VIDEO-BASED SYSTEM AND METHOD FOR FIRE DETECTION
First Claim
1. A method of suppressing false alarms associated with video-based fire detection, the method comprising:
- defining acceptable regions within a field of view of a video detector;
associating a rule with each of the defined acceptable regions;
acquiring video data comprised of one or more frames from the video detector;
identifying regions within the field of view of the video detector indicative of fire based on the acquired video data;
detecting overlap between the regions identified as indicative of fire and the defined acceptable regions; and
applying the rule associated with the acceptable region detected to overlap with the region identified as indicative of fire to determine whether an alarm should be triggered or suppressed.
1 Assignment
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Accused Products
Abstract
A video recognition system detects the presence of fire based on video data provided by one or more video detectors, but suppresses the triggering of an alarm in situations based on the selection of acceptable regions and application of rules associated with each acceptable region. A user defines acceptable regions within the field of view of the video detector and associates with each acceptable region a rule. During processing of video data associated with the field of view, video metrics are calculated and analyzed to detect the presence of fire (e.g., flame or smoke). Prior to triggering an alarm, regions identified as indicative of fire are compared with the user-defined acceptable regions. If there is overlap between the two regions, the rule associated with the acceptable region is applied to determine whether the alarm should be suppressed or triggered.
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Citations
20 Claims
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1. A method of suppressing false alarms associated with video-based fire detection, the method comprising:
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defining acceptable regions within a field of view of a video detector; associating a rule with each of the defined acceptable regions; acquiring video data comprised of one or more frames from the video detector; identifying regions within the field of view of the video detector indicative of fire based on the acquired video data; detecting overlap between the regions identified as indicative of fire and the defined acceptable regions; and applying the rule associated with the acceptable region detected to overlap with the region identified as indicative of fire to determine whether an alarm should be triggered or suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for detecting the presence of fire, the system comprising:
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a frame buffer operably connectable to receive video data comprised of a plurality of individual frames and to store the received video data; a calculator that calculates one or more metrics associated with the received video data; a detector that determines based on the calculated metrics whether regions within the received video data is indicative of the presence of fire, an acceptable region defined by a user with respect to a field of view defined by the video data, including a rule associated with the acceptable region for determining whether to trigger or suppress an alarm based on interaction between the acceptable region and the region identified as indicative of fire; and an alarm suppressor that compares the user-defined acceptable region with regions identified as indicative of fire and applies the rule defined with respect to the acceptable region to determine whether the alarm should be triggered or suppressed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for detecting the presence of fire, the system comprising:
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means for defining acceptable regions within a field of view of a video detector; means for associating one or more rules with each of the defined acceptable regions; means for acquiring video data comprised of one or more frames from the video detector; means for identifying regions within the field of view of the video detector indicative of fire based on the acquired video data; means for detecting overlap between the regions identified as indicative of fire and the defined acceptable regions; and means for applying the rule associated with the acceptable region detected to overlap with the region identified as indicative of fire to determine whether an alarm should be triggered or suppressed. - View Dependent Claims (16, 17)
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18. A method of suppressing false alarms associated with video-based fire detection, the method comprising:
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defining acceptable regions within a field of view of a video detector; associating a rule with each of the defined acceptable regions; acquiring video data comprised of one or more frames from the video detector; identifying regions within the field of view of the video detector indicative of fire based on the acquired video data; detecting a correlation between the regions identified as indicative of fire and the defined acceptable regions; and applying the rule associated with the acceptable region detected to correlate with the region identified as indicative of fire to determine whether an alarm should be triggered or suppressed. - View Dependent Claims (19, 20)
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Specification