Abstract
This paper proposes the method and system to invisibly embed
the depth data of a target object into the image captured with a camera
at the same timing as taking its shot. The proposed system consists
of a projector to throw the illumination light wherein the invisible
periodical pattern has been contained, and a camera to take a shot
of target object. The projector and camera were aligned so that these
devices could be positioned in different depths along the z-coordinate.
This kind of alignment enables us to set the spatial frequency of
the invisible periodical pattern superimposed onto the image of target
object taken with the camera, changeable depending on the depth of
the target object. This kind of spatial frequency determined depending
on the depth of the object allow us to estimate the depth of target
object taken with the camera, based on the spatial frequency of the
periodical pattern being taken with the camera at the same time. Based
on the fundamental study described above, since this paper allows
us to estimate the spatial frequency of the periodical pattern contained
in the image being taken with the camera, we are enabled to simultaneously
generate the depth map of the 2D image being captured. A 3D image
could thus be constituted with the captured 2D image combined with
the depth map generated. The proposed new techniques, employing a
traditional -D image format without any modification, are advantageous
in easiness of transferring and storing the 3D images over the conventional
3D image generations.
© 2014 IEEE
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