Abstract
We have been conducting research with the objective of achieving three-dimensional (3D) television using integral photography. Extremely high-resolution (EHR) elemental images are necessary to enhance integral 3D image quality. Presently, projection display systems are practical for displaying EHR images and have some advantages for 3D imaging. However, any geometric distortion of the projection lens will cause a positional error between the elemental images and elemental lenses. This positional error subsequently results in a distortion of the reconstructed image and a smaller viewing area. We theoretically and experimentally analyzed the effects of distorted elemental images on a reconstructed image. As a result, a slight distortion of the projection lens, which is proportional to the square of the image height, caused a positional error of the reconstructed 3D image. The depth-direction error of the reconstructed image was larger than that of the lateral direction. Furthermore, the viewing area decreased due to the distortion of the elemental images. From experimental results using a projection-type integral system, we found that image processing for distortion compensation is effective in eliminating distortion and improving the viewing area of the reconstructed 3D image.
