Method and apparatus for encoding a contour of an object in a vi

Details Method and apparatus for encoding a contour of an object in a vi Method and apparatus for encoding a contour of an object in a vi

1996-07-25

1998-09-08

Mancuso, Joseph

Image analysis

Image compression or coding

Contour or chain coding

G06K 936, G06K 948

Patent

active

058057366

ABSTRACT:
A method encodes a contour of an object expressed in a digital video signal, the video signal having a plurality of video frames including a current and a previous frames, by using an improved contour motion estimation. Centroids of a current and a previous contours are first determined by averaging pixel positions on each contour, respectively, and a displacement therebetween is outputted as a motion vector. The previous contour is shifted based on the motion vector in order to produce the predicted current contour. Deviation information representing the difference between the predicted current and the current contours is detected based on the predicted current and the current contours and the centroid of the current contour and then is encoded.

REFERENCES:
patent: 4656507 (1987-04-01), Greaves et al.
patent: 5214506 (1993-05-01), Lin et al.
patent: 5598215 (1997-01-01), Watanabe
patent: 5608458 (1997-03-01), Chen et al.

Affiliated with

Also associated with

Rating

Method and apparatus for encoding a contour of an object in a vi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for encoding a contour of an object in a vi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encoding a contour of an object in a vi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1291775