Electronic apparatus for adjusting projection region based on projection image and control method thereof

An electronic device that projects a projection image, the electronic device comprising:

• a communication interface;
• a projector configured to project the projection image;
• a camera configured to capture an image of a region on which the projection image is projected;
• a memory configured to store at least one instruction;
• and
• a processor configured to execute the at least one instruction to:
• control the projector to project a first test projection image including at least one marker of a first color while an external device projects a second test projection image including at least one marker of a second color that is different from the first color,
• obtain, through the camera, a captured image by capturing an image of projection regions on which the first test projection image and the second test projection image are projected while a projection region of the projection regions on which at least one of the first test projection image or the second test projection image is projected is changed, and
• identify an overlapping region between the first test projection image and the second test projection image based on at least one of (i) a third marker of a third color or (ii) the marker of the first color and the marker of the second color, the marker of the third color being the marker of the first color and the marker of the second color overlapping each other, and the third color being different from the first color and the second color,
• wherein the processor is configured to execute the at least one instruction to:
• based on the overlapping region being identified, obtain temperature information of the electronic device and temperature information of the external device, and
• control the projector to project a projection image on a region other than the overlapping region among the projection regions.

A control method of an electronic device that projects a projection image, the control method comprising:

• projecting, by the electronic device, a first test projection image including at least one marker of a first color while an external device projects a second test projection image including at least one marker of a second color that is different from the first color;
• obtaining a captured image of projection regions on which the first test projection image and the second test projection image are projected while a projection region of the projection regions on which at least one of the first test projection image or the second test projection image is projected is changed;
• and
• identifying an overlapping region between the first test projection image and the second test projection image based on at least one of (i) a third marker of a third color or (ii) the marker of the first color and the marker of the second color, in the captured image, the marker of the third color being the marker of the first color and the marker of the second color overlapping each other, and the third color being different from the first color and the second color,
• wherein the control method further comprises:
• based on identifying that the first test projection image and the second test projection image overlap each other, identifying a distance between the external device and the electronic device based on the marker of the third color,
• outputting first audio and transmitting, to the external device, a control instruction for controlling the external device to output second audio based on identifying that the distance between the external device and the electronic device is equal to or larger than a predetermined distance, and
• outputting third audio and transmitting, to the external device, a control instruction for controlling the external device to output the third audio based on identifying that the distance between the external device and the electronic device is smaller than the predetermined distance.