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Skewed Symmetry and Scene Regularities

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Title: Skewed Symmetry and Scene Regularities


1
?2?
  • ???????????

2
Marr ??????
???????
3D ??
??????????
2-1/2D ??
?????
???
??
??
??
??
3D ???? ?????
2D ??
3
??
1. ???? 2. ?????????? 3. ?????? 4. ???????????
4
?????
5
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  • ???

????
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????
????
????
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?????
z
????
???
6
???????
-z
x
x
f
d
d
  • z-2df/(x-x)
  • x-x ??
  • 2d ???

z
7
???????
  • Marr-Poggio
  • Marr-Poggio-Grimson
  • Nishihara-Poggio
  • Lucas-Kanade
  • Ohta-Kanade
  • Matthie-Kanade
  • Okutomi-Kanade
  • Baker
  • Hannah
  • Moravec
  • Barnard-Thompson

MIT group
CMU group
Stanford group
8
????
  • a. ???

10 11 12 10 11 12
10 11 12 10 11 12 11 15 16
b. ???
c. ??????
d. ???????
9
????
  • a. ???

10 10 10 10 5 10 10 10 10
10 10 10 10 5 10 10 10 10
10 10 10 10 10 10 10 10 10
b. ???
c. DP?
global optimam
local optimam local optimam
10
?1?????
11
????????? ??????
??? 9?????
12
??????????
  • ?????
  • ??(????)
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13
?2Marr-Poggio ????
??????????????????? (??????????????)
14
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15
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  • ??

????????????????
16
??(??1)
  • ???????
  • 2?????gt1????

17
??(??2)
  • ?????(Uniqueness Constraint)
  • ????1??1??????????

? ???????
18
??(??3)
  • ?????(Continuity constraint)
  • ?????????????????

19
??????????
  • ??????? 2D -gt 1D

????????????????? ?????????????????
20
?????????????
  • ???????1?????????????
  • ????(???????)????????????????

21
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  • ???????????
  • ????(???)????????????????

22
??????
23
????(???)
24
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???? ??
25
Marr ??????
???????
3D ??
??????????
2-1/2D ??
?????
???
??
??
??
??
3D ???? ?????
2D ??
26
?????
27
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?????? ?????????????
?????? ???????
28
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????
29
?????????
  • ???? ????????????
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  • ????????

30
????????
  • ????---????????
  • ??????????????????
  • ????????????
  • ??????? ???
  • f (i,e,g) Kb cos i

31
????????????
??????????????????? ???????/?? ????? 1 ??
1/cos i ?? cos i
32
(No Transcript)
33
?????????
  • ?????????????
  • ???????????????
  • ????????????????
  • ???????????
  • ? - ?
  • ? - ?
  • ? - ?
  • ????

34
????
  • ??????

(A,B,C)
??????
  • ???????2???????
  • ????????????

35
?????????
?????? Z axis
(p?q)????????(??) ???1???????
q
p
36
???????
  • (p,q) ???? N (p,q,1)
  • ???????? S

q
p
37
(No Transcript)
38
??????????????
  • Lambertian(?????)

q
p
Self-shadow line ?????????????????
39
???????
?????????,??????????? ? ???????????(????)??????
?????? E(x,y)R(p,q)
?????????????????????1?????? gt ????????!
?????
40
???????
  • 1?????????1????
  • --- gt ?????????!
  • ?????????????????????????
  • ??????????????????????
  • ??????????????

41
???????
3????????,????????????
42
???
  • ??????????????????
  • --- gt ????

43
(No Transcript)
44
?????
Ikeuchi Horn 83
45
???
46
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