| 摘要 |
An inputter (51) inputs a captured image of a hand captured by a camera (2). An acquirer (52) acquires information indicating the distance between the camera (2) and the hand. A storer (4) stores reference data for specifying a hand gesture and a command corresponding to the gesture, for each distance between the camera (2) and the hand. A selector (53) selects, from among the reference data stored in the storer (4), reference data corresponding to the distance indicated by the information acquired by the acquirer (52). A specifier (54) refers to the reference data selected by the selector (53), specifies a hand gesture in the captured image input by the inputter (51), and specifies a command corresponding to the specified gesture. |
