DEFOGGING SYSTEM

A defogging system includes: a vehicle speed sensor configured to detect a vehicle speed; a first heater arranged outside a field of view of an imaging device and configured to heat a window; a second heater arranged inside the field of view of the imaging device, arranged to be in contact with the window, and configured to heat the window; and a controller configured to control the first heater and the second heater. The controller is configured to determine whether the vehicle is stopped based on a detection result of the vehicle speed sensor, activate the first heater and the second heater in a case where a first condition is satisfied, the first condition including a condition that the vehicle is stopped, and activate only the first heater in a case where a second condition is satisfied, the second condition including a condition that the vehicle is traveling.