Head-mounted display device for processing images obtained from different types of cameras and operating method thereof

An operating method of a head-mounted display (HMD) device, the operating method comprising:

• obtaining a plurality of images having different fields of view (FOVs) captured by a plurality of cameras of different types);
• extending, based on a first FOV of a first image among the plurality of images, an FOV of a second image having a second FOV smaller than the first FOV;
• obtaining a spatial image including depth information by using the first image and the second image with the extended FOV;
• and displaying the obtained spatial image.

A mobile device for processing images obtained from different types of cameras, the mobile device comprising:

• a plurality of cameras configured to obtain images having different fields of view (FOVs);
• memory storing one or more instructions;
• at least one processor;
• and a communication interface configured to pair with an external device to transmit and receive data, wherein the one or more instructions, when executed by the at least one processor individually or collectively, causes the mobile device to:
• obtain a first image through a first camera, from among the plurality of cameras, having a first FoV;
• obtain a second image through a second camera, from among the plurality of cameras, having a second FoV smaller than the first FoV;
• extend an FoV of the second image based on the first FoV of the first image;
• obtain a spatial image including depth information by using the first image and the second image with the extended FoV;
• and transmit the spatial image to the paired external device through the communication interface.