Display device and control method thereof

A method for controlling a display apparatus, the method comprising:

• based on an occurrence of a pre-set event, obtaining an image through a camera of the display apparatus while content is being output through a display of the display apparatus;
• determining, based on a plurality of first pixel values corresponding to a facial area of a user identified in the obtained image and a plurality of second pixel values corresponding to the content displayed through the display, whether to perform filtering on the obtained image;
• based on determining that filtering is to be performed on the obtained image, obtaining a corrected image by performing filtering on the obtained image based on the plurality of second pixel values;
• and
• identifying a biometric signal of the user based on the corrected image.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a display apparatus, cause the one or more processors to:

• based on an occurrence of a pre-set event, obtain an image through a camera of the display apparatus while content is being output through a display of the display apparatus;
• determine, based on a plurality of first pixel values corresponding to a facial area of a user identified in the obtained image and a plurality of second pixel values corresponding to the content, whether to perform filtering on the obtained image;
• based on a determination that filtering is to be performed on the obtained image, obtain a corrected image by performing filtering on the obtained image based on the plurality of second pixel values;
• and
• identify a biometric signal of the user based on the corrected image.