Image analysis – Image compression or coding – Predictive coding
Patent
1992-04-01
1995-09-19
Boudreau, Leo H.
Image analysis
Image compression or coding
Predictive coding
348415, G06K 936, H04N 5917, H04N 732
Patent
active
054523770
ABSTRACT:
A motion vector detecting apparatus using the minimum residual difference between corresponding picture elements from two consecutive frames and an interpolation circuit to develop a moving vector with half-picture-element pitch accuracy. A residual difference is obtained by comparing each frame of an image signal fed into the apparatus with each previous frame. A solution vector is obtained by taking the minimum value of the absolute values of the residual differences. The solution vector is adjusted by a correction value, which is determined by interpolating extreme values in the vicinity of this solution vector and taking a minimum therefrom, to obtain the half-picture-element pitch solution vector.
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Boudreau Leo H.
Kelley Christopher S.
Maioli Jay H.
Sony Corporation
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