<s>
OpenCV	B-Language
(	O
Open	O
Source	O
Computer	B-Application
Vision	I-Application
Library	B-Library
)	O
is	O
a	O
library	B-Library
of	O
programming	O
functions	O
mainly	O
for	O
real-time	B-General_Concept
computer	B-Application
vision	I-Application
.	O
</s>
<s>
The	O
library	B-Library
is	O
cross-platform	B-Operating_System
and	O
licensed	O
as	O
free	B-License
and	I-License
open-source	I-License
software	I-License
under	O
Apache	B-Application
License	I-Application
2	O
.	O
</s>
<s>
Starting	O
in	O
2011	O
,	O
OpenCV	B-Language
features	O
GPU	B-Architecture
acceleration	O
for	O
real-time	B-General_Concept
operations	O
.	O
</s>
<s>
Officially	O
launched	O
in	O
1999	O
the	O
OpenCV	B-Language
project	O
was	O
initially	O
an	O
Intel	O
Research	O
initiative	O
to	O
advance	O
CPU-intensive	O
applications	O
,	O
part	O
of	O
a	O
series	O
of	O
projects	O
including	O
real-time	B-General_Concept
ray	B-Algorithm
tracing	I-Algorithm
and	O
3D	B-Algorithm
display	I-Algorithm
walls	O
.	O
</s>
<s>
The	O
main	O
contributors	O
to	O
the	O
project	O
included	O
a	O
number	O
of	O
optimization	O
experts	O
in	O
Intel	O
Russia	O
,	O
as	O
well	O
as	O
Intel	O
's	O
Performance	O
Library	B-Library
Team	O
.	O
</s>
<s>
In	O
the	O
early	O
days	O
of	O
OpenCV	B-Language
,	O
the	O
goals	O
of	O
the	O
project	O
were	O
described	O
as	O
:	O
</s>
<s>
The	O
first	O
alpha	O
version	O
of	O
OpenCV	B-Language
was	O
released	O
to	O
the	O
public	O
at	O
the	O
IEEE	O
Conference	O
on	O
Computer	B-Application
Vision	I-Application
and	O
Pattern	O
Recognition	O
in	O
2000	O
,	O
and	O
five	O
betas	O
were	O
released	O
between	O
2001	O
and	O
2005	O
.	O
</s>
<s>
The	O
second	O
major	O
release	O
of	O
the	O
OpenCV	B-Language
was	O
in	O
October	O
2009	O
.	O
</s>
<s>
OpenCV2	O
includes	O
major	O
changes	O
to	O
the	O
C++	B-Language
interface	O
,	O
aiming	O
at	O
easier	O
,	O
more	O
type-safe	O
patterns	O
,	O
new	O
functions	O
,	O
and	O
better	O
implementations	O
for	O
existing	O
ones	O
in	O
terms	O
of	O
performance	O
(	O
especially	O
on	O
multi-core	O
systems	O
)	O
.	O
</s>
<s>
In	O
August	O
2012	O
,	O
support	O
for	O
OpenCV	B-Language
was	O
taken	O
over	O
by	O
a	O
non-profit	O
foundation	O
OpenCV.org,	O
which	O
maintains	O
a	O
developer	O
and	O
user	O
site	O
.	O
</s>
<s>
In	O
May	O
2016	O
,	O
Intel	O
signed	O
an	O
agreement	O
to	O
acquire	O
Itseez	O
,	O
a	O
leading	O
developer	O
of	O
OpenCV	B-Language
.	O
</s>
<s>
In	O
July	O
2020	O
,	O
OpenCV	B-Language
announced	O
and	O
began	O
a	O
Kickstarter	O
campaign	O
for	O
the	O
,	O
a	O
series	O
of	O
hardware	O
modules	O
and	O
additions	O
to	O
OpenCV	B-Language
supporting	O
Spatial	O
AI	O
.	O
</s>
<s>
OpenCV	B-Language
's	O
application	O
areas	O
include	O
:	O
</s>
<s>
To	O
support	O
some	O
of	O
the	O
above	O
areas	O
,	O
OpenCV	B-Language
includes	O
a	O
statistical	O
machine	O
learning	O
library	B-Library
that	O
contains	O
:	O
</s>
<s>
OpenCV	B-Language
is	O
written	O
in	O
the	O
programming	O
language	O
C++	O
,	O
as	O
is	O
its	O
primary	O
interface	O
,	O
but	O
it	O
still	O
retains	O
a	O
less	O
comprehensive	O
though	O
extensive	O
older	O
C	B-Language
interface	O
.	O
</s>
<s>
All	O
newer	O
developments	O
and	O
algorithms	O
appear	O
in	O
the	O
C++	B-Language
interface	O
.	O
</s>
<s>
There	O
are	O
language	B-Application
bindings	I-Application
in	O
Python	B-Language
,	O
Java	B-Language
,	O
and	O
MATLAB/Octave	O
.	O
</s>
<s>
The	O
application	O
programming	O
interface	O
(	O
API	B-General_Concept
)	O
for	O
these	O
interfaces	O
can	O
be	O
found	O
in	O
the	O
online	O
documentation	O
.	O
</s>
<s>
Wrapper	B-Library
libraries	I-Library
in	O
several	O
languages	O
have	O
been	O
developed	O
to	O
encourage	O
adoption	O
by	O
a	O
wider	O
audience	O
.	O
</s>
<s>
In	O
version	O
3.4	O
,	O
JavaScript	B-Language
bindings	O
for	O
a	O
selected	O
subset	O
of	O
OpenCV	B-Language
functions	O
were	O
released	O
as	O
OpenCV.js	O
,	O
to	O
be	O
used	O
for	O
web	O
platforms	O
.	O
</s>
<s>
If	O
the	O
library	B-Library
finds	O
Intel	O
's	O
Integrated	B-Language
Performance	I-Language
Primitives	I-Language
on	O
the	O
system	O
,	O
it	O
will	O
use	O
these	O
proprietary	O
optimized	O
routines	O
to	O
accelerate	O
itself	O
.	O
</s>
<s>
A	O
Compute	B-Architecture
Unified	I-Architecture
Device	I-Architecture
Architecture	I-Architecture
(	O
CUDA	B-Architecture
)	O
based	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
(	O
GPU	B-Architecture
)	O
interface	O
has	O
been	O
in	O
progress	O
since	O
September	O
2010	O
.	O
</s>
<s>
An	O
OpenCL-based	O
GPU	B-Architecture
interface	O
has	O
been	O
in	O
progress	O
since	O
October	O
2012	O
,	O
documentation	O
for	O
version	O
2.4.13.3	O
can	O
be	O
found	O
at	O
docs.opencv.org	O
.	O
</s>
<s>
OpenCV	B-Language
runs	O
on	O
the	O
desktop	B-General_Concept
operating	I-General_Concept
systems	I-General_Concept
:	O
Windows	B-Application
,	O
Linux	B-Application
,	O
macOS	B-Application
,	O
FreeBSD	B-Operating_System
,	O
NetBSD	B-Device
and	O
OpenBSD	B-Operating_System
as	O
well	O
as	O
mobile	O
operating	B-General_Concept
systems	I-General_Concept
:	O
Android	B-Application
,	O
iOS	B-Application
,	O
Maemo	B-Operating_System
,	O
BlackBerry	B-Application
10	I-Application
and	O
QNX	B-Operating_System
.	O
</s>
<s>
The	O
user	O
can	O
get	O
official	O
releases	O
from	O
SourceForge	B-Application
or	O
take	O
the	O
latest	O
sources	O
from	O
GitHub	B-Application
.	O
</s>
<s>
OpenCV	B-Language
uses	O
CMake	B-Language
.	O
</s>
