Determining optical flow from sequential images

An exact method determining the optical flow is presented by means of pixel-based mutual-correlation analysis of dynamic images. The mutual-correlation function is calculated between the temporal brightness change of the target pixel and that of its neighboring 16 (or 8) pixels. The local velocity of the target pixel is determined exactly through logical considerations using a reliable lag time estimated by the quadratic interpolation technique. The validity of the proposed method is confirmed by computer simulation of various dynamic images.

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