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Title: Author: Ko Nishino Last modified by: Created Date: 4/2/1999 8:30:18 AM Document presentation format – PowerPoint PPT presentation

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Title: ??


1
??????????
  • ?1?

2
????
????????
??????
????? ????????
?????
??????
???????
?????
?????????
3
??
  • ???
  • ??????????
  • ???????????????????
  • ????????????????
  • ???
  • ???????
  • ??????????
  • ????????????
  • ????????

4
???????
  • ??????
  • ??? ??????? E405
  • ????? 4-6-1
  • ki_at_iis.u-tokyo.ac.jp
  • ??
  • ?? 50
  • ???? 50

5
??
  • 2??????
  • 3??????
  • ????
  • ?????
  • ?????
  • 3?????
  • ?????
  • ???

6
??????
  • 6?1? ??2D????????
  • 6?8? ???????????
  • 6?15? ????????????????
  • 6?22? ??????IBR
  • 6?29? ????
  • 7?6? ????????????
  • 7?13? 4?????????

7
??????????
  • ???????????????????????
  • 2????(????)??3????????
  • ?????????????????????

8
2?????3????
  • ??????,?????????????????????????

?????
?????
9
???????????????(Marr)
??????
3??????
??3????
???????
????
???
?????
??
??
?????
3D???? (shape-from-x)
10
????????(2D)
11
????????
  • ?????? (????,?,???)
  • ??????
  • ???????
  • ????
  • PC???, IT
  • ??????

??????
12
???
  • ????????????????

??????? (?????????)
????????? (???????)
13
???(??)
  • 2-D ?????????

?????????????????????
14
???? (Pixel)
  • 2-D?????????
  • ????

columns
0
1
N-1
n
0
1
rows
m
Digital image M x N pixels
M-1
15
??????(???)
80 x 60 pixels
40 x 30 pixels
320 x 240 pixels
160 x 120 pixels
16
???
  • ???????????????????????

????????? (???????)
??????? (?????????????)
??????? 3 bit 8 level 8 bit 256 level
17
???(??)
  • 2-D?????????

?????????????????
18
?????
  • ???????

256 colors
16.7 million colors
4 colors
16 colors
19
??????
20
????
  • ??????????????????????
  • ?????
  • ????
  • ????

FILTER
?
21
?????????????
  • ????????
  • ??????????
  • ?????????
  • ?????????

22
?????
  • ????
  • ??????
  • ?????????

23
???????
  • ???????????????

0
5
4
6
4
3
8
5
5
7
5
10
8
8
9
7
3
8
0
9
7
8
1
7
9
10
5
3 x 3 (5 x 5) (7 x 7)
24
???????(??)
  • ????????

8
6
25
???????(??)
  • ?1 ?????????

????? (5 Gaussian)
???
???????
26
???????(??)
  • ?2 ??????????

????? (Random binary)
???
???????
27
???????
  • ???????
  • ????????????????
  • ???????
  • ????????????????
  • ?????(???)????

28
?????????
  • ????????????????

8
8
29
?????????(??)
  • ? 3 x 3 ????

???????
??????
30
???
31
???
  • ???????(??)??????????
  • ???????????? (????????)
  • ????????????????
  • ???????????????

32
??????
  • ???????
  • ??????
  • ??????

Intensity
x
Intensity
x
Intensity
x
33
1-D ??????
  • 1????2???

???
1???
2???
Fig. from Digital Image Processing (Springer)
34
Gradient-base
  • 1?????????
  • ?????????

2 x 2 ???
3 x 3 ???
??????????????
35
Gradient-base (??)
  • ????????
  • Roberts
  • Prewitt
  • Sobel

36
Gradient-base (??)
  • ? Prewitt?????

37
Laplacian operator
  • 2?????????

4 direction
8 direction
???????????
38
Laplacian operator (??)
  • ? Laplacian?????

39
Laplacian Of Gaussian
  • ??????????????
  • Gauss???????(?????)????Laplacian?????
  • Laplacian of Gaussian

40
Laplacian Of Gaussian (??)
  • ? LOG?????

41
??????
  • ????????

X
m
????f
y
Z
?????C
????c
Y
x
M
??????
?????
???????M???????m????????????
42
????
  • ???????????
  • ????????(pinhole)????

X
m
????f
y
Z
?????C
????c
Y
x
(X,Y,Z)???????? (x,y)??????????? s????
M
??????
?????
43
????(??)
  • ?????????????

X
x
f
Z
c
C
m
y
Y
M
??????
?????
???????????????,????????
44
???(????)
  • ?????(???)
  • ??????????????

X
x
Z
c
C
y
Y
m
(X,Y,Z)???????? (x,y)???????????
M
??????
?????
45
????
46
??????
???
????
????
47
?????????
  • 2??????????
  • ??3????????
  • ??????????????????
  • ?????????????????????????

48
??????
???
???-
?????????????????,?????
49
????????
3D?????????????????
????????
50
???????(????)
  • 9 ???????
  • ?4 ???????

?4x4x4x4x4x4x4x4x4250,000????
???! ???1?????? 250,000??????????????! ?3D??????
??????
51
???????????
  • ???????
  • 208?????12????
  • L? - 6?
  • ARROW? - 3?
  • FORK? - 3?

52
?????????
  • ???? --250,000????
  • ????
  • 3ARROW - 3x3x3
  • 3L - 6x6x6
  • 1FORK - 3

?3x3x3x6x6x6x317,496????
53
????
  • ?????????
  • -gt ??????

54
????????
  • ????????
  • ?????????? -gt ???
  • ???????????

55
??1 ????????
56
?????????????
??????????,???????????????
57
??3 ????
????????????????????
58
???
  • 2??????
  • ?????
  • ???????
  • ?????
  • ??????????
  • 3???????
  • ?????
  • ????
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