Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1995-07-26
1997-09-16
Boudreau, Leo
Television
Image signal processing circuitry specific to television
Motion vector generation
348416, 235494, 382241, H04N 978
Patent
active
056686080
ABSTRACT:
An inventive apparatus estimates correct motion vectors between a current and its previous frames for feature points selected from the previous frame. A motion vector detector first determines a set of initial motion vectors for the feature points. Subsequently, a displacement generator provides N number of displacements to an initial motion vector of a selected feature point to thereby produce a set of N candidate motion vectors for the selected feature point, wherein the selected feature point is surrounded by its, e.g., six neighboring feature points to form a previous hexagon having a set of six triangles. And then, a predictor provides quasi-feature points in the current frame from the neighboring feature points through the use of the initial motion vectors thereof; and also generates a set of N selected quasi-feature points from the selected feature point by using the N candidate motion vectors. And a weight factor generator selectively generates one from a multiplicity of weigh factors based on position data of each of the pixels in the current hexagon and each of the N subject quasi-feature points. Finally, a motion vector selector selects a motion vector from the N candidate motion vectors corresponding to a set of six triangles in the current hexagon which yields a minimum error value among N error values obtained through the use of the weight factors between the current and the previous hexagons.
REFERENCES:
patent: 4998010 (1991-03-01), Chandler et al.
patent: 5295201 (1994-03-01), Yokohama
patent: 5541660 (1996-07-01), Kim et al.
patent: 5581308 (1996-12-01), Lee
Boudreau Leo
Daewoo Electronics Co. Ltd.
Mariam Daniel G.
LandOfFree
Motion vector estimation method and apparatus for use in an imag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motion vector estimation method and apparatus for use in an imag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion vector estimation method and apparatus for use in an imag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-221985