DocumentCode
1364143
Title
Automatic viewing range tracing method for communication equipment
Author
Yamamoto, Kazuyuki ; Tsukada, Hideo ; Mizukoshi, Hidemi
Author_Institution
NTT Corp., Kanagawa, Japan
Volume
37
Issue
3
fYear
1991
fDate
8/1/1991 12:00:00 AM
Firstpage
424
Lastpage
431
Abstract
A low-cost image processing feature for the video telephone and television doorphone intercom has been developed. By solving the practical problems involved and modifying the AVRT (automatic viewing range tracing method) algorithm, the error ratio of the AVRT was reduced several percentage points, which clears the way for its practical use. The AVRT feature can also be used as a security sensor in home automation systems
Keywords
distance measurement; picture processing; teleconferencing; videotelephony; AVRT algorithm; automatic viewing range tracing; communication equipment; error ratio; home automation systems; image processing; security sensor; television doorphone intercom; video telephone; Cameras; Charge-coupled image sensors; Communication equipment; Humans; Infrared image sensors; Large scale integration; Signal processing; Signal processing algorithms; Telephony; Videoconference;
fLanguage
English
Journal_Title
Consumer Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0098-3063
Type
jour
DOI
10.1109/30.85547
Filename
85547
Link To Document