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US 10,884,518 B2Granted
Gesture detection device for detecting hovering and click
AssigneePixart Imaging Inc.
InventorsShu-Sian Yang, Han-Ping Cheng
Life of this patent
Estimating the term…
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.
Claims15
A gesture detection device, comprising:
- a detection surface having a normal direction;
- a first image sensor disposed adjacent to the detection surface and configured to capture images along the normal direction;
- a second image sensor disposed adjacent to the detection surface and offsetting a predetermined distance from the first image sensor along a Z-axis, and configured to capture images along the normal direction;
- an infrared light source configured to illuminate field of views of the first image sensor and the second image sensor, wherein the infrared light source is configured to emit light alternatively in a first brightness value and a second brightness value, wherein
- the first image sensor and the second image sensor are respectively configured to capture a bright image corresponding to the first brightness value and respectively capture a dark image corresponding to the second brightness value;
- and
- a processor configured to calculate a differential image between the bright image and the dark image captured by the first image sensor as a first image, and calculate a differential image between the bright image and the dark image captured by the second image sensor as a second image,
- wherein the detection surface has two opposite long edges extending along an X-axis and two opposite short edges extending along the Z-axis, and the first image sensor and the second image sensor are distanced by a distance along the X-axis.
5 more elements
A gesture detection device, comprising:
- a detection surface having a normal direction;
- a first image sensor disposed adjacent to the detection surface and configured to capture images along the normal direction;
- a second image sensor disposed adjacent to the detection surface parallel to the first image sensor in an X-axis and configured to capture images along the normal direction;
- an infrared light source configured to illuminate field of views of the first image sensor and the second image sensor, wherein the infrared light source is configured to emit light alternatively in a first brightness value and a second brightness value, wherein
- the first image sensor and the second image sensor are respectively configured to capture a bright image corresponding to the first brightness value and respectively capture a dark image corresponding to the second brightness value;
- and
- a processor configured to calculate a differential image between the bright image and the dark image captured by the first image sensor as first images, and calculate a differential image between the bright image and the dark image captured by the second image sensor as second images,
- wherein the detection surface has two opposite long edges extending along the X-axis and two opposite short edges extending along a Z-axis, and the first image sensor and the second image sensor are distanced by a distance along the X-axis.
5 more elements
A gesture detection device, comprising:
- a detection surface having a normal direction;
- a first image sensor disposed adjacent to the detection surface and configured to capture images along the normal direction;
- a second image sensor disposed adjacent to the detection surface parallel to the first image sensor in an X-axis and configured to capture images along the normal direction;
- a third image sensor disposed adjacent to the detection surface and offsetting a predetermined distance from the first image sensor and the second image sensor along a Z-axis, and configured to capture images along the normal direction;
- an infrared light source configured to illuminate field of views of the first image sensor, the second image sensor and the third image sensor, wherein the infrared light source is configured to emit light alternatively in a first brightness value and a second brightness value, wherein
- the first image sensor, the second image sensor and the third image sensor are respectively configured to capture a bright image corresponding to the first brightness value and respectively capture a dark image corresponding to the second brightness value;
- and
- a processor configured to calculate a differential image between the bright image and the dark image captured by the first image sensor as a first image, calculate a differential image between the bright image and the dark image captured by the second image sensor as a second image, and calculate a differential image between the bright image and the dark image captured by the third image sensor as a third image,
- wherein the detection surface has two opposite long edges extending along the X-axis and two opposite short edges extending along the Z-axis, and the first image sensor and the second image sensor are distanced by a distance along the X-axis.
6 more elements
Dependencies are inferred from the claim text.