<s>
Focus	B-Algorithm
peaking	I-Algorithm
is	O
a	O
focusing	O
aid	O
in	O
live	B-Device
preview	I-Device
or	O
electronic	B-Algorithm
viewfinders	I-Algorithm
on	O
digital	O
cameras	O
that	O
places	O
a	O
white	O
or	O
coloured	O
highlight	O
on	O
in-focus	O
edges	O
(	O
contours	O
)	O
within	O
an	O
image	O
using	O
an	O
edge	B-Algorithm
detect	I-Algorithm
filter	O
.	O
</s>
