US 2026/0067435 A1 · IMAGE PROJECTION DEVICE AND IMAGE PROJECTION CONTROL METHOD

Abstract

An image projection device may comprise: a ToF sensor configured to measure a distance to a target; a lamp assembly configured to output an image signal including a pattern image; an operation unit which controls the lens assembly to move in one axis direction; and a processor which measures a distance to a screen by means of the ToF sensor and controls the pattern image outputted through the lamp assembly to be projected on the screen. The processor may calculate a sharpness value of the pattern image projected on the screen through the lamp assembly, and adjust the size of the pattern image and a position at which the pattern image is projected on the basis of the calculated sharpness value.

Claims20

Dependent claims

An image projection device comprising:

a time-of-flight (ToF) sensor configured to measure a distance to a target;
a lamp assembly configured to output an image signal comprising a pattern image;
an operation unit configured to control the lens assembly to move in one axial direction;
and
a processor configured to control the ToF sensor to measure a distance to a screen and the lamp assembly to project the output pattern image onto the screen,
wherein the processor is configured to
control the operation unit to move the lamp assembly based on the measured distance and a focal position from the screen,
calculate a sharpness value of the pattern image projected on the screen through the lamp assembly, and
adjust a size of the pattern image and a position on which the pattern image is projected based on the calculated sharpness value.

6 more elements

An image projection control method for controlling a pattern image to be output, performed by a processor of a projector, the method comprising:

a screen/marker detection process of detecting a screen or a marker associated with the pattern image;
an operation control process of controlling an operation unit to move a lamp assembly based on a distance to the screen measured through a time of flight (ToF) sensor and a focal position from the screen;
a sharpness value calculation process of calculating a sharpness value of the pattern image projected onto the screen through the lamp assembly;
and
a pattern image size/position adjustment process of adjusting a size of the pattern image and a position on which the pattern image is projected based on the calculated sharpness value.

2 more elements

Dependencies are inferred from the claim text.

Image projection device and image projection control method

Life of this patent

Image projection device and image projection control method

Life of this patent

Abstract

Claims20