Method for calibrating illuminance sensor and electronic device supporting same

A method for calibrating a light sensor in an electronic device, the method comprising:

• obtaining a first illuminance value based on illuminance data obtained through the light sensor for a first time during which a display of the electronic device is turned on and off;
• obtaining a second illuminance value based on illuminance data obtained through the light sensor for a second time shorter than the first time, while the display is turned on and off;
• determining a third illuminance value based on the first illuminance value and the second illuminance value;
• determining a fourth illuminance value based on color information about an image displayed through the display and information related to a luminance of the display;
• and
• determining a correction value for correcting an illuminance value obtained through the light sensor based on the third illuminance value and the fourth illuminance value.

An electronic device comprising:

• a display;
• a light sensor;
• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor individually or collectively, cause the electronic device to:
• while the first image is displayed through the display, determine a first illuminance value based on color information about a first image and information related to a luminance of the display and obtain a second illuminance value through the light sensor,
• while a second image different from the first image is displayed through the display, determine a third illuminance value based on color information about the second image and information related to the luminance of the display and obtain a fourth illuminance value through the light sensor, and
• determine a correction value for correcting the illuminance value obtained through the light sensor, based on a first difference between the third illuminance value and the first illuminance value and a second difference between the fourth illuminance value and the second illuminance value.