Motion vector detection method and device of the same

Details Motion vector detection method and device of the same Motion vector detection method and device of the same

2005-10-18

2010-12-14

Ge, Yuzhen (Department: 2624)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07852939

ABSTRACT:
When a search is made for a motion vector of a moving image, a motion vector search desirable against a hard movement is devised to be made with a small processing amount, and a motion vector detection device includes a wide range motion vector search part, a narrow range motion vector search part, a motion vector prediction part, and a motion vector re-search part. A rough search is made at equal intervals on an inputted image while a corresponding position in the reference image is made the center; a fine search is made in the vicinity of a predicted value of the motion vector only at one stage in accordance with a search format of a gradient method; and from a result of both, motion vector detection is performed as a motion vector search start point by the gradient method.

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Zhu et al., “A new Diamond Search Algorithm for Fast Block-Matching Motion Estimation”, IEEE Transactions on Image Processing, vol. 9, No. 2, Feb. 2000, pp. 287-290.

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