Electronic device and operating method thereof

A method of operating an electronic device, the method comprising:

• obtaining a first captured image of a display device in a state of outputting a first image to a screen area;
• obtaining a second captured image of the display device in a state in which the screen area is turned off;
• obtaining a second operation image by extracting a value component from the first captured image;
• obtaining a third operation image in which a value component has been extracted from the second captured image;
• and
• identifying the screen area based on a result image obtained by performing a second operation on the second operation image and the third operation image.

A non-transitory computer readable medium having instructions stored therein, which when executed by at least one processor cause the at least one processor to execute a method of operating an electronic device, the method comprising:

• obtaining a first captured image of a display device in a state of outputting a first image to a screen area;
• obtaining a second captured image of the display device in a state in which the screen area is turned off;
• obtaining a second operation image by extracting a value component from the first captured image;
• obtaining a third operation image in which a value component has been extracted from the second captured image;
• and
• identifying the screen area based on a result image obtained by performing a second operation on the second operation image and the third operation image.

An electronic device comprising:

• at least one memory storing one or more instructions;
• and
• one or more processors configured to execute the one or more instructions, wherein the one or more instructions, when executed by the one or more processors, cause the electronic device to:
• obtain a first captured image of a display device in a state of outputting a first image to a screen area,
• obtain a second captured image of the display device in a state in which the screen area is turned off,
• identify difference information based on a comparison of the first captured image and the second captured image, and
• identify the screen area based on the difference information.