Computer vision based touch screen
First Claim
Patent Images
1. An interactive video display system, comprising:
- means for displaying an image, the means for displaying having a front side and a back side;
transparent means located in front of the means for displaying;
means for emitting a beam of non-visible wavelength light into the transparent means so that the non-visible wavelength light is substantially reflected within the transparent means;
detection means configured to acquire images of the transparent means, the detection means configured to detect non-visible wavelength light escaping from the transparent means in response to an object contacting the transparent means; and
computing means configured to;
analyze information generated by the detection means in response to detection of non-visible wavelength light escaping from the transparent means, andgenerate a responsive image for display on the means for displaying, the responsive image based on the analyzed information.
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Abstract
A self-contained interactive video display system. A projector projects a visual image onto a screen for displaying the visual image, wherein the projector projects the visual image onto a back side of the screen for presentation to a user on a front side of the screen. An illuminator illuminates an object near the front side of the screen. A camera detects interaction of an illuminated object with the visual image, wherein the screen is at least partially transparent to light detectable to the camera, allowing the camera to detect the illuminated object through the screen. A computer system directs the projector to change the visual image in response to the interaction.
681 Citations
27 Claims
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1. An interactive video display system, comprising:
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means for displaying an image, the means for displaying having a front side and a back side; transparent means located in front of the means for displaying; means for emitting a beam of non-visible wavelength light into the transparent means so that the non-visible wavelength light is substantially reflected within the transparent means; detection means configured to acquire images of the transparent means, the detection means configured to detect non-visible wavelength light escaping from the transparent means in response to an object contacting the transparent means; and computing means configured to; analyze information generated by the detection means in response to detection of non-visible wavelength light escaping from the transparent means, and generate a responsive image for display on the means for displaying, the responsive image based on the analyzed information. - View Dependent Claims (2)
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3. An interactive video display system, comprising:
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a display screen configured to display an image, the display screen having a front side and a back side; a transparent panel located in front of the display screen, the transparent panel having a front and a back side with an interior therebetween; an illuminator located proximate to an edge of the transparent panel located between the front and the back side of the transparent panel, the illuminator configured to emit a beam of non-visible wavelength light into the interior of the transparent panel via the edge of the transparent panel; a camera configured to generate images of the transparent panel through the display screen, the camera configured to detect non-visible wavelength light escaping from the transparent panel in response to an object contacting the front side of the transparent panel; and a computing device configured to; analyze information generated by the camera in response to detection of non-visible wavelength light escaping from the transparent panel, and generate a responsive image for display on the display screen, the responsive image based on the analyzed information. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23)
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21. The interactive video display system of 19, wherein the display screen includes a material configured to scatter visible light to a greater extent than infrared light.
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24. A method comprising:
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displaying an image on a display screen having a front side and a back side; emitting a beam of non-visible wavelength light into an edge of a panel located in front of the display screen so that the light reflects within the panel; detecting non-visible wavelength light escaping from the panel in response to an object contacting a front side of the panel, wherein detection of the non-visible light occurs at a camera imaging the panel; analyzing information generated by the camera in response to detection of non-visible wavelength light escaping from the panel; and generating a responsive image for display on the display screen, the responsive image based on the analyzed information. - View Dependent Claims (25, 26, 27)
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Specification