Input apparatus

3:

• The input apparatus according to claim 1, wherein:
• the fingertip positions of the at least three fingers include a fingertip position of a little finger, a fingertip position of a ring finger, and a fingertip position of a thumb;
• and
• the determiner is configured to determine the reference plane based on the fingertip position of the little finger, the fingertip position of the ring finger, and the fingertip position of the thumb.

6:

• The input apparatus according to claim 1, wherein the pressed key specifier comprises:
• an estimation model configured to estimate a virtual key that is pressed, from among the plurality of virtual keys, based on:
• fingertip position data indicative of the fingertip positions of the plurality of fingers;
• palm shape data indicative of a shape of a palm;
• and
• the plurality of detection ranges;
• and
• a learner configured to reflect, to the estimation model, whether the virtual key estimated based on the estimation model is correct or incorrect.

9:

• The input apparatus according to claim 1, wherein:
• the determiner is configured to determine, based on fingertip positions of at least three fingers of a right hand in the initial state, a first reference plane corresponding to the right hand as the reference plane, and determines, based on fingertip positions of at least three fingers of a left hand in the initial state, a second reference plane corresponding to the left hand as the reference plane;
• the virtual key setter is configured to:
• set, on the first reference plane corresponding to the right hand, the plurality of detection ranges as a plurality of detection ranges for the right hand, based on a fingertip position of a specific finger of the right hand in the initial state from among the fingertip positions of the at least three fingers of the right hand, and
• set, on the second reference plane corresponding to the left hand, the plurality of detection ranges as a plurality of detection ranges for the left hand, based on a fingertip position of a specific finger of the left hand in the initial state from among the fingertip positions of the at least three fingers of the left hand;
• and
• the pressed key specifier is configured to:
• specify, according to a positional relationship between fingertip positions of a plurality of fingers of the right hand in the input operation and the plurality of detection ranges for the right hand, a virtual key that is pressed by the right hand from among the plurality of virtual keys, and
• specify, according to a positional relationship between fingertip positions of a plurality of fingers of the left hand in the input operation and the plurality of detection ranges for the left hand, a virtual key that is pressed by the left hand from among the plurality of virtual keys.

10:

• The input apparatus according to claim 2, wherein:
• the fingertip positions of the at least three fingers include a fingertip position of a little finger, a fingertip position of a ring finger, and a fingertip position of a thumb;
• and
• the determiner is configured to determine the reference plane based on the fingertip position of the little finger, the fingertip position of the ring finger, and the fingertip position of the thumb.