Information Technology Reference
In-Depth Information
Here,
CTPT
ca
(
char
i
(
LP
)
,char
i
(
LP
)
,w,t
) stands for the CTPT value of
camera
ca
under the condition of
char
i
(
LP
) which is the original character,
char
i
(
LP
)whichis
char
i
(
LP
) transformed into, weather
w
and time period
t
.
Based on this assumption, we propose a correction algorithm, namely
SLPs
Correction, and there are two main steps including get potential
CLPs
and
correct
SLPs
. Basic steps are illustrated in Algorithm 2.
Algorithm 2.
SLPs
Correction
Input:
SLPs
of each camera
ca ∈ CA
, the limit of
k
when searching
k
-degree neigh-
bors, the time
t
at which the
SPL
being captured, the continuous occurrence limit
ʸ
,andtheinterval
ʔt
between the camera in question and the
k
-degree neighbors
Output:
Output
CLPs
for each camera
ca ∈ CA
and its corresponding
SLPs
in
ca
1:
for
each
ca ∈ CA
do
2:
// get potential CLPs
3:
potentialCLPs
=
∅
;
for
i ₐ
1to
k
do
4:
5:
for
each
LP
recognized by
ca
do
6:
if
ʸ
≥ ʸ −
1in
ca
's 1,2,...,
k
-degree neighbors in interval
ʔt
then
7:
Add
LP
to
potentialCLPs
;
8:
end if
9:
end for
10:
end for
11:
//correct SLPs
12:
for
each
slp ∈ SLPs
do
13:
if
potentialCLPs
equals
∅
then
14:
Mark
slp
as
Exp
;
15:
else
Select most approximate
slp
by maximizing
sim
(
slp,slp
,w,t
)
,slp
∈
potentialCLPs
;
16:
as
CLP
;
17:
Mark
slp
18:
end if
19:
end for
20: Output
CLPs
and its corresponding
SLPs
;
21:
end for
CLPs
Accuracy Promotion.
To get a higher accuracy of
CLPs
, data fusion
of RFID and ALPR is applied in the process of
CLPs
Accuracy Promotion.
Since RFID records are more accurate than ALPR to be convincible, those
CLPs
whose original data both have ALPR
LP
records and RFID
LP
records could
transform into the results recognized by RFID directly. In a way, promotion of
CLPs
accuracy would be acquired to enhance the correction result. Algorithm
3,
CLPs
Accuracy Promotion, shows the detail of how data fusion improves the
CLPs
accuracy.
4 Experiment and Evaluation on In-Memory Database
In this section, experiments are designed to assess the veracity and time con-
suming of HelpMe. To evaluate the performance of HelpMe in veracity, ALPR
