<s>
A	O
planar	B-Algorithm
Fourier	I-Algorithm
capture	I-Algorithm
array	I-Algorithm
(	O
PFCA	O
)	O
is	O
a	O
tiny	O
camera	O
that	O
requires	O
no	O
mirror	O
,	O
lens	O
,	O
focal	O
length	O
,	O
or	O
moving	O
parts	O
.	O
</s>
<s>
It	O
is	O
composed	O
of	O
angle-sensitive	B-Algorithm
pixels	I-Algorithm
,	O
which	O
can	O
be	O
manufactured	O
in	O
unmodified	O
CMOS	B-Device
processes	O
.	O
</s>
<s>
Angle-sensitive	B-Algorithm
pixels	I-Algorithm
have	O
a	O
sensitivity	O
to	O
light	O
that	O
is	O
sinusoidal	O
in	O
incident	O
angle	O
along	O
the	O
optically-sensitive	O
axis	O
,	O
which	O
can	O
be	O
interpreted	O
as	O
measuring	O
one	O
component	O
of	O
the	O
2D	O
Fourier	O
transform	O
of	O
the	O
far-away	O
scene	O
.	O
</s>
<s>
The	O
transform	O
is	O
closer	O
to	O
a	O
Hartley	B-Algorithm
transform	I-Algorithm
,	O
but	O
even	O
this	O
correspondence	O
is	O
not	O
exact	O
.	O
</s>
