System and method for video detection of smoke and flame
First Claim
1. A method of detecting fire using video analysis, the method comprising:
- acquiring video data comprised of individual frames;
dividing each of the individual frames into a plurality of frame elements;
calculating a structural feature associated with each frame element;
identifying a core region of fire based on the calculated structural features;
defining a region surrounding the core region;
calculating a temporal feature associated with each frame element within the surrounding region;
associating the temporal features calculated with respect to frame elements within the surrounding region with the identified core region by assigning a representative temporal feature value to the core region; and
generating an output indicating whether the analyzed video data indicates the presence of fire based, at least in part, on the structural features and assigned temporal features associated with the identified core region.
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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. The video recognition system divides each individual frame of video data into a plurality of frame elements and calculates with respect to each frame element a structural feature that the algorithm uses to identify a core region of potential fire. The video recognition system defines a region surrounding the core region and calculates with respect to each frame element within the surrounding region a temporal feature. Based on the calculated temporal feature, the video recognition system associates a representative temporal value with the core region. Based on the structural and temporal features associated with the core region, video recognition system determines whether the video data indicates the presence of fire.
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Citations
20 Claims
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1. A method of detecting fire using video analysis, the method comprising:
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acquiring video data comprised of individual frames; dividing each of the individual frames into a plurality of frame elements; calculating a structural feature associated with each frame element; identifying a core region of fire based on the calculated structural features; defining a region surrounding the core region; calculating a temporal feature associated with each frame element within the surrounding region; associating the temporal features calculated with respect to frame elements within the surrounding region with the identified core region by assigning a representative temporal feature value to the core region; and generating an output indicating whether the analyzed video data indicates the presence of fire based, at least in part, on the structural features and assigned temporal features associated with the identified core region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for detecting the presence of fire, the system comprising:
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a frame operably connectable to receive video data comprised of a plurality of individual frames and to store the received video data; a frame element divider that divides each of the individual frames into a plurality of frame elements; a core region identifier that calculates with respect to each frame element a structural feature that is used to identify a core region of potential fire; a surrounding region identifier that defines a region surrounding the core region; a temporal feature calculator that calculates with respect to each frame element within the surrounding region a temporal feature; an assignor that associates a representative temporal feature calculated with respect to the surrounding region to the core region; and decisional logic that determines based on the structural and temporal features associated with the core region whether the video data indicates the presence of fire and generates the output based on this determination. - View Dependent Claims (12, 13, 14, 15)
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16. A video recognition system comprising:
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means for acquiring video data comprised of individual frames; means for dividing each of the individual frames into a plurality of frame elements; means for calculating a structural feature associated with each frame element; means for identifying a core region of fire based on the calculated structural features; means for defining a region surrounding the core region; means for calculating a temporal feature associated with each frame element within the surrounding region; means for associating the temporal features calculated with respect to frame elements within the surrounding region with the identified core region by assigning a representative temporal feature value to the core region; and means for generating an output indicating whether the analyzed video data indicates the presence of fire based, at least in part, on the structural features and assigned temporal features associated with the identified core region. - View Dependent Claims (17, 18, 19)
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20. A non-transitory computer readable storage medium encoded with a machine-readable computer program code for generating a fire detection output, the computer readable storage medium including instructions for causing a controller to implement a method comprising:
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acquiring video data comprised of individual frames; dividing each of the individual frames into a plurality of frame elements; calculating a structural feature associated with each frame element; identifying a core region of fire based on the calculated structural features; defining a region surrounding the core region; calculating a temporal feature associated with each frame element within the surrounding region; associating the temporal features calculated with respect to frame elements within the surrounding region with the identified core region by assigning a representative temporal feature value to the core region; and generating an output indicating whether the analyzed video data indicates the presence of fire based, at least in part, on the structural features and assigned temporal features associated with the identified core region.
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Specification