Title:
MOTION VECTOR DETECTOR FOR IMAGE
Document Type and Number:
Japanese Patent JP3303311
Kind Code:
B2
Abstract:
PURPOSE: To provide the motion vector detector for an image capable of detecting the motion vector of the image with high accuracy by interpolation estimation.
CONSTITUTION: A subtraction circuit 12 detects difference between the image data of respective picture elements in the block of a current frame and the image data of a representative point picture element in the block of the preceding frame read from a representative point memory 11, and a correlation integrated value table forming circuit 13 forms a correlation integrated value table. When the coordinate of a minimum correlation integrated value in the correlation integrated value table is a coordinate excepting for a coordinate corresponding to the representative point picture element, a motion vector estimating circuit 14 estimates the motion vector of the image based on the correlation integrated value in a peripheral coordinate, where the coordinate of the minimum correlation integrated value positions at the center, and the minimum correlation integrated value.
Inventors:
Tetsujiro Kondo
Yasuhiro Fujimori
Masafumi Uchida
Ken Horishi
Tsukasa Hashino
Yasuhiro Fujimori
Masafumi Uchida
Ken Horishi
Tsukasa Hashino
Application Number:
JP29048491A
Publication Date:
July 22, 2002
Filing Date:
October 11, 1991
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N5/232; H04N7/36; (IPC1-7): H04N5/232
Domestic Patent References:
| JP2118888A | ||||
| JP279585A |
Attorney, Agent or Firm:
Akira Koike (2 outside)