<s>
Phase	B-Algorithm
stretch	I-Algorithm
transform	I-Algorithm
(	O
PST	O
)	O
is	O
a	O
computational	O
approach	O
to	O
signal	O
and	O
image	O
processing	O
.	O
</s>
<s>
Features	O
can	O
be	O
further	O
enhanced	O
by	O
applying	O
thresholding	B-Algorithm
and	O
morphological	B-Algorithm
operations	I-Algorithm
.	O
</s>
<s>
PST	O
is	O
a	O
pure	O
phase	O
operation	O
whereas	O
conventional	O
edge	B-Algorithm
detection	I-Algorithm
algorithms	O
operate	O
on	O
amplitude	O
.	O
</s>
<s>
PST	O
has	O
been	O
used	O
for	O
edge	B-Algorithm
detection	I-Algorithm
in	O
biological	O
and	O
biomedical	O
images	O
as	O
well	O
as	O
synthetic-aperture	B-Application
radar	I-Application
(	O
SAR	O
)	O
image	O
processing	O
.	O
</s>
<s>
The	O
researchers	O
say	O
the	O
code	O
could	O
eventually	O
be	O
used	O
in	O
face	O
,	O
fingerprint	B-Algorithm
,	O
and	O
iris	O
recognition	O
systems	O
for	O
high-tech	O
security	O
,	O
as	O
well	O
as	O
in	O
self-driving	O
cars	O
 '	O
navigation	O
systems	O
or	O
for	O
inspecting	O
industrial	O
products	O
.	O
</s>
<s>
In	O
May	O
2022	O
,	O
it	O
became	O
one	O
algorithm	O
in	O
PhyCV	B-Application
:	O
the	O
first	O
physics-inspired	O
computer	O
vision	O
library	O
.	O
</s>
