domain motion estimation methods

Subjects: Optical, image and video signal processing; Video signal processing

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