INTELLIGENT HIGH RESOLUTION VIDEO SYSTEM
First Claim
1. A method of dynamically controlling an imager of a video camera to provide with selectable resolution image information relating to one or more regions of interest in a scene acquired by the video camera, the imager having a specified maximum number of image pixels that establish a characteristic maximum image resolution of the imager, comprising:
- controlling the imager to acquire a first series of sub-sampled video data corresponding to a first field of view of the scene at a first image resolution;
analyzing the sub-sampled video data in the first series to detect a region of interest in the scene;
controlling the imager to acquire a second series of sub-sampled video data corresponding to a second field of view of the scene at a second image resolution, the sub-sampled video data in the second series representing, at the second image resolution, a windowed view of the detected region of interest in the first field of view of the scene; and
each of the first and second series of sub-sampled video data corresponds to fewer image pixels than the specified maximum number of image pixels of the imager.
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Abstract
An automated electronic video surveillance system enables a high-resolution mega-pixel camera to capture high quality, detailed, magnified images at multiple locations, simultaneously with an overview of the whole scene. A preferred embodiment requiring no moving parts provides full 360-degree continuous viewing with up to 5× all-digital zoom capability. The system performs continuous surveillance and active resolution allocation in the form of a feedback control subsystem that dynamically allocates resources so that important details within a scene receive appropriate scrutiny, while uninteresting areas are imaged at a lower resolution.
157 Citations
33 Claims
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1. A method of dynamically controlling an imager of a video camera to provide with selectable resolution image information relating to one or more regions of interest in a scene acquired by the video camera, the imager having a specified maximum number of image pixels that establish a characteristic maximum image resolution of the imager, comprising:
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controlling the imager to acquire a first series of sub-sampled video data corresponding to a first field of view of the scene at a first image resolution; analyzing the sub-sampled video data in the first series to detect a region of interest in the scene; controlling the imager to acquire a second series of sub-sampled video data corresponding to a second field of view of the scene at a second image resolution, the sub-sampled video data in the second series representing, at the second image resolution, a windowed view of the detected region of interest in the first field of view of the scene; and each of the first and second series of sub-sampled video data corresponds to fewer image pixels than the specified maximum number of image pixels of the imager. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An automated active video surveillance system, comprising:
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a high image data capacity video camera operable to produce images of a scene, the camera including a high resolution imager that acquires image data corresponding to the scene; a video analytics engine implemented to perform analysis of data acquired by the imager; an imager controller operatively associated with the imager and the video analytics engine to provide for analysis by the video analytics engine multiple portions of the acquired image data to detect regions of interest at different locations in the scene, the video analytics engine producing analysis output data representing results of the analysis performed; and a communications medium receiving and transmitting to a destination separate from the camera data corresponding to the analysis output data. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification