Adaptive motion vector decision method and device for digital im

Details Adaptive motion vector decision method and device for digital im Adaptive motion vector decision method and device for digital im

1993-06-07

1998-05-05

Faile, Andrew

Television

Camera, system and detail

Camera image stabilization

348699, H04N 5228

Patent

active

057482314

ABSTRACT:
A digital image stabilization device receives correlation data generated from a plurality of local motion estimation areas and adaptively decides a motion vector according to irregular image environment. To do this, statistical variables and local motion vector are generated to check reliability by checking correlation values generated from each local motion estimation area. Then, it is determined that there is irregular image data deteriorating reliability of local motion vector, by analyzing statistical variables. Here, the irregular image environment can be in an image signal with low contrast, an image signal with a moving object, an image signal with repeated motion, etc. Also, isolativity and stability are obtained by analyzing local motion vector and a weight signal is generated with a predefined rate according to a computed result. Then, the output of the weight signal is controlled, according to a result of the reliability determination signal, where if there is irregular image data, the output of weight signal is blocked. And, a field motion vector is generated by multiplying a weight signal by a corresponding local motion vector and then averaging them. Finally, an accumulated motion vector is generated by attenuating a previous accumulated motion vector and adding the attenuated previous accumulated motion vector into the field motion vector.

REFERENCES:
patent: 4760606 (1988-07-01), Lesnick et al.
patent: 4984074 (1991-01-01), Uomori et al.
patent: 5107293 (1992-04-01), Sekine et al.
patent: 5208667 (1993-05-01), Saunders
patent: 5237405 (1993-08-01), Egusa et al.
Automatic Image Stabilization by Full Digital Signal Processing, Uomori et al., IEEE Trans. on Consumer Electronics--Aug. 1990.
An Edge Detection Approach to Digital Image Stabilization Based on Tri-State Adaptive Linear Neurons, Paik et al., IEEE Transactions on Consumer Electronics--Aug. 1991.

Affiliated with

Also associated with

Rating

Adaptive motion vector decision method and device for digital im does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive motion vector decision method and device for digital im, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive motion vector decision method and device for digital im will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-59800