<s>
Ray	B-Algorithm
tracing	I-Algorithm
is	O
a	O
technique	O
that	O
can	O
generate	O
near	O
photo-realistic	O
computer	O
images	O
.	O
</s>
<s>
A	O
wide	O
range	O
of	O
free	B-Application
software	I-Application
and	O
commercial	B-Application
software	I-Application
is	O
available	O
for	O
producing	O
these	O
images	O
.	O
</s>
<s>
This	O
article	O
lists	O
notable	O
ray-tracing	B-Algorithm
software	O
.	O
</s>
