Design conditions for attractive reality in mobile-type 3-D display

— An autostereoscopic 3-D display suitable for the mobile environment is prototyped and evaluated. First, the required conditions for a 3-D display in a mobile environment are considered, and the three major requirements are clarified: small size, viewing-position flexibility, and application support. An application of a mobile-type 3-D display should be different from that of a large-sized 3-D display because a mobile-type 3-D display cannot realize the feeling of immersion while large-sized 3-D displays can realize it easily. From this assumption, it is considered that it is important to realize the feeling to handle a 3-D image. Three types of 3-D displays are developed to satisfy these requirements. They are subjectively evaluated to confirm their attractiveness. Results of the tests show that intuitive interaction can increase the reality of the 3-D image in the sense of unity and also can improve the solidity and depth impression of the 3-D image.