Electronic device and method for operating the same

An electronic device, comprising:

• memory storing information about a reference image;
• a camera;
• a communication unit comprising communication circuitry;
• and
• at least one processor, comprising processing circuitry, connected to the camera, wherein at least one processor, individually and/or collectively, is configured to:
• obtain a captured image by capturing a first corrected image projected onto a screen by an image projection device using the camera;
• receive first keystone correction information from the image projection device through the communication unit;
• generate second keystone correction information based on information about positions of at least four first markers included in the reference image, information about positions of at least four second markers included in the captured image, and the first keystone correction information;
• and
• transmit the second keystone information to the image projection device through the communication unit,
• wherein the first corrected image includes an image obtained by correcting the reference image based on the first keystone correction information, and
• wherein the at least four second marker is disposed at positions corresponding to the positions of the at least four first markers.

A method for operating an image projection device, the method comprising:

• projecting a first corrected image generated based on first keystone correction information and a reference image, onto a screen;
• receiving, from a user device, a captured image obtained by capturing the first corrected image projected onto the screen;
• generating second keystone correction information based on information about positions of at least four first markers included in the reference image, information about positions of at least four second markers included in the captured image, and the first keystone correction information;
• and
• projecting a second corrected image generated based on the second keystone correction information and the reference image,
• wherein the at least four second marker is disposed at positions corresponding to the positions of the at least four first markers.