An application of fuzzy set theory for an electronic video camera image stabilizer

Author

Egusa, Yo ; Akahori, Hiroshi ; Morimura, Atsushi ; Wakami, Noboru

Author_Institution

Central Res. Labs., Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

3

Issue

3

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

351

Lastpage

356

Abstract

An electronic video camera image stabilizer has been developed which eliminates a substantial part of the image instability caused by the involuntary movement of camera holders. For the discrimination between image movement caused by unstable hand-holding and that of moving objects, fuzzy set theory is applied through the following process: 1) dividing the image taken by the camera into four regions, 2) providing two signals to discriminate between the causes of image instability, 3) evaluating these two discriminating signals after they are transformed into reliability values by membership functions, and 4) tuning the membership functions using a simplex method. This image stabilizer has been incorporated into a new compact video camera, and its substantially improved field performance has been confirmed

Keywords

fuzzy set theory; motion compensation; motion control; video cameras; camera holders; discriminating signals; electronic video camera image stabilizer; fuzzy set theory; involuntary movement; membership functions; moving objects; reliability values; simplex method; Cameras; Fuzzy set theory; Image converters; Optimization methods; Reliability theory; Signal processing;

fLanguage

English

Journal_Title

Fuzzy Systems, IEEE Transactions on

Publisher

ieee

ISSN

1063-6706

Type

jour

DOI

10.1109/91.413239

Filename

413239