do local e global caracteristicas para identificacao de escrita

Upload: casesilva

Post on 05-Apr-2018

215 views

Category:

Documents


0 download

TRANSCRIPT

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    1/6

    !"#$%&'()*%+%*

    !

    ! !

    !

    !!

    "

    !

    ! #

    "!

    $%% !

    &'(

    ,-*.*$$/

    01$*%

    ) 2 * ) 2

    ) + *2 1 2 1 *

    * () ) ++% 3)

    )" $* 2 ( 1+, /$$

    $$++)%3)/$$())

    *)$$$4*$*)2/*(2

    ($1($)1*1)2+

    * ) 5 2% 3) $$ () ) ) )

    *1 ) 2 $$6 * * 2/

    2))))212+*$$12)78% 9(/ )2$$42/$$++)

    $7:8+*1(2))

    )2/**5%7;8

    ($)*+/)2

    51/$$A ( >$$A *%

    (/ ) 5 $$ 7::8 $$/+) $$

    *7@8 42 (+)*$

    78)+1)(%C2

    2+*(***2++

    2+ "$ ( * /$$ $$

    *% 9 /$$ $1 * +*(

    $* * )2/% 3) $$* )

    +$1 *1 ) ) * "

    (+$% 3) () ) $ )

    *$$2%

    !"

    )2+()++$

    2 *% 3$$1 1(

    2 / * )**$ /* )

    1( $$) )6 ) )

    **)2*(%?()

    $)*")+*)2/2))$

    )*)()++10*7:8%

    ) ++) $4 ) 21 ) $ 2

    /(*)(2)5%-)4

    ) / * ) 2 + * 2)

    2($4)+)1$21)$

    $+ + ) ) $ (1

    * ) * $% 0* ) ) $

    * ) 5 2 )4 ( /$$

    $))2/%3)

    2$$ $ 2+ ++) .

    *$2)$))))*$$

    )+%

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    2/6

    #

    3) / * ) 1(

    * 1 5/ ) ) * *

    )% ) * +) 2 (+$1 /$$ ++)

    / ) ( (/ $

    / ) 2/1$% 3) D $1

    )2/1$2))($)*)

    2/ 1% ) +) 2 $+ $$++))/)*"$2/%

    3)5)+)$2

    $1 )2% 3) / ($*

    1($$*/:)*)+)

    $)*$$2%

    Figure 1 Training Model

    E$$2/ FG /( )( ++ 2

    2)$$1*)*)%-)))++$**/*$

    $$6)+*/()2/

    $$2/ ) $* / ) $

    % 3) . * * .

    *($1$2,

    "") ""

    =A>=

    =

    =

    =

    =

    :

    +

    =

    -)

    """=

    +=

    2)*)* *"1

    " >A)*)/

    /">+$1A5%

    .*$$$2$)*(/

    ++$ *% * )2

    ( 2 ++$1 * * / *$

    +/ HH ;H :@H% 3)

    +())5$

    $$6/ ) )/) *"% 3) 2 +(

    *$)$*)/(%

    Figure 2 Application of a set of four gabor filters withrespective masks

    3) * ) / )

    * :I@ * ) * ) (4 + ) 1( * ) . * 2)$ )

    )$*"1$41)*($,

    @

    :

    =

    2)=

    =J = )/,=B:%

    3) ++$ * * / *$ )2

    */=%?))$/

    1 + $$6% C )

    )4 2 ++$$ (5($ .+

    4+/$1)(5($+(+$78%

    Figure 3 Directional contour map in the vertical (0),oblique (45and 135) and horizontal (90) directions

    E$$12+(+)*1(+%

    2))(+5$($$11

    ()*$2)2)))

    +5$ 2 ( % 3) $

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    3/6

    $(+$$*/@%

    3)1$$2)*

    /( *// ) $ ++ 2 )

    $(+*D+*

    )$*>*/A%/)

    * ) +5$ 2) ($6

    2/) ++$ $ ) + .

    (+% C ) +5$ ( +$

    ) ( 2/) (+ ) $

    % - 4+ ) *

    ($*+/)2/1$*

    )+))(+$**$1

    +*)2/1$%0)

    4( $/ ) /

    (+/2 2/1 K$ )*

    ($ + +% 9 (+ )

    )4($/)()(*$%

    -)5)11$$/)

    $* )/* **$

    *4%(1(+/)()$

    * ) * ) (/ ) /

    )*)$#$*/)(*

    (/ 2/$1 $*%3) $ * 4 2))

    ) $* ) / (((

    ))>4L=*1(A$$2/ )

    * 2 D / )

    2/1$%

    Figure 4 Direction rose for the vector [16.2, 27.0, 24.3,32.4]

    $%

    ? ($ 2/ ) /+ /) 2

    + )1* $$ $ )2/%-

    ) )2 ) 2) )2 5 ) 5

    + 2)) $ 5+$ 1 2

    *1(%

    3 5 )*( ) )25

    $/(*($$22*6"%3)6

    )$$//)(+$*(

    )1$*))($$/)/

    * +*( 7:=8% 3) (+$ ()

    $)*)(//$$1*($*

    /) + ( $(/ ) 22

    2))1+*5%3)$1/

    $/ ( * (/ >/ 5 +5$A

    ) 22 $ 2$$ + ) 5

    /(4**(/% $1

    2 ++ ( + ++) 7:@8 2)

    (+1(+ * 5 %

    E ) (+ ) 5 ) $

    /*522+$*($*/)

    *)*5>$4A+5$%

    Figure 5 Window Positioning (a) Start of ink trace, (b)Choice of next side with exiting trace, (c) Initialposition of the next window, (d) Sliding the windowwith respect to trace

    $( / 2) ) () * /(/

    ) (/ $4 ) $4 * *)$

    + 2) ) $$ 22% ) +

    ((2+2)"(

    + ) 4 % / 2)

    (+2*4$+$)*22

    5(1 * ) 4$% E ) 22 2

    ***$/($1,K-M)))

    + *$/ / * ) 4$ 5 *( )

    +$%*) 4$5 *() K>-A2

    +$) 5222) /)>+$1$*A

    * ) 22 > ) /$ (+A

    +$)$>+2A*

    +%?)))*)4$5*(

    )M>A2+$)522+>+$1

    (A * ) 22 ( )6$$1

    >$* /)A ) 2$$ +$ ) 5% 3)

    ())$$*/%2))

    4$5*(()2)*

    ))+$1%3)22+/$/)(

    ++$ ) * ) (+ ) (/ )

    $/ * )2/ ($$

    (/ )2 * ) 2 N)$G */ % 9

    (+ * ) /$ >B 22A )

    -

    OL9D

    P

    P

    P 4$5/

    *(

    QLE5

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    4/6

    ()+7:@8>22A)++

    () >; 22A ) $$% 3) 2

    ()$1)(**$22

    $(+) 22+/ 2) + )

    5+5$%

    Figure 6 Division of the word headlines (a) RegularDivision, (b) Sliding windows horizontally, (c)Following the ink trace

    //)226215)

    1 2) 6 * ::5:: :@5:@ :5: :5:

    *$$1*5:@5:@*1(%3)***22

    6 * +*( ) $16

    $7:@8%

    ? ) 5 ) (/ 2

    + ) $/% 3) D ) )

    (/ 2)) (+)$/$$1($ /+

    ( $% - ) (+$1 "$ $/

    $/)()42+)(

    *$%32(/(+1)*$$2/$($1(7:8%

    =I:

    ::::::::

    ::::

    A8A>A>A>7>A>

    +,

    ++++

    =

    -) -

    / ) ( * +5$ * 2)) ) 2

    (/QO)$-+$1)

    +/ +5$+%3) $

    (+$(/)$$*/%

    ? ) (/ ) $ 2 )

    $ 4+ $1 ) )/ ** ( *

    $(% 3) ( ** )2 $ 2+4)+((+.$2))$$2

    BR*5+5$)(/%

    E)$2$$+$1*

    /012$(5,

    ,,1 AA>> =

    -) , / ) (5 2) $( )

    $( >) (/ + '"$ $(

    A*$3/))((*$

    %3)2*)$+

    )(1)*)%

    &A>! 11/4 =

    A&>! 145

    =

    Figure 7 Clusters obtained on a document image

    )* +) / )2/ (+$*422)D*12

    (/ ) 2 ) * % 3) * +

    2*)/*)2/1$

    *)"( %3)**/*$

    ++$)(/

    )2/$*/()$,

    AA>>AA>>(/A> :

    1 =

    2)02+)*)

    * ( ) ( S )

    (5 * $ % C 2 5 * )

    *6)/)(2/1$)*%

    - ) + ) 5 * $$ * *(

    ) (% - 2) ) * 5

    (/*$$21)$/)+/

    )2/1*$)+

    %E)$2$(/)

    2)) )+*/+%)$

    >A

    >A

    >A

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    5/6

    2$$)($1(*)$(2)$$

    ))$(*)($%3)$(2))

    $ $$) ) ) $ +%

    3) 2 ) + * 2/ 1 *

    +2))+*2,

    &! - " =

    Figure 8 Identification model

    3)**2(+$1/)

    01$*#)($12(

    + * ( 5

    +15/*($,

    =

    =

    A>

    :

    AA>>A>

    :A>

    -

    -51

    "1/."

    5.

    3) , *) -"

    ) D *)

    $ * ( ) (5(6 ) +$1 *

    + -" $//$1% A> - "1/ (

    1)5+,

    A>$/A>A>=

    :$/

    =

    : :

    1/,1,1 +

    622)5#

    (5A>5$*(5

    A>5:$*(

    5+)/+T D

    =

    =

    =

    =

    1

    ,

    9(+$*)5+$

    * 7:@8% - $$ ) ($1 2

    ( 3 $$ ) ( )

    *1)2*)"(,

    AAA>>(5>A> 5

    5.7

    =

    -), 6

    & $%'3$1(2)($1)

    *:2*()9F782)(/

    * ) / /% K) (/

    )/B:$*5%

    Figure 9 Classification rates

    E)*+)2))$*

    * ;BR >4L =A% - (4 ) ) /*

    )$**2)*

    () 2$>4U=A# */ ;% 3)

    *)*$2*54=%)

    +) 2 ) ) 2 * ) " (

    2) ) +* 2/ $ ) $$

    **;=R%3)BR)($

    *)2+*$**%

    9 (+ 1 * ) $ 2)

    2) +$* * 2/ $ ) /

    +) : $1 (+ ) * $

    )(*(+(+)=

    2)) $ 1 *$ $/ 2)$/

    %9$)/) 2$ ) $4 )/) $*

    2) 4L= ) $ )2 (+(

    /4L:>$/A%-$(+)()

    * * 5 > (/A ++ )

    + ++ ) 2 + 7:@8%

    ) ) 2 () ) /*$1

    (+*$((6*/:%

    **$2+$$/)

    5+( ) +*( (+

    $2)))())$%

  • 8/2/2019 do Local e Global Caracteristicas Para Identificacao de Escrita

    6/6

    82%

    84%

    86%

    88%

    90%

    92%

    94%

    96%

    98%

    Top1 Top2 Top3 Top4

    Identification

    Rate

    Without Phase1,Text Division by Proposed method

    With Phase1 (k=2),Text Division by Proposed Method

    With Phase1 (k=2),Text Division by Earlier Method[13]

    Figure 10 Comparison of Identification Rates

    (

    - ) + ** () * 2

    * )2 (% 3) ()

    *1/)2/1$*))

    5/)*()22$*"$1

    ) 2 ) )% 3) $6 *

    1+(/$)/(+*2

    )++%C2)+5)$$/

    /) > $ $A ) 2$$ + )

    2/ 1$ $$2 ) 5+$ * ) *

    + 2/% )// )

    22 6 / ) +) * )2/ )() $ ++$ $// $4

    9 9 +% 3) 1($ ((

    1 ($$1 D/ ) 22 6

    +/+)2/$%F )1(

    5 1 * +*( )

    **))2$$%

    '

    7:8 9% 0* 3% " % C V9 2**1(W/$=:@=B=;==%

    7=8 T% 0$ M% T % C% K(+6XC2/ /, 2 +$1*YX %* E) $* / 9$( 9$%=:;;B++%:B:%

    7@8 F% 0$ % )(4 % T+D$ V-* / / $ *W % * ) $ * (

    9$1/$(K/)$@9/=@++%;@;:%

    78 F% 0$ % )(4 V(/ F$+$

    E * 35+ - * T*W%?*):) $-4)+EC2//0$E=%

    78 %.T%K/$%0%C2/($** ))6*2G 1$ (/ (+% $ * (/9$1/>9A$(=+/B;=%

    78 9(0TK/$C%K(+6%F%$Z$V- * /C( ETFW % * ) ;)[$* (9$1/>9=A06$+(=%

    78 %FC%04V9*$$K/$)* **$ )2/ /W % * )

    $ * ( 9$1 /0/$:;;;++%B%

    7B8 9%M1% C 3%" O%X*/2[+)/4X%*) $ * ( 9$1 /0/$:;;;++%B%

    7;8 %M%TV.$$F)?*-*W%*):)$ -4)+ E C2//0$E=%

    7:8C%K%%3%M3\%%04V$*0C2/W/$%@@=++%:;:%

    7::8% )(4 % 9 F% 0$ V9( -* / (+ K/0 E * ++ - +W KKK 3 * 9$1 F)$$/$=%++%B;B=%

    7:=89% + M% T X-9) E$ (+X 2*) +% @ K/)) $-4)+ E C2/ />-EC[=A==%

    7:@8% " M% T V- * C2 (W % * ) ;)[$* ( 9$1 />9=A06$+(=%

    7:8% )% )C% 9 %V$1 *)2/W Z% * E >A,:%: Z$1==%