Wearable device and method for providing information in a wearable device

A method of controlling a wearable device, the method comprising:

• obtaining, by a camera of the wearable device, an image including at least a partial field of vision of a user;
• identifying, by a controller of the wearable device, an object appearing in the image obtained by the camera at a first time point;
• storing information about the identified object in a memory;
• detecting, via a microphone of the wearable device, a speech of the user using the wearable device at a second time point;
• identifying, via the controller, a word included in the detected speech of the user corresponds to the object identified in the image;
• obtaining, by a pupil camera of the wearable device, an image of a pupil of the user at a third time point;
• determining, via the controller, that the user is flustered by using an artificial neural network trained in advance so as to recognize an emotional state of the user from the image of the pupil of the user;
• retrieving, via the controller, the information about the object from the memory based on the identified word included in the detected speech;
• outputting the retrieved information about the object to the user in response to the determining that the user is flustered,
• wherein the outputting the retrieved information about the object comprises:
• when the object corresponds to a personal item of the user and the identified word corresponds to the personal aero of the user, determining, by a location processor of the wearable device, a location of the wearable device and outputting information about navigating from the determined location to a location at which the object was identified at the first time point;
• and
• when the object corresponds to a person and the identified word corresponds to the person, outputting information about the object comprising a name of the person, and a relation strip between the person and the user.