<s>
The	O
Czenakowski	B-General_Concept
distance	I-General_Concept
(	O
sometimes	O
shortened	O
as	O
CZD	B-General_Concept
)	O
is	O
a	O
per-pixel	O
quality	O
metric	O
that	O
estimates	O
quality	O
or	O
similarity	O
by	O
measuring	O
differences	O
between	O
pixels	O
.	O
</s>
<s>
For	O
a	O
pixel	O
matrix	O
of	O
size	O
,	O
the	O
Czenakowski	O
coefficient	O
can	O
be	O
used	O
in	O
an	O
arithmetic	O
mean	O
spanning	O
all	O
pixels	O
to	O
calculate	O
the	O
Czenakowski	B-General_Concept
distance	I-General_Concept
as	O
follows	O
:	O
</s>
<s>
report	O
the	O
Czenakowski	B-General_Concept
distance	I-General_Concept
is	O
a	O
popular	O
choice	O
for	O
Color	B-Algorithm
Filter	I-Algorithm
Array	I-Algorithm
(	O
CFA	O
)	O
identification	O
.	O
</s>
