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Titolo:
MAN-MACHINE INTERACTION USING A VISION SYSTEM WITH DUAL VIEWING ANGLES
Autore:
HUANG YJ; DOHI H; ISHIZUKA M;
Indirizzi:
RICOH CO LTD,INFORMAT & COMMUN R&D CTR YOKOHAMA KANAGAWA 222 JAPAN
Titolo Testata:
IEICE transactions on information and systems
fascicolo: 11, volume: E80D, anno: 1997,
pagine: 1074 - 1083
SICI:
0916-8532(1997)E80D:11<1074:MIUAVS>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Keywords:
VISION SYSTEM; DUAL VIEWING ANGLES; SPEECH DIALOGUE SYSTEM; MOTION TRACKING; MOUTH PATTERN RECOGNITION;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
Y.J. Huang et al., "MAN-MACHINE INTERACTION USING A VISION SYSTEM WITH DUAL VIEWING ANGLES", IEICE transactions on information and systems, E80D(11), 1997, pp. 1074-1083

Abstract

This paper describes a vision system with dual viewing angles, i.e., wide and narrow viewing angles, and a scheme of user-friendly speech dialogue environment based on the vision system. The wide viewing angleprovides a wide viewing field for wide range motion tracking, and thenarrow viewing angle is capable of following a target in wide viewingfield to take the image of the target with sufficient resolution. Fora fast and robust motion tracking, modified motion energy (MME) and existence energy (EE) are defined to detect the motion of the target and extract the motion region at the same lime. Instead of using a physical device such as a foot switch commonly used in speech dialogue systems, the begin/end of an utterance is detected from the movement of user's mouth in our system. Without recognizing the movement of lips directly, the shape variation of the region between lips is tracked for more stable recognition of the spall of a dialogue. The tracking speed is about IO frames/sec when no recognition is performed and about 5 frames/sec when both tracking and recognition are performed without using any special hardware.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 04:24:19