Interactive input system and method of detecting objects
First Claim
Patent Images
1. A method comprising:
- capturing image frames of an input area using a plurality of imaging devices, each imaging device having a field of view encompassing at least a portion of the input area;
processing captured image frames to identify a plurality of targets therein;
analyzing the identified plurality of targets to determine when the targets represent a plurality of physical projections extending from a body of a user manipulatable input object, the body of the user manipulatable input object being outside of the fields of view of the imaging devices and not appearing in captured image frames; and
when the targets represent the plurality of physical projections extending from the body of the user manipulatable input object, identifying a pattern of the projections thereby to identify the user manipulatable input object.
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Abstract
A method comprises capturing image frames of an input area using a plurality of imaging devices, each having a field of view encompassing at least a portion of the input area; processing captured image frames to identify a plurality of targets therein; analyzing the identified plurality of targets to determine if the targets represent a plurality of projections of an input object; and if so, identifying a pattern of the projections thereby to identify the input object.
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Citations
32 Claims
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1. A method comprising:
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capturing image frames of an input area using a plurality of imaging devices, each imaging device having a field of view encompassing at least a portion of the input area; processing captured image frames to identify a plurality of targets therein; analyzing the identified plurality of targets to determine when the targets represent a plurality of physical projections extending from a body of a user manipulatable input object, the body of the user manipulatable input object being outside of the fields of view of the imaging devices and not appearing in captured image frames; and when the targets represent the plurality of physical projections extending from the body of the user manipulatable input object, identifying a pattern of the projections thereby to identify the user manipulatable input object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An interactive input system comprising:
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a plurality of imaging devices having at least partially overlapping fields of view encompassing an input area and configured to capture image frames; and processing structure configured to process image frames captured by the imaging devices to identify a plurality of targets, analyze the identified plurality of targets to determine when the targets represent a plurality of physical projections extending from a body of a user manipulatable input object, the body of the user manipulatable input object being outside of the fields of view of the imaging devices and not appearing in captured image frames, and when the targets represent the plurality of physical projections extending from the body of the user manipulatable input object, identify a pattern of the projections thereby to identify the user manipulatable input object. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 30, 31, 32)
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29. A non-transitory computer readable medium embodying a computer program for execution by a computing device to perform a method of identifying at least one input object, the computer program comprising:
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program code for processing image data from captured image frames to identify a plurality of targets; program code for analyzing the plurality of targets to determine when the targets represent a plurality of physical projections extending from a body of a user manipulatable input object, the body of the user manipulatable input object being outside of fields of view of imaging devices capturing the image frames and not appearing in captured image frames; and program code for identifying a pattern of the projections thereby to identify the user manipulatable input object when the targets represent the plurality of physical projections extending from the body of the user manipulatable input object.
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Specification