1. A shape recognition device comprising: an outer shape detection unit that detects an outer shape of a hand; a reference point extraction unit that extracts a central point of a maximum inscribed circle of the detected outer shape as a reference point; a distance measurement unit that measures a distance between the reference point and each of a plurality of outer shape points on the outer shape; and a feature recognition unit that determines a feature part of the outer shape from the plurality of outer shape points on the basis of the distance, wherein the plurality of outer shape points on the outer shape are set at predetermined intervals along the outer shape, wherein the reference point extraction unit sets a defined chord of the maximum inscribed circle that passes through the reference point, and sets the plurality of outer shape points at a predetermined interval on the defined chord, wherein the outer shape detection unit determines a point on a surface of the hand that corresponds to a depth level of a target point with respect to a palm of the hand, or the outer shape detection unit determines a point on a surface of the hand that corresponds to a depth level of a target point with respect to a finger of the hand, and wherein the outer shape detection unit determines a palmar side of the hand or a dorsal side of the hand based on the depth level.