Robot cleaner and method for controlling the same

A method for controlling a robot cleaner, the method comprising:

• acquiring an image by capturing an image of surroundings through a camera while traveling;
• dividing the acquired image into a plurality of images based on a reference line;
• determining the presence or absence of a liquid based on two or more images among the plurality of images;
• and
• when it is determined that the liquid is present, displaying, on a map, an area where the liquid is present, and driving the robot cleaner to avoid the area where the liquid is present.

A method for controlling a robot cleaner, the method comprising:

• acquiring an image by capturing an image of surroundings through a camera while traveling;
• dividing the acquired image into a first image and a second image based on a reference line;
• acquiring a third image in which the second image is symmetrical with respect to the reference line;
• determining the presence or absence of a liquid based on the first image and the third image;
• and
• when it is determined that the liquid is present, displaying, on a map, an area where the liquid is present, and driving the robot cleaner to avoid the area where the liquid is present.