Mobile robot and method of controlling mobile robot

A mobile robot comprising:

• a driver configured to move a main body;
• an image obtainer configured to obtain an image of surroundings and far and near distances between the main body and an obstacle;
• and
• a controller configured to analyze the image and the far and near distances obtained by the image obtainer and to determine whether the obstacle is present near the main body,
• wherein the controller determines whether the obstacle is a mat-type obstacle,
• wherein, upon determining that the obstacle is a mat-type obstacle, the controller calculates a planar area of the mat-type obstacle, and determines a climbing operation or an avoidance operation of the main body based on the planar area of the mat-type obstacle,
• wherein the controller determines a change in shape of the mat-type obstacle based on an
• image of the mat-type obstacle while the main body is climbing the mat-type obstacle, and wherein, when the change in the shape of the mat-type obstacle exceeds a predetermined reference level, the controller controls the driver such that the main body stops climbing the mat-type obstacle and avoids the mat-type obstacle.