Gesture detection device for detecting hovering and click
First Claim
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1. A gesture detection device, comprising:
- a detection surface having a normal direction;
an infrared light source configured to emit light alternatively in a first brightness value and a second brightness value, wherein the second brightness value is zero or nonzero brightness;
a first image sensor disposed on the detection surface and configured to capture a first image corresponding to light emission of the infrared light source and along the normal direction;
a second image sensor disposed on the detection surface offsetting a predetermined distance from the first image sensor along a Z-axis and configured to capture a second image corresponding to the light emission of the infrared light source and along the normal direction; and
a processing unit configured tocalculate an X-axis coordinate according to a position of a pointer image in the first image or a pointer image in the second image,calculate a Y-axis coordinate according to a disparity of the pointer images in the first image and the second image, andidentify a click event of the Z-axis when a size difference of the pointer images between the first image and the second image is larger than or equal to a difference threshold.
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Abstract
There is provided a gesture detection device including two linear image sensor arrays and a processing unit. The processing unit is configured to compare sizes of pointer images in the image frames captured by the two linear image sensor arrays in the same period or different periods so as to identify a click event.
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Citations
13 Claims
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1. A gesture detection device, comprising:
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a detection surface having a normal direction; an infrared light source configured to emit light alternatively in a first brightness value and a second brightness value, wherein the second brightness value is zero or nonzero brightness; a first image sensor disposed on the detection surface and configured to capture a first image corresponding to light emission of the infrared light source and along the normal direction; a second image sensor disposed on the detection surface offsetting a predetermined distance from the first image sensor along a Z-axis and configured to capture a second image corresponding to the light emission of the infrared light source and along the normal direction; and a processing unit configured to calculate an X-axis coordinate according to a position of a pointer image in the first image or a pointer image in the second image, calculate a Y-axis coordinate according to a disparity of the pointer images in the first image and the second image, and identify a click event of the Z-axis when a size difference of the pointer images between the first image and the second image is larger than or equal to a difference threshold. - View Dependent Claims (2, 3, 4)
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5. A gesture detection device, comprising:
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a detection surface having a normal direction; an infrared light source configured to emit light alternatively in a first brightness value and a second brightness value, wherein the second brightness value is zero or nonzero brightness; a first image sensor disposed on the detection surface and configured to capture first images corresponding to light emission of the infrared light source and along the normal direction; a second image sensor disposed on the detection surface parallel to the first image sensor and configured to capture second images corresponding to the light emission of the infrared light source and along the normal direction; and a processing unit configured to calculate an X-axis coordinate according to a position of a pointer image in the first images or a pointer image in the second images, calculate a Y-axis coordinate according to a disparity of the pointer images in the first images and the second images, and identify a click event when a size variation of the pointer images between the first images captured at different times and/or between the second images captured at different times is larger than or equal to a variation threshold. - View Dependent Claims (6, 7, 8)
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9. A gesture detection device, comprising:
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a detection surface having a normal direction; an infrared light source configured to emit light alternatively in a first brightness value and a second brightness value, wherein the second brightness value is zero or nonzero brightness; a first image sensor disposed on the detection surface and configured to capture a first image corresponding to light emission and along the normal direction; a second image sensor disposed on the detection surface parallel to the first image sensor and configured to capture a second image corresponding to the light emission of the infrared light source and along the normal direction; a third image sensor disposed on the detection surface offsetting a predetermined distance from the first image sensor and the second image sensor along a Z-axis and configured to capture a third image corresponding to the light emission of the infrared light source and along the normal direction; and a processing unit configured to calculate a two-dimensional coordinate according to the first image and the second image, and identify a click event of the Z-axis when a size difference between a pointer image in the first image and a pointer image in the third image or between a pointer image in the second image and the pointer image in the third image is larger than or equal to a difference threshold. - View Dependent Claims (10, 11, 12, 13)
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Specification