Scanning camera-based video surveillance system
First Claim
Patent Images
1. A video surveillance system comprising:
- at least one sensing unit operable in a scanning mode that obtains a first view of a scene, an acquisition mode that obtains a second view of the scene, and an interrogation mode; and
a video processing unit, coupled to the at least one sensing unit, that;
obtains video primitives from tracked and classified targets in the first view of the scene by processing image data received from the at least one sensing unit operating in the scanning mode;
detects a scene event or target activity in the first view of the scene by comparing the video primitives to at least one scene event rule or at least one target activity rule;
upon detection, depending on the scene event or target activity detected, automatically switches said at least one sensing unit from the scanning mode to the acquisition mode, wherein the second view of the scene obtained by the acquisition mode provides a closer view, at a variable level of zoom, of the detected scene event or target activity than said first view obtained by the scanning mode;
upon an occurrence of a return event of the acquisition mode, automatically switches the at least one sensing unit from the acquisition mode to the scanning mode;
upon an occurrence of an interrogation event of the acquisition mode, automatically switches said at least one sensing unit from the acquisition mode to the interrogation mode;
analyzes, using the interrogation mode, the detected scene event or target activity; and
upon an occurrence of a return event of the interrogation mode, automatically switches the at least one sensing unit from the interrogation mode.
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Abstract
A video surveillance system may include at least one sensing unit capable of being operated in a scanning mode and a video processing unit coupled to the sensing unit, the video processing unit to receive and process image data from the sensing unit and to detect scene events and target activity.
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Citations
30 Claims
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1. A video surveillance system comprising:
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at least one sensing unit operable in a scanning mode that obtains a first view of a scene, an acquisition mode that obtains a second view of the scene, and an interrogation mode; and a video processing unit, coupled to the at least one sensing unit, that; obtains video primitives from tracked and classified targets in the first view of the scene by processing image data received from the at least one sensing unit operating in the scanning mode; detects a scene event or target activity in the first view of the scene by comparing the video primitives to at least one scene event rule or at least one target activity rule; upon detection, depending on the scene event or target activity detected, automatically switches said at least one sensing unit from the scanning mode to the acquisition mode, wherein the second view of the scene obtained by the acquisition mode provides a closer view, at a variable level of zoom, of the detected scene event or target activity than said first view obtained by the scanning mode; upon an occurrence of a return event of the acquisition mode, automatically switches the at least one sensing unit from the acquisition mode to the scanning mode; upon an occurrence of an interrogation event of the acquisition mode, automatically switches said at least one sensing unit from the acquisition mode to the interrogation mode; analyzes, using the interrogation mode, the detected scene event or target activity; and upon an occurrence of a return event of the interrogation mode, automatically switches the at least one sensing unit from the interrogation mode. - View Dependent Claims (2, 3, 25, 26, 27, 28, 29, 30)
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4. A method, to be performed by video processing equipment, of processing video obtained by a sensing unit, comprising:
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scanning, by the sensing unit in a scanning mode, a scene for a target of interest; obtaining, by processing image data recorded by the sensing unit in the scanning mode, video primitives from tracked and classified targets in the scene; and detecting a scene event or target activity in a first view of the scene by comparing the video primitives to at least one scene event rule or at least one target activity rule; upon detecting the scene event or target activity, depending on the scene event or target activity detected in the image data, automatically switching the sensing unit to an acquisition mode that obtains a second view of the scene that provides a closer view, at a variable level of zoom, of the detected scene event or target activity than said first view; upon an occurrence of a return event of the acquisition mode, automatically switching the sensing unit from the acquisition mode to the scanning mode; upon an occurrence of an interrogation event of the acquisition mode, automatically switching the sensing unit from the acquisition mode to an interrogation mode that further analyzes the detected scene event or target activity; and upon an occurrence of a return event of the interrogation mode, automatically switching the sensing unit from the interrogation mode. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 24)
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22. A non-transitory computer-readable storage medium containing instructions that, when executed by a processor, cause video processing equipment to perform operations comprising:
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scanning, using a sensing unit in a scanning mode, a scene for a target of interest in a first view; determining, using image data obtained from the scanning, video primitives from tracked and classified targets in the first view; comparing the video primitives to at least one scene event rule or at least one target activity rule; detecting, based on the comparing, a scene event or target activity in the first view; upon the detecting, automatically switching the sensing unit from the scanning mode to an acquisition mode that obtains a second view of the detected scene event or target activity that is closer than the first view; upon an occurrence of a return event of the acquisition mode, automatically switching the sensing unit from the acquisition mode to the scanning mode; upon an occurrence of an interrogation event of the acquisition mode, automatically switching the sensing unit from the acquisition mode to an interrogation mode that further analyzes the detected scene event or target activity; and upon an occurrence of a return event of the interrogation mode, automatically switching the sensing unit from the interrogation mode.
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23. A video surveillance system comprising:
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at least one sensing unit that selectively operates in a scanning mode, an acquisition mode, and an interrogation mode; a computer system coupled to said at least one sensing unit to receive video output from said at least one sensing unit, said computer system including at least one processor, and a computer-readable medium coupled to said at least one processor that executes instructions stored on the computer-readable medium that control the computing system to perform operations comprising; scanning, using the scanning mode, a scene by following a predefined scan path; determining, using video recorded by the scanning, video primitives from a plurality of targets in the scene; comparing the video primitives to at least one scene event rule or at least one target activity rule; detecting, based on the comparing, a scene event or target activity involving a first target of the plurality of targets; upon the detecting, automatically switching the at least one sensing unit from the sensing mode to the acquisition mode that obtains a zoomed view of the first target; upon an occurrence of a return event of the acquisition mode, automatically switching the at least one sensing unit from the acquisition mode to the scanning mode; upon an occurrence of an interrogation event of the acquisition mode, automatically switching the sensing unit from the acquisition mode to the interrogation mode that further analyzes the detected scene event or target activity; and upon an occurrence of a return event of the interrogation mode, automatically switching the at least one sensing unit from the interrogation mode.
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Specification