could be reconstructed if one would not consider that the new
elemental images must contain direction information of the 3-D
object. A simple ray sampling analysis of the pickup procedure
provides the rule to make new elemental images with intensity
and correct direction information for a good 3-D reconstruction.
Our experimental results help us to show that 3-D integral
images reconstructed by use of the DM method have the similar
quality, seen by naked eye, as the ones reconstructed by the
OM method, even though we appreciate resolution problems.
Besides, we find that one can digitally magnify an object with
fewer elemental-image arrays and the error due to misalignment
in the optical magnification OM method is avoided.
This paper is organized as follows. In Section II we give an
overview of the optical magnification method. In Section III we
explain the digital magnification method. Experimental setup
and results are shown in Section IV and finally conclusions and
remarks of our work are presented in Section V.