Window blanking for pan/tilt/zoom camera
First Claim
1. A method of window-blanking for a pan/tilt/zoom camera, the method comprising:
- obtaining a panoramic image from the camera;
enabling a user to interact with the panoramic image as an interface for defining a privacy zone through a defined input mode;
providing a selection of layers including a panoramic image layer, map layer, hybrid panoramic image map layer, and annotations layer with the panoramic image interface;
computing a pan/tilt angle relative to world ground coordinates for each vertex of the privacy zone within a field-of-view of the camera;
determining coordinates for each vertex based on an updated or predicted camera field-of-view; and
blocking-out the privacy zone using the coordinates for each vertex.
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Accused Products
Abstract
Network cameras employing advanced video analytics are increasingly being used in both public and private settings. Unlike fixed surveillance cameras, pan/tilt/zoom cameras provide a dynamic field-of-view. Some regions within a given field-of-view can be designated as private and may not be recorded. A window-blanking feature, according to an embodiment of the invention, enables an ability to block out defined portions of the video where a privacy zone may otherwise appear. Through use of the embodiment, consistent privacy is provided during dynamic surveillance to ensure compliance with privacy regulations or contractual arrangements relating to use of a surveillance camera having a privacy zone within the given field-of-view.
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Citations
19 Claims
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1. A method of window-blanking for a pan/tilt/zoom camera, the method comprising:
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obtaining a panoramic image from the camera; enabling a user to interact with the panoramic image as an interface for defining a privacy zone through a defined input mode; providing a selection of layers including a panoramic image layer, map layer, hybrid panoramic image map layer, and annotations layer with the panoramic image interface; computing a pan/tilt angle relative to world ground coordinates for each vertex of the privacy zone within a field-of-view of the camera; determining coordinates for each vertex based on an updated or predicted camera field-of-view; and blocking-out the privacy zone using the coordinates for each vertex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18)
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10. A window-blanking image sensor system, comprising:
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an image sensor; a computer memory storing program instructions in communication with the image sensor, the program instructions being loadable and executable by a processor, and when executed, cause the processor to; compute an absolute pan/tilt angle relative to world ground coordinates for each vertex of a privacy zone within a field-of-view for the image sensor; determine coordinates for each vertex based on an updated or predicted image sensor field-of-view; and block-out the privacy zone using the coordinates for each vertex; and a privacy engine stored in the computer memory, wherein the privacy engine includes a mapping component configured to; receive a panoramic image from the image sensor; enable a user to interact with the panoramic image as an interface for defining the privacy zone through a defined input mode; and provide a selection of layers including a panoramic image layer, a map layer, a hybrid panoramic image map layer, and an annotations layer with the panoramic image interface. - View Dependent Claims (11, 12, 13)
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19. A method of enabling window-blanking by a camera, comprising:
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obtaining a panoramic image for a pan/tilt/zoom camera; enabling a user to interact with the panoramic image as an interface for defining the privacy zone through a defined input mode and to define at least one blanking zone within the panoramic image; providing a selection of layers including a panoramic image layer, map layer, hybrid panoramic image map layer, and annotations layer with the panoramic image interface; and storing vertices of the at least one blanking zone in a manner that enables blanking of the at least one blanking zone during imaging by the camera.
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Specification