Imaging and display apparatus, information input apparatus, object detection medium, and object detection method
First Claim
1. An imaging and display apparatus comprising:
- an imaging-and-display panel having an image display function and an imaging function;
a backlight;
a processor; and
a memory device storing instructions which when executed by the processor cause the processor to operate with the imaging-and-display panel to;
(a) obtain a display-light-based image by imaging an object close to the imaging-and-display panel during a light-emission period when the backlight is turned on;
(b) obtain a shadow image by imaging the object during a non-light-emission period when the backlight is turned off;
(c) generate a difference image representing a difference between the display-light-based image and the shadow image; and
(d) obtain information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
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Accused Products
Abstract
The imaging and display apparatus is provided. The imaging and display apparatus includes the following elements. An imaging-and-display panel has an image display function and an imaging function. A generation unit generates a difference image representing a difference between a display-light-based image and a shadow image, the display-light-based image being obtained by the imaging-and-display panel by imaging an object close to the imaging-and-display panel using display light from the imaging-and-display panel, the shadow image being obtained by the imaging-and-display panel by imaging a shadow of the object. An image processing unit obtains information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
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Citations
20 Claims
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1. An imaging and display apparatus comprising:
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an imaging-and-display panel having an image display function and an imaging function; a backlight; a processor; and a memory device storing instructions which when executed by the processor cause the processor to operate with the imaging-and-display panel to; (a) obtain a display-light-based image by imaging an object close to the imaging-and-display panel during a light-emission period when the backlight is turned on; (b) obtain a shadow image by imaging the object during a non-light-emission period when the backlight is turned off; (c) generate a difference image representing a difference between the display-light-based image and the shadow image; and (d) obtain information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20)
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17. A non-transitory computer-readable medium storing instructions structured to cause a computer to:
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(a) image, by an imaging-and-display panel including a backlight and having an image display function and an imaging function, an object close to the imaging-and-display panel during a non-light-emission period when the backlight is turned off; (b) image, by the imaging-and-display panel, the object during a light-emission period when the backlight is turned on; (c) generate a difference image representing a difference between a display-light-based image obtained in the second imaging step and a shadow image obtained in the first imaging step; and (d) detect information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
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18. An object detection method comprising:
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(a) by an imaging-and-display panel including a backlight and having an image display function and an imaging function, obtaining a shadow image by imaging an object during a non-light-emission period when the backlight in is turned off; (b) by the imaging-and-display panel, obtaining a display-light-based image by imaging the object during a light-emission period when the backlight is turned on; (c) generating a difference image representing a difference between the obtained display-light-based image and the obtained shadow image; and (d) detecting information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
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19. An imaging and display apparatus comprising:
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an imaging-and-display panel having an image display function and an imaging function; a generation unit that generates a difference image representing a difference between a display-light-based image and a shadow image, the display-light-based image being obtained by the imaging-and-display panel by imaging an object close to the imaging-and-display panel during a light-emission period when the backlight in the imaging-and-display panel is turned on, the shadow image being obtained by the imaging-and-display panel by imaging the object during a non-light-emission period when the backlight is turned off; and an image processing unit that obtains information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
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Specification