Warning apparatus and warning method

A warning apparatus comprising:

• a first image acquisition unit configured to acquire a first image photographed by a far-infrared camera which performs photographing in an advancing direction of a vehicle;
• a second image acquisition unit configured to acquire a second image photographed by a visible light camera which performs photographing in a direction agreeing with a direction of the far-infrared camera;
• a detection unit configured to detect an object as a warning target for a driver of the vehicle from the first image acquired by the first image acquisition unit;
• a range specification unit configured to specify a first object range which is a range indicating the object detected in the first image and to specify a second object range in the second image, the second object range corresponding to the first object range, in a case where the detection unit detects the object as the warning target;
• and
• a display control unit configured to cause a display unit, by which the driver of the vehicle is capable of visual observation of the second image, to display the second image in which the second object range is drawn.