Abnormal-sound detection device and abnormal-sound detection method

An abnormal-sound detection method comprising:

• capturing a video of a diagnosis object by a camera;
• extracting a feature point of the diagnosis object from the video of the diagnosis object captured by the camera;
• identifying an operation range of the diagnosis object, based on a movement range of the extracted feature point;
• collecting sounds arriving from the diagnosis object by a microphone;
• sensing a sound in which an abnormality has occurred from among the sounds collected by the microphone;
• identifying, based on the collected sound, a generation position of the sound in which the abnormality is sensed;
• and
• determining, based on the operation range and the identified generation position, whether the sound in which the abnormality is sensed is derived from the diagnosis object or derived from another element.

A non-transitory computer-readable recording medium recording an abnormal-sound detection program that causes a computer to execute:

• extracting a feature point of a diagnosis object from a video of the diagnosis object captured by a camera;
• identifying an operation range of a diagnosis object, based on a movement range of the extracted feature point;
• sensing a sound in which an abnormality has occurred from among sound collected by a microphone;
• identifying, based on the collected sound, a generation position of the sound in which the abnormality is sensed;
• and
• determining, based on the operation range and the identified generation position, whether the sound in which the abnormality is sensed is derived from the diagnosis object or derived from another element.