Electronic apparatus for compensating external areas resulting from keystone correction and controlling method thereof

An electronic apparatus comprising:

• a projector configured to project an image with a specified resolution;
• a camera;
• and
• at least one processor, comprising processing circuitry, connected to the projector and the camera;
• a memory storing instructions which, when executed individually and/or collectively by the at least one processor, controls the electronic apparatus to:
• perform keystone correction for a first image to generate a keystone-corrected first image;
• control the projector to project to a projection area an image of the specified resolution in which the keystone-corrected first image is included in one area in the projection area and a second image is included in a remaining area in the projection area;
• obtain a captured image by photographing the projection area and an external area outside of the projection area through the camera;
• adjust a pixel value of the second image in the remaining area based on first pixel information corresponding to the remaining area in the captured image and second pixel information corresponding to the external area outside of the projection area;
• and
• control the projector to project an image of the specified resolution in which the keystone-corrected first image is included in the one area in the projection area and the second image with the adjusted pixel value is included in the remaining area in the projection area.