An image processing apparatus includes an unconscious expression parameter storing unit configured to store a parameter specifying a facial expression that unconsciously appears in a steady state as an unconscious expression parameter, a conscious expression parameter storing unit configured to store a parameter specifying a facial expression that is consciously expressed from the steady state as a conscious expression parameter, a mixing unit configured to generate face model data by mixing the unconscious expression parameter and the conscious expression parameter, and a rendering unit configured to render a facial expression on the basis of the face model data.