Display apparatus

A display apparatus comprising:

• a display unit that displays moving images corresponding to moving image data that is made up of multiple two-dimensional images and three-dimensional images that are sequentially generated chronologically;
• a touch panel that is provided on a display screen of the display unit and that receives an input of a signal corresponding to a position touched by an external object;
• a setting unit that sets, as a subject of which motion is to be tracked in the moving images displayed by the display unit, a subject that is contained in the moving images and that is specified according to an input signal that is received by the touch panel;
• a motion detector that, when the subject setting unit sets the subject to be tracked, detects motion of the subject, which is set by the subject setting unit, on the basis of successive two of the two-dimensional images or the three-dimensional images that are generated chronologically;
• and
• a display controller that, when the motion detector detects the motion of the subject to be tracked, causes the display unit to display the three-dimensional images as the moving images.