Viewing angle improvement of integral imaging three- dimensional display system using horizontal and vertical multi-directional projections and elemental image rearranging method with pepper and salt noise reduction

This paper presents the viewing angle improvement of integral imaging (II) three-dimensional (3D) display system using horizontal and vertical multi-directional projections and elemental image (EI) rearranging method with pepper and salt noise reduction. Through this way, each elemental lens of micro lens array gathers horizontal and vertical multi-directional illuminations of multiple EI sets and produces multiple point light sources (PLSs) at the different positions in the focal plane and the positions of PLSs can be controlled by the projection angles. The viewing region is comprised of multiple diverging ray bundles that is broader than the conventional method owing to horizontal and vertical multi-directional projections of multiple EI sets. On the other hand, a conventional system provides a viewing area using only a single set of horizontal or vertical multidirectional EI projection. As a result, the viewing angle and the image quality of the 3D reconstructed image is enhanced.