US 9,454,706 B1Granted

Arabic like online alphanumeric character recognition system and method using automatic fuzzy modeling

AssigneeKing Fahd University of Petroleum and Minerals

InventorsDhiaa A. A. Musleh, Khaldoun M. K. Halawani, Sabri Abdullah Mahmoud Mohammed

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Abstract

A system and associated methodology recognizes an Arabic like alphanumeric character using fuzzy modeling. The method receives a handwritten Arabic like alphanumeric character, stores fuzzy models of a plurality of Arabic like alphanumeric characters, preprocesses the handwritten Arabic like alphanumeric character, extracts features from the preprocessed Arabic like alphanumeric character, computes a similarity value based on fuzzy comparison between points of the preprocessed Arabic like alphanumeric character and the stored fuzzy models, classifies the handwritten Arabic like alphanumeric character based at least in part on the similarity value and outputs a classified alphanumeric character.

Claims17

Dependent claims

A method for Arabic like alphanumeric character recognition, comprising:

receiving a handwritten Arabic like alphanumeric character, from an alphanumeric input device;
storing, in a memory, fuzzy models of a plurality of Arabic like alphanumeric characters;
preprocessing, by processing circuitry, the handwritten Arabic like alphanumeric character;
extracting, by the processing circuitry, features from the preprocessed Arabic like alphanumeric character;
computing, by the processing circuitry, a similarity value based on fuzzy comparisons between points of the preprocessed Arabic like alphanumeric character and the stored fuzzy models;
classifying, by the processing circuitry, the handwritten Arabic like alphanumeric character based at least in part on the similarity value;
and
outputting a classified alphanumeric character,
wherein the similarity value between a preprocessed Arabic like alphanumeric character S and a fuzzy model M is calculated based on a membership value calculated by applying
sim
⁡
(
S
,
M
)
=
1
N
⁢
∑
i
=
1
N
⁢
M
v
⁡
(
S
⁡
(
i
)
,
M
⁡
(
i
)
)
wherein the membership value is expressed as:
M
v
⁡
(
S
⁡
(
i
)
,
M
⁡
(
i
)
)
=
{
0
,
d
>
α
1
⁢
⁢
or
⁢
⁢
d
<
α
2
1
,
β
1
≤
d
≤
β
2
α
1
-
d
α
1
-
β
,
β
1
<
d
≤
α
1
d
-
α
2
β
2
-
α
2
,
α
2
≤
d
<
β
2
where N is a number of points, d is a directional feature of the preprocessed Arabic like alphanumeric character S at point i, β1 and β2 are a first tolerance and α1 and α2 are a second tolerance.

116 more elements

A system for Arabic like alphanumeric character recognition, the system comprising:

a alphanumeric input device;
and
processing circuitry configured to
receive a handwritten Arabic like alphanumeric character, from the alphanumeric input device;
store, in a memory, fuzzy models of a plurality of Arabic like alphanumeric characters;
preprocess the handwritten Arabic like alphanumeric character;
extract features from the preprocessed Arabic like alphanumeric character;
compute a similarity value based on fuzzy comparisons between points of the preprocessed Arabic like alphanumeric character and the stored fuzzy models;
classify the handwritten Arabic like alphanumeric character based at least in part on the similarity value;
and
output a classified alphanumeric character,
wherein the similarity value between the preprocessed Arabic like alphanumeric character S and a fuzzy model M is calculated based on a membership value calculated by applying
sim
⁡
(
S
,
M
)
=
1
N
⁢
∑
i
=
1
N
⁢
M
v
⁡
(
S
⁡
(
i
)
,
M
⁡
(
i
)
)
wherein the membership value is expressed as:
M
v
⁡
(
S
⁡
(
i
)
,
M
⁡
(
i
)
)
=
{
0
,
d
>
α
1
⁢
⁢
or
⁢
⁢
d
<
α
2
1
,
β
1
≤
d
≤
β
2
α
1
-
d
α
1
-
β
,
β
1
<
d
≤
α
1
d
-
α
2
β
2
-
α
2
,
α
2
≤
d
<
β
2
where N is a number of points, d is a directional feature of the preprocessed Arabic like alphanumeric character S at point i, β1 and β2 are a first tolerance and α1 and α2, are a second tolerance.

119 more elements

Dependencies are inferred from the claim text.