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 processed by the video camera, the imager having a specified maximum number of image pixels that establish a characteristic maximum image resolution of the imager and having a number of image pixels from which are produced video data that represent the scene, comprising:
- controlling the imager to acquire high resolution video data representing substantially the specified maximum number of image pixels that capture a full field of view of the scenecontrolling the imager to acquire a first series of sub-sampled video data from the high resolution video data corresponding to the scene at a first image resolution, the first series of sub-sampled video data produced by a first subset of image pixels composed of fewer image pixels than the specified maximum number of image pixels of the imager;
analyzing the sub-sampled video data in the first series to detect a region of interest within the scene; and
controlling the imager to acquire a second series of sub-sampled video data from the high resolution video data corresponding to the detected region of interest within the scene at a second image resolution thereby non-uniformly sub-sampling at least one frame of the video data, the second image resolution being higher than the first image resolution, the sub-sampled video data in the second series representing a windowed view of the detected region of interest in the scene.
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Accused Products
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.
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Citations
31 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 processed by the video camera, the imager having a specified maximum number of image pixels that establish a characteristic maximum image resolution of the imager and having a number of image pixels from which are produced video data that represent the scene, comprising:
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controlling the imager to acquire high resolution video data representing substantially the specified maximum number of image pixels that capture a full field of view of the scene controlling the imager to acquire a first series of sub-sampled video data from the high resolution video data corresponding to the scene at a first image resolution, the first series of sub-sampled video data produced by a first subset of image pixels composed of fewer image pixels than the specified maximum number of image pixels of the imager; analyzing the sub-sampled video data in the first series to detect a region of interest within the scene; and controlling the imager to acquire a second series of sub-sampled video data from the high resolution video data corresponding to the detected region of interest within the scene at a second image resolution thereby non-uniformly sub-sampling at least one frame of the video data, the second image resolution being higher than the first image resolution, the sub-sampled video data in the second series representing a windowed view of the detected region of interest in the scene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 31)
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21. An automated active video surveillance system, comprising:
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a high image data capacity video camera operable to provide image information relating to a scene processed by the video camera, the camera including a high resolution imager that has a number of image pixels from which are produced image data representing a scene processed by the video camera; a video analytics engine implemented to analyze data included in the image data produced by the imager; an imager controller operatively associated with the imager and the video analytics engine to acquire high resolution video data representing substantially all of the number of image pixels that capture a full field of view of the scene and to provide multiple portions of the image data for analysis by the video analytics engine to detect regions of interest at different locations in the scene, the multiple portions including a first series of sub-sampled image data from the high resolution video data and a second series of sub-sampled image data from the high resolution video data, the first series of sub-sampled image data corresponding to the scene at a first image resolution for analysis by the video analytics engine to detect a first region of interest within the scene, the second series of sub-sampled image data representing a windowed view of the detected first region of interest within the scene at a second resolution that is higher than the first image resolution; and a communications medium receiving and transmitting to a destination separate from the camera analysis output data provided by the video analytics engine upon analyzing the first and second series of sub-sampled image data, wherein the first and second series of sub-sampled image data are formed by non-uniformly sub-sampling at least one frame of the image data. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification