<s>
A	O
human	B-Algorithm
visual	I-Algorithm
system	I-Algorithm
model	I-Algorithm
(	O
HVS	O
model	O
)	O
is	O
used	O
by	O
image	B-Algorithm
processing	I-Algorithm
,	O
video	O
processing	O
and	O
computer	B-Application
vision	I-Application
experts	O
to	O
deal	O
with	O
biological	O
and	O
psychological	O
processes	O
that	O
are	O
not	O
yet	O
fully	O
understood	O
.	O
</s>
<s>
Psychovisual	B-Algorithm
study	O
is	O
the	O
study	O
of	O
the	O
psychology	O
of	O
vision	O
.	O
</s>
<s>
The	O
human	B-Algorithm
visual	I-Algorithm
system	I-Algorithm
model	I-Algorithm
can	O
be	O
used	O
to	O
produce	O
desired	O
effects	O
in	O
perception	O
and	O
vision	O
.	O
</s>
<s>
Examples	O
of	O
using	O
an	O
HVS	O
model	O
include	O
color	O
television	O
,	O
lossy	B-Algorithm
compression	I-Algorithm
,	O
and	O
Cathode-ray	B-Device
tube	I-Device
(	O
CRT	O
)	O
television	O
.	O
</s>
<s>
Another	O
example	O
is	O
lossy	B-Algorithm
image	O
compression	O
,	O
like	O
JPEG	O
.	O
</s>
