[특허]Surveillance monitor system using image processing for monitoring fires and thefts

Surveillance monitor system using image processing for monitoring fires and thefts 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-007/18
출원번호	US-0911506 (1992-07-10)
우선권정보	JP-0172062 (1991-07-12); JP-0172063 (1991-07-12)
발명자 / 주소	Ishii Hiromitsu (5-2-801 Takasu 3-chome Chiba-shi Chiba JPX) Ono Takashi (Kashiwa JPX) Watanabe Kiyoshi (Sagamihara JPX)
출원인 / 주소	Hochiki Kabushiki Kaisha (Tokyo JPX 03) Ishii Hiromitsu (Chiba JPX 05)
인용정보	피인용 횟수 : 95 인용 특허 : 0

초록 ▼

By using the ratio of the G component to the R component G/R, or the ratio of the B component to the R component B/R, from a television monitor image, and referring to a conversion table for converting to distribution temperature, a surface temperature of a flame is found for each pixel. An area in which luminance signals included in an image of a surveillance area exceed a prescribed level is sampled as a flame outline, and at least the distribution temperature of a sampled flame region is detected, and distance to a radiant energy source is measured. The amount of radiant energy from the radiant energy source is estimated by computation, based on the sampled flame area and its distribution temperature and the distance to the source of radiant energy. The system is provided with a fire image recognition section for recognizing a fire from radiant energy itself and from change in radiant energy over time and outputting fire detection information and an intruder entity recognition section which, from monitor images from the same camera, recognizes an intruder entity and outputs burglary detection information. Processing modes are provided enabling fire and/or intruder entity image processing to be selected. If abnormality detection information is received using fire image or intruder entity recognition processing, a pre-alarm is outputted in the central monitor room, and also the monitor image in the central monitor room is switched to the image of the location where the abnormality has been detected.

대표청구항 ▼

A surveillance monitor system using image processing, comprising: an image-taking means for taking an image of areascape of a surveillance area; a fire image recognition section for recognizing a fire from a monitor image taken by said image-taking device and outputting fire detection information; an intruder entity image recognition section for recognizing an intruding entity from a monitor image taken by said image-taking device and outputting intruder detection information; a mode switching section for specifying that a monitor image be processed by said fire image recognition section and/or said intruder entity image recognition section; a pre-alarm output section for outputting a pre-alarm in a central monitor room upon receipt of detection information from said fire image recognition section or said intruder entity image recognition section; an image switching section for switching, in response to said pre-alarm, a monitor image in said central monitor room to an image of a location where an abnormality has been detected; said fire image recognition section comprising fire judging means using image processing for judging whether or not there is a fire based on a radiant energy source\s radiant energy found by a radiant energy calculating means; said fire judging means comprising flame outline sampling means for sampling as an outline of a flame an area whose luminance signals, included in an image taken by said image-taking means, exceed a prescribed level; at least temperature detection means for detecting a distribution temperature inside a flame outline sampled by said flame outline sampling means; distance measurement means for measuring a distance to a radiant energy source; and said radiant energy calculating means for calculating radiant energy from the radiant energy source, based on the distribution temperature inside the flame outline sampled by said flame outline sampling means; said image-taking means taking color images, and said temperature detection means finding for each pixel a flame surface temperature using a ratio of a G component to an R component (G/R) or a ratio of a B component to the R component (B/R) of said color images taken by said image-taking means and referring to a conversion table for converting to said distribution temperature.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Surveillance monitor system using image processing for monitoring fires and thefts 원문보기

초록 ▼

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연구과제 타임라인

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Surveillance monitor system using image processing for monitoring fires and thefts 원문보기

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