Motion detection and estimation apparatus and method thereof
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United States of America Patent
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Jan 30, 1996
Grant Date -
N/A
app pub date -
Dec 22, 1992
filing date -
Dec 23, 1991
priority date (Note) -
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Abstract
Motion detection and motion estimation apparatus and method thereof. Motion detection becomes correct by taking horizontal/vertical changes of the incoming image into account. Also, motion direction and motion magnitude are detected and motion estimation can be made. The apparatus uses horizontal/vertical difference signals as certain critical values for motion detection judgement, detects left/right motion in the horizontal direction and up/down motion in the vertical direction by performing the exclusive-OR of horizontal/vertical difference signals and frame difference signals, and makes horizontal/vertical motion estimation possible by using a ratio of horizontal/vertical signal sums and frame difference signal sums with respect to a K.times.3 window.
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