<s>
YrWall	B-Application
is	O
a	O
Digital	O
Graffiti	O
Wall	O
developed	O
by	O
event	O
company	O
Luma	O
,	O
where	O
designs	O
are	O
created	O
on	O
a	O
large	O
wall	O
using	O
a	O
modified	O
spray	O
paint	O
can	O
.	O
</s>
<s>
The	O
can	O
contains	O
no	O
paint	O
,	O
instead	O
it	O
has	O
an	O
IR	O
light	O
which	O
is	O
tracked	O
by	O
a	O
computer	B-Application
vision	I-Application
system	O
and	O
the	O
image	O
immediately	O
back-projected	O
onto	O
the	O
wall	O
.	O
</s>
<s>
The	O
inbuilt	O
YrWall	B-Application
software	O
has	O
much	O
of	O
the	O
functionality	O
of	O
a	O
typical	O
computer	O
paint	B-Application
program	I-Application
,	O
with	O
a	O
pop-out	O
interface	O
which	O
enables	O
users	O
to	O
change	O
colour	O
,	O
spray	O
width	O
,	O
opacity	B-Algorithm
,	O
work	O
with	O
stencils	B-Algorithm
and	O
use	O
animated	O
items	O
such	O
as	O
swirls	O
,	O
stars	O
,	O
drips	O
and	O
splats	O
.	O
</s>
<s>
Recent	O
additions	O
to	O
YrWall	B-Application
include	O
options	O
to	O
email	O
a	O
JPEG	O
of	O
the	O
completed	O
design	O
and	O
create	O
personalised	O
stickers	O
and	O
T-shirts	O
.	O
</s>
<s>
The	O
inventor	O
of	O
YrWall	B-Application
,	O
Tom	O
Hogan	O
,	O
and	O
his	O
business	O
partner	O
,	O
Tim	O
Williams	O
,	O
appeared	O
on	O
Episode	O
4	O
of	O
Series	O
8	O
of	O
the	O
BBC	O
show	O
Dragons	O
 '	O
Den	O
.	O
</s>
<s>
Seeking	O
investment	O
in	O
YrWall	B-Application
,	O
the	O
entrepreneurs	O
were	O
successful	O
in	O
gaining	O
£	O
50,000	O
for	O
40%	O
of	O
the	O
YrWall	B-Application
parent	O
company	O
Lumacoustics	O
from	O
Dragons	O
Deborah	O
Meaden	O
and	O
Peter	O
Jones	O
.	O
</s>
<s>
In	O
September	O
2009	O
YrWall	B-Application
was	O
used	O
to	O
create	O
the	O
'	O
World	O
's	O
Largest	O
Interactive	O
Graffiti	O
Wall	O
 '	O
at	O
the	O
Bristol	O
Festival	O
,	O
UK	O
.	O
</s>
<s>
Artists	O
used	O
the	O
standard	O
3.5	O
m²	O
YrWall	B-Application
to	O
produce	O
artwork	O
which	O
was	O
in	O
turn	O
projected	O
live	O
onto	O
a	O
26m	O
x	O
10m	O
space	O
on	O
the	O
side	O
of	O
the	O
iconic	O
Lloyds	O
amphitheatre	O
building	O
.	O
</s>
