US 2010/0245654 A1Published application

Image pickup device, image reproducing device, and image pickup method

AssigneeEmpire Technology Development LLC

InventorTomoaki Ueda

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Abstract

An image pickup device includes an image pickup unit including an n number of photodetectors and an n number of lenses, and outputting signals corresponding to the respective photodetectors, the lenses being provided in a one-to-one correspondence with the photodetectors and being provided so that light is incident upon only the respective photodetectors; a sensitivity coefficient storage section that stores information for determining sensitivity coefficients of the photodetectors; and an image reproducing section that reproduces an image using the signals that are output by the image pickup unit and the sensitivity coefficients that are determined on the basis of the information stored in the sensitivity coefficient storage section. In a model in which light from imaginary light spots is received by the respective photodetectors, using the output signals and the sensitivity coefficients corresponding to the respective photodetectors, the image reproducing section estimates light beams of the respective imaginary light spots, and using brightness values corresponding thereto as brightness values of respective pixels of an image corresponding to an image pickup area, the image reproducing section reproduces an image.

Claims10

Dependent claims

An image pickup device comprising:

an image pickup unit including an n number of photodetectors and an n number of lenses (where n>=2), the lenses being provided in a one-to-one correspondence with the photodetectors, the lenses being provided so that light is incident upon only the respective photodetectors, the image pickup unit outputting signals corresponding to the respective photodetectors;
a sensitivity coefficient storage section that stores information for determining sensitivity coefficients of the photodetectors;
and
an image reproducing section that reproduces an image using the signals that are output by the image pickup unit and the sensitivity coefficients that are determined on the basis of the information stored in the sensitivity coefficient storage section,
wherein the image reproducing section includes:
part for obtaining the signals that are output by the image pickup unit;
part for setting a plurality of imaginary light spots in an image pickup area so that a number m of imaginary light spots the number n of photodetectors;
part for determining the sensitivity coefficient corresponding to each imaginary light spot for each photodetector on the basis of the information stored in the sensitivity coefficient storage section;
part for determining ui so that Eev determined by the following formula is equal to or less than a threshold value ε:
E
ev
=
∑
j
=
1
n


r
ij
2
·
(
S
j
-
∑
i
=
1
m


α
ij
·
u
i
)
2
where a light beam of an imaginary light spot i is ui, the sensitivity coefficient of a photodetector j corresponding to the imaginary light spot i is αij, the distance between the imaginary light spot i and the photodetector j is rij, and the signal corresponding to the photodetector j that is output by the image pickup unit is Sj;
and
part for forming and outputting the image using the determined ui.

41 more elements

An image pickup device comprising:

an image pickup unit including an n number of photodetectors and an n number of lenses (where n>=2), the lenses being provided in a one-to-one correspondence with the photodetectors, the image pickup unit outputting signals corresponding to the respective photodetectors;
a sensitivity coefficient storage section that stores information for determining sensitivity coefficients of the photodetectors;
and
an image reproducing section that reproduces an image using the signals that are output by the image pickup unit and the sensitivity coefficients that are determined on the basis of the information stored in the sensitivity coefficient storage section,
wherein the image reproducing section includes:
part for obtaining the signals that are output by the image pickup unit;
part for setting a plurality of imaginary light spots in an image pickup area so that a number m of imaginary light spots the number n of photodetectors;
part for determining the sensitivity coefficient corresponding to each imaginary light spot for each photodetector on the basis of the information stored in the sensitivity coefficient storage section;
part for determining ui so that Eev determined by the following formula is equal to or less than a threshold value ε:
E
ev
=
∑
j
=
1
n


r
ij
2
·
(
S
j
-
∑
i
=
1
m


α
ij
·
u
i
)
2
where a light beam of an imaginary light spot i is ui, the sensitivity coefficient of a photodetector j corresponding to the imaginary light spot i is αij, the distance between the imaginary light spot i and the photodetector j is rij, and the signal corresponding to the photodetector j that is output by the image pickup unit is Sj;
and
part for forming and outputting the image using the determined ui.

41 more elements

Dependencies are inferred from the claim text.