Interactive input system and illumination system therefor
First Claim
Patent Images
1. An interactive input system comprising:
- an illumination source associated with each of a plurality of imaging assemblies and configured to emit radiation into a region of interest;
the plurality of imaging assemblies configured to capture image frames of said region of interest, at least one illumination source being in the field of view of at least one of the plurality of imaging assemblies; and
controller structure communicating with each illumination source, said controller structure configured to control the intensity of radiation emitted by each illumination source during image frame capture,wherein during image frame capture by one of the plurality of imaging assemblies, said controller structure causes the intensity of emitted radiation by its associated illumination source to be at a first illumination level, andwherein during image frame capture by another of said plurality of imaging assemblies, said controller structure causes the intensity of emitted radiation by the illumination source associated with said one of the plurality of imaging assemblies to be at a second, non-zero, lower illumination level.
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Abstract
An interactive input system includes at least one illumination source emitting radiation into a region of interest; at least one imaging assembly capturing image frames of the region of interest, the at least one illumination source being in the field of view of the at least one imaging assembly; and a controller communicating with the at least one illumination source, the controller controlling the intensity of radiation emitted by the at least one illumination source during image frame capture.
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Citations
24 Claims
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1. An interactive input system comprising:
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an illumination source associated with each of a plurality of imaging assemblies and configured to emit radiation into a region of interest; the plurality of imaging assemblies configured to capture image frames of said region of interest, at least one illumination source being in the field of view of at least one of the plurality of imaging assemblies; and controller structure communicating with each illumination source, said controller structure configured to control the intensity of radiation emitted by each illumination source during image frame capture, wherein during image frame capture by one of the plurality of imaging assemblies, said controller structure causes the intensity of emitted radiation by its associated illumination source to be at a first illumination level, and wherein during image frame capture by another of said plurality of imaging assemblies, said controller structure causes the intensity of emitted radiation by the illumination source associated with said one of the plurality of imaging assemblies to be at a second, non-zero, lower illumination level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of controlling image capture in an interactive input system, the method comprising:
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associating an illumination source with each of a plurality of imaging assemblies; causing at least one illumination source to emit radiation into a region of interest; causing the plurality of imaging assemblies to capture image frames of said region of interest, at least one illumination source being in the field of view of at least one imaging assembly and appearing in captured image frames; and controlling the intensity of radiation emitted by each illumination source during image frame capture by its associated imaging assembly, wherein during image frame capture by one of the plurality of imaging assemblies, the intensity of emitted radiation by its associated illumination source is controlled to be at a first illumination level, and wherein during image frame capture by another of said plurality of imaging assemblies, the intensity of emitted radiation by the illumination source associated with said one of the plurality of imaging assemblies is controlled to be at a second, non-zero, lower illumination level. - View Dependent Claims (18)
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19. An interactive input system comprising:
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a plurality of imaging assemblies configured to capture image frames of a region of interest from different vantages, said region of interest being at least partially surrounded by a reflective bezel; at least one illumination source associated with each imaging assembly and configured to emit radiation into said region of interest; and a controller for each at least one illumination source, each controller configured to cause its associated at least one illumination source to emit radiation into said region of interest at a first intensity level during image frame capture by its associated imaging assembly and configured to reduce the intensity of radiation emitted by its associated at least one illumination source from the first illumination level to a second non-zero lower intensity level during image frame capture by other imaging assemblies so that the intensity of emitted radiation at said second lower illumination level substantially matches the intensity of illumination reflected by said bezel. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification