Importance

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Abstract

A mobile robot and a method performed by the mobile robot are provided. The mobile robot includes a main body, a plurality of wheels mounted on the main body, a blade mounted on the main body to cut grass, an optical sensor configured to generate an image with a field of view facing a front of the main body, a user interface configured to obtain a user input and provide information about an operation of the mobile robot, and at least one processor. The at least one processor is configured to identify a plurality of objects from the image obtained while the main body moves, determine an object detected for a predetermined period of time among the plurality of identified objects to be a contaminant, determine a degree of contamination of the optical sensor based on a characteristic of the contaminant and a location of the contaminant in the image, provide information corresponding to the degree of contamination of the optical sensor via the user interface, and determine an operation mode of the mobile robot based on the degree of contamination of the optical sensor.

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First Claim