Method of recognizing gesture by using wearable device and the wearable device

A wearable device worn by a user and configured to recognize a user gesture, the wearable device comprising:

• a plurality of electromyography sensors;
• a memory storing one or more instructions;
• and
• a processor configured to:
• identify a trigger gesture of the wearable device, the trigger gesture being a gesture that activates one or more inactive electromyography sensors;
• obtain a electromyographic signal set from the plurality of electromyography sensors, based on a movement of the user's body for the identified trigger gesture;
• obtain at least one output value by using one or more electromyographic signals from among the obtained electromyographic signal set, as an input to a gesture recognition model;
• select, based on the obtained at least one output value, at least one active electromyography sensor to recognize the user gesture when the wearable device is in a standby mode;
• control to activate the selected at least one active electromyography sensor based on the wearable device being in the standby mode;
• recognize the user gesture by using the activated at least one active electromyography sensor based on the wearable device being in the standby mode;
• and
• activate the selected at least one active electromyography sensor and other electromyography sensors together among the plurality of electromyography sensors, based on a comparison between the recognized user gesture and the trigger gesture.