Machine vision, principles and examples of application
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Transcript of Machine vision, principles and examples of application
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M =
m11 m12 m13 m14
m21 m22 m23 m24
m31 m32 m33 m34
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Pw Xw, Yw, Zw)
Pc Xc, Yc, Zc)
Pw Pc
Pc = R(Pw T)
R =
r11 r12 r13
r21 r22 r23r31 r32 r33
T
1 0 0 Tx
0 1 0 Ty
0 0 1 Tz
0 0 0 1
Xc
Yc
Zc
=
r11 r12 r13
r21 r22 r23
r31 r32 r33
Xw Tx
Yw Ty
Zw Tz
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Xc = RT1 (Pw T)
Yc
= RT2
(Pw T)
Zc = RT3 (Pw T)
RT1 , RT2 , R
T3
x = fXcZc
y = fYcZc
x = fRT1 (Pw T)
RT3 (Pw T)
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y = fRT2 (Pw T)
RT3 (Pw T)
x = (xim ox)sx
y = (yim oy)sy
xim = xsx
+ ox yim = ysy
+ oy
ox oy
ox =N2 oy =
M2
sx sy
xim
ym
1
=
xsx
0 ox
0 ysy
oy
0 0 1
x
y
1
(xim ox)sx = fRT1(PwT)
RT3(PwT)
(yim oy)sy = fRT2(PwT)
RT3(PwT)
xim = f sxRT1(PwT)
RT3(PwT)
+ ox yim = f syRT2(PwT)
RT3(PwT)
+ oy
M = Min Mex
Min =
xsx
0 ox
0 ysy
oy
0 0 1
Mex =
r11 r12 r13 RT1 T
r21 r22 r23 RT2 T
r31 r32 r33 RT3 T
xh
yh
w
= M
Xw
Yw
Zw
1
m11 m12 m13 m14
m21 m22 m23 m24
m31 m32 m33 m34
Xw
Yw
Zw
1
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xim =xhw
= m11Xw+m12Yw+m13Zw+m14m31Xw+m32Yw+m33Zw+m34
yim =yhw
= m21Xw+m22Yw+m23Zw+m24m31Xw+m32Yw+m33Zw+m34
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