US 2025/0093997 A1 · PROJECTOR AND METHOD FOR IDENTIFYING TOUCH INPUT THEREOF

Abstract

A projector is provided. The projector includes: a projection part including a light source configured to project an image, an infrared emitter comprising circuitry configured to emit infrared ray to a projection area where the image is projected, an infrared camera module including an infrared camera configured to generate an image by photographing the projection area using an image sensor, a memory storing correction data including correction values for correcting brightness of the image, and at least one processor configured to: correct brightness of an image obtained through the infrared camera module using the correction data, and identify whether a touch input for the projected image is entered based on the corrected brightness, wherein the correction data is generated based on first correction data and second correction data, the first correction data includes correction values for correcting a decrease in intensity of the infrared ray according to a distance from the infrared emitter, and the second correction data includes correction values for correcting lens shading.

Claims18

Dependent claims

A projector comprising:

a projection part comprising a light source configured to project an image;
an infrared emitter comprising circuitry configured to output an infrared ray to a projection area where the image is projected;
an infrared camera module comprising an infrared camera configured to generate an image by photographing the projection area using an image sensor;
a memory storing correction data including correction values for correcting brightness of the image;
and
at least one processor configured to:
correct brightness of an image obtained through the infrared camera module using the correction data, and identify whether a touch input for the projected image is entered based on the corrected brightness,
wherein the correction data is generated based on first correction data and second correction data;
wherein the first correction data includes correction values for correcting a decrease in intensity of the infrared ray according to a distance from the infrared emitter;
and
wherein the second correction data includes correction values for correcting lens shading.

8 more elements

A method of identifying a touch input of a projector, the method comprising:

projecting an image;
outputting infrared ray to a projection area where the image is projected using an infrared emitter;
generating an image by photographing the projection area using an infrared camera module including an infrared camera;
correcting brightness of the image obtained through the infrared camera module using the correction data;
and
identifying whether a touch input for the projected image is entered based on the corrected brightness,
wherein the correction data is generated based on first correction data and second correction data;
wherein the first correction data includes correction values for correcting a decrease in intensity of the infrared ray according to a distance from the infrared emitter;
and
wherein the second correction data includes correction values for correcting lens shading.

7 more elements

A non-transitory computer-readable medium storing computer instructions that, when executed by at least one processor of a projector, cause the projector to perform operations comprising:

projecting an image;
outputting infrared ray to a projection area where the image is projected using an infrared emitter;
generating an image by photographing the projection area using an infrared camera module including an infrared camera;
correcting brightness of the image obtained through the infrared camera module using the correction data;
and
identifying whether a touch input for the projected image is entered based on the corrected brightness,
wherein the correction data is generated based on first correction data and second correction data;
wherein the first correction data includes correction values for correcting a decrease in intensity of the infrared ray according to a distance from the infrared emitter;
and
wherein the second correction data includes correction values for correcting lens shading.

7 more elements

Dependencies are inferred from the claim text.

Projector and method for identifying touch input thereof

Life of this patent

Projector and method for identifying touch input thereof

Life of this patent

Abstract

Claims18