Patent ID: 8643645

Claim:
A method of generating an elemental image, the method comprising: normalizing coordinates of dots in a frustum formed in perspective projection by mapping the dots in the frustum into dots in a cube; reversing a grade of depth of each of the dots in the cube viewed from a viewpoint using z-axis coordinates of a front-end plane and a rear-end plane of the frustum to exchange a grade of depth of a dot in the cube close to the viewpoint with a grade of depth a dot in the cube far from the viewpoint; and generating one of a plurality of two-dimensional (2D) elemental images necessary for three-dimensional (3D) display from the reversed grades of depth of the dots in the cube using one of a plurality of lenses, wherein each of the dots in the frustum and each of the dots in the cube include x-axis coordinates, y-axis coordinates, and z-axis coordinates, and the grade of depth is represented using the z-axis coordinates, and wherein the reversing the grade of depth of each of the dots in the cube comprises exchanging coordinates of a dot located in a front plane of the cube with coordinates of a dot located in a rear plane of the cube.