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????? ?????? Template matching

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Template matching 12 ... – PowerPoint PPT presentation

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Title: ????? ?????? Template matching


1
????? ??????Template matching
  • ????? 12

2
????? ?????? ????? ?????
  • ????? ????? ????? ??????? ???? ?????? ????? ?'
    ???? ????? ?' (????? ?' ????? ????).
  • ???? ?? ???? ?? ??? ?? ????? ???.

3
????? ?????? ????? ?????? ?? ?????
  • ????? ????? , ????? Template (???? ??????)
  • ?????? ?? ????? ??????
  • ???? ?????? ???? u,v ?? ???????
  • ???? ???? ????? ????? ??????

4
???? ?????? ?? ??????
?????? ?? ??????
????? ???? - Template
v
u
?????? ??????
????? ?? ???? ????, ???? ?? ?????? ????? u,v
?????? ??????? ???? ????? ??? ?????. ???? ??????
??????? ?????? ???? ?? ????? ??? ???? ??????,
???? ????? ?- scaling , affine ???' ... ??? ?????
?? ????? ????? ?? ???? ????.
5
????? ?????? ?? ??? ?????
  • ???? ?? ???? u,v ???????? u0..N-n , v0..M-m
  • ???? ?? u,v ???? ?? ???? ?????? ??? ??????
  • ???? ??????
  • ????
  • ???? ?? u1,v1 ??????? ?? ?????? ????? ?????.
    ?????? ???? ?? u,v ?????? ?????? ???? ???? ???
    ????? ?????? ????? (?????? ????? ???, ??? ??
    ????).

6
????? ?????? ??? ??????
  • ?????? ??? ??????
  • ???? ??? ?????? ???? ????? ?? ????? ??????.
  • ???? ??? ????? ??????? f
  • ?? ????? ????

7
????? ?????? ??? ?????? ????? ??????
?????? ?????? ??? ??????? ???? f(I1,I2)1 ?????
?????? ?????? ?? ???? ????? ??? ????????. ?? ????
?????? ????? ????? ????? ????. ?? ???? ??????
?????? ??? ???. ??? ??? ????? ???? ??? ?????.
8
????? ?????? ??? ?????? ??? ????? ???????
?????? ?????? ??? ??????? ???? f(I1,I2)ltTol ???
??????? ?????. ???????? ?? f ??? ???? ??? ???????
???? (??? f0). ??? ????? ?????? ?????? ?? ????
????? ??? ????????, ???? ????? Tol0 ??? ??????
????? ????? ??????. ?????? ?????? ?? ?? ??????
??????, ??? ????? ???? Salt Pepper ?????
???????? ???? ??????. ?????? ?? ???? ?? ????
?????? ????? (???????? ????? ?? ?????) ???????
?????.
9
????? ?????? ??? ?????? ??? ??? ????? ?? ??????
?????? ?????? ??? ??????? ???? f(I1,I2)ltTol ???
??????? ?????. ?????? ???? ?????? ?? ?? ??????
?????? ????? ?????? ????????. ????? ???????? ????
??????.
10
????? ?????? ??? ?????? ??? ??????? ???????
????? ???? ?? ??????? ???????? ???????? ??????
p,t ?- Matlab ???? ???? ??? ?? ??? pI1()
qI2() ??? ????? ?? ?????? ??????? ??? ???
???????? ????? ?????? ??????? ???? ??????
?????? ?? ???????? ???? ??????? ??????
??????. ???????? ???????? ????? ?? ???? ????? ??
??????? ?????? ??? ??? ????????
11
??????? ??????? - ????
?? ????? ??????? ???????? ?????? ???????, ??????
????????? ???????? ???? ???? ?????? ??? ??????
????? ?? ??? ???? ?????? ?????? ??? ???????
???? f(I1,I2)gtTol ??? ??????? ?????. ???????? ??
f ??? ???? ??? ??????? ???? ?? ??? ????? ?????
??? f1. ???? ????? ???????? ??????, ?? ????? ??
????? ????? ??? ?? ????? ???? ????? ????? ??? ???
?????? ??? ??????? ??????? ???? ?????. ????
?????? Epsilon ????? ????? ????? ????. ????
?????? ?????? ?????? ?? ?- Template ?????? ????
?????.
12
??????? ??????? ?? ????? ?????
?????? ????????? ?? ????????????? ????? ?? ????
?????
???? ??? ??????? ?? ???? ????? ???????? ??????
?????? ??? ??????? ???? f(I1,I2)gtTol ??? ???????
?????. ???????? ?? f ??? ???? ??? ??????? ???? ??
??? ????? ???? ?\?? ????? ????? ??? f1. ?? ????
????? ?? ????? ????? ?????? ???????????? ???????
?? ???? ?????. ???? ?????? Epsilon ?????. ????
?????? ?????? ?????? ?? ?- Template
13
?????
14
???????? ????? ???????
????? ?? ?????? ???????? ?- u1,v1
??? ??????? ?- x300 y45
15
???????? ??????? ???????
????? ?? ???????? ??????? ?- u1,v1
??? ??????? ?- x300 y45
16
??????? ??????? ?? ????? ?????
??????? ??????? ?? ????? ????? ?- u1,v1
??? ??????? ?- x300 y45
???????? ?? ????!
17
??????? ??????? ?? ????? ?????????? ???? ?????
?? 2
??????? ??????? ?? ????? ????? ?- u1,v1
??? ??????? ?- x300 y45
????? ????? "?????" ???? ?????? ?? 0.5 ?????
????? ?? ??????.
???? ???? ????? ????????? !
18
??????? ???????? ?? Template matching
  • ????? ?????? ????? (OCR). ?????? ????? ????? ??
    text (???? ????), ??? ?? ??? ?? ???? (??? ???
    ????? ??????? ????? ??????) ????? ????? Ascii
  • ????? ??? ????? ???? ??????. ?????? ???? ??????
    ???? ????? ??????? ?????? ??????? ?????.
  • ????? ????? ????? ?????? ????? ??? ????? ?????.

19
????? ?????? ??? Features ?????? ????? ???
???????? ??????? ??????? ?? ????? ?????
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(No Transcript)
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