A driver assistance apparatus for use in a vehicle, the driver assistance apparatus comprising: a sensor configured to detect obstacles around the vehicle; a plurality of indicator output units disposed at different positions on the vehicle; and a processor configured to: detect an obstacle around the vehicle and a position of the obstacle from the vehicle, determine an indicator image of an indicator, control at least one of the indicator output units to display the indicator to the obstacle, at a position outside the vehicle and with a display characteristic, determined according to the position of the obstacle, detect the position of the obstacle from the vehicle changing, and control at least one of the indicator output units to change at least one of the position and the display characteristic of the indicator according to the changing position of the obstacle, the processor further configured to: determine, using a camera or a door sensor in the vehicle, a driver or a passenger getting out of the vehicle, and control at least one of the indicator output units to display the indicator according to the position of the obstacle and a direction of the driver or the passenger getting out of the vehicle. a sensor configured to detect obstacles around the vehicle; a plurality of indicator output units disposed at different positions on the vehicle; and a processor configured to: detect an obstacle around the vehicle and a position of the obstacle from the vehicle, determine an indicator image of an indicator, control at least one of the indicator output units to display the indicator to the obstacle, at a position outside the vehicle and with a display characteristic, determined according to the position of the obstacle, detect the position of the obstacle from the vehicle changing, and control at least one of the indicator output units to change at least one of the position and the display characteristic of the indicator according to the changing position of the obstacle, the processor further configured to: determine, using a camera or a door sensor in the vehicle, a driver or a passenger getting out of the vehicle, and control at least one of the indicator output units to display the indicator according to the position of the obstacle and a direction of the driver or the passenger getting out of the vehicle. detect an obstacle around the vehicle and a position of the obstacle from the vehicle, determine an indicator image of an indicator, control at least one of the indicator output units to display the indicator to the obstacle, at a position outside the vehicle and with a display characteristic, determined according to the position of the obstacle, detect the position of the obstacle from the vehicle changing, and control at least one of the indicator output units to change at least one of the position and the display characteristic of the indicator according to the changing position of the obstacle, the processor further configured to: determine, using a camera or a door sensor in the vehicle, a driver or a passenger getting out of the vehicle, and control at least one of the indicator output units to display the indicator according to the position of the obstacle and a direction of the driver or the passenger getting out of the vehicle. determine, using a camera or a door sensor in the vehicle, a driver or a passenger getting out of the vehicle, and control at least one of the indicator output units to display the indicator according to the position of the obstacle and a direction of the driver or the passenger getting out of the vehicle.