Motion vector detecting circuit

Details Motion vector detecting circuit Motion vector detecting circuit

1994-03-31

1996-03-05

Voeltz, Emanuel T.

Boots, shoes, and leggings

364516, 382232, H04B 1406

Patent

active

054973384

ABSTRACT:
A motion vector detecting circuit is for detecting a motion vector in moving picture coding using motion compensation prediction in the unit of block composed of L pixels by block matching between a block in a prediction target image and a candidate block in a reference image. The motion vector detecting circuit comprises a calculating section for calculating a first prediction error between a block in a prediction target image and a candidate block in a reference image using L1 (<L) pixels in block, comparing the first prediction error thus calculated with a threshold, and calculating a second prediction error between a block in the prediction target image and a candidate block in the reference image using L2 (L1<L2.ltoreq.L) pixels in block if a first prediction error of the candidate block is not more than the threshold; and a comparing section for comparing the second prediction error with a predetermined value and, if the second prediction error is smaller than the predetermined value, replacing the predetermined value with the second prediction error, whereby a motion vector to a candidate block giving a minimum second prediction error is determined as an optimum motion vector.

REFERENCES:
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patent: 5144423 (1992-09-01), Knauer et al.
Teresa H., Y. Meng and Andy C. Gond, "Parallel Array architectures for Motion Estimation", IEEE 1991 Special Purpose Design II p. 214.
Patent Abstracts of Japan, vol. 17, No. 57(E-1315), 4 Feb. 1993, abstracting Kawai+/Fujitsu JP-A-04 266 292 (Sep. 22, 1992 publication of laid-open application).

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