JP2005129077A - 画像を復元する方法 - Google Patents
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- JP2005129077A JP2005129077A JP2004368135A JP2004368135A JP2005129077A JP 2005129077 A JP2005129077 A JP 2005129077A JP 2004368135 A JP2004368135 A JP 2004368135A JP 2004368135 A JP2004368135 A JP 2004368135A JP 2005129077 A JP2005129077 A JP 2005129077A
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- Engineering & Computer Science (AREA)
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Abstract
【解決手段】画像センサ、およびオリジナルに対するセンサ位置を検出する航行センサを備える走査装置が、オリジナルの画像を走査し、画像データおよび位置データを取り込む。復元される画像についてピクセル・グリッドが定義され、そこに線形画像データをマッピングする。1対の線形画像データをマッピングすることにより、1つの領域が定義される。領域内のそれぞれのピクセルについて、強度値を決定する。強度値は、強度を決定しようとするピクセルのまたぐ、複数センサ位置で取得される画像データに基づいて計算される。決定される強度値により、歪みのない画像が得られる。
【選択図】図14
Description
Ck = ΣiΣj(Sij - R(ij)+k)2
v =(sinθ, cosθ)
u =(cosθ, -sinθ)
v= (v1 + v2)/2
P1' = P1 + u1u + vv および P2' = P2 + u2u + vv
v' =(v'x, v'y) = (P2'-P1')/|P2'-P1'| = (P2'-P1')/D
u'= (v'y, -v'x)
xD=(yD-y1)*(x2-x1)/(y2-y1)
x(D+1)= xD + (x2-x1)/(y2-y1) = xD + xInc
xD'= (yD-y1')*(x2'-x1')/(y2'-y1')
x(D+1)'= xD' + (x2'- x1')/(y2'- y1') = xD' + xInc'
[Ceiling(Max(y1, y1')), Floor(Min (y2, y2'))]= [Y1, Y2]
TRANSFORM LOOP 1
{
//INITIALISATION
y=Y1
xInc=(x2-x1)/(y2-y1)
xlnc'=(x2'-x1')/(y2'-y1')
xD=x1+(y-y1)*xInc
xD'=x1'+(y-y1')*xInc'
//MAIN LOOP
while (y<=Y2)
{
[X1,X2] = [Ceiling(xD),Floor(xD')]
x=X1
//INNER LOOP
while (x<=X2)
VISIT PIXEL (x,y)
xD +=xInc
xD'+=xInc'
y++;
}
}
BiLinear(I1,I2,Y,y,x)= I1[Y]*(1-x)*(1-y)+I2[Y]*(1-y)*x
+ I1[Y+1]*(1-x)*y+I2[Y+1]*x*y
aD= (yD-y1)*(N-1)/(y2-y1)
および
aD'=(yD -yl')*(N -1)/(y2'-y1')
a(D+1)= aD + (N-1)/(y2-y1) = aD + aRowInc
および
a(D+1)'= aD' + (N-1)/(y2'-y1') = aD + aRowInc'
aE=aD+(xE-xD)*(aD'-aD)/(xD'-xD)
および
bE=(xE-xD)/(xD'-xD)
a(E+1)= aE + (aD'-aD)/(xD'-xD) = aE + aInc
および
b(E+1)= bE + 1/(xD'-xD) = bE + bInc
TRANSFORM LOOP 2
{
//INITIALISATION
y=Y1
xInc=(x2-x1)/(y2-y1)
xInc'=(x2'-x1')/(y2'-y1')
xD = x1+(y-y1)*xInc
xD' = x1'+(y-y1')*xInc'
aRowInc = (N-1)/(y2-y1)
aRowInc' = (N-1)/(y2'-y1')
aD = (y-y1)*aRowInc
aD' = (y-y1')*aRowInc'
//MAIN LOOP
while (y<=Y2)
{
[X1,X2] = [Ceiling(xD),(Floor(xD')]
x =X1
aInc = (aD'-aD)/(xD'-xD)
bInc = 1/(xD'-xD)
a = (x1-xD)*aInc
b = (x1-xD)*bInc
//INNER LOOP
while (x<=X2)
{
A = Floor(a)
pixel[y][x] = BiLinear(I1,I2,A,a-A,b)
a+=aInc
b+=bInc
}
xD+=xInc
xD'+=xInc'
aD+=aRowInc
aD'+=aRowIInc'
y++;
}
}
vD= I1[A]*(1-a) + I1[A+1]*a
および
vD'= I2[A']*(1-a')+I2[A'+1]*a'
ここで
A =Floor(aD) および A' = Floor(aD')
および
a = aD-A および a'= aD'-A'
VE = (vD*((xD'-xD)-(xE-xD)) + vD'*(xE-xD))/(xD'-xD)
v(E+1)= vE + (vD'-vD)/(xD'-xD) = vE + vInc
TRANSFORM LOOP 3
{
//INITIALISATION
y =Y1
xInc=(x2-x1)/(y2-y1)
xInc'=(x2'-x1')/(y2'-y1')
xD= x1+(y-y1)*xInc
xD'= x1'+(y-y1')*xInc'
aRowInc = (N-1)/(y2-y1)
aRowInc'= (N-1)/(y2'-y1')
aD =(y-y1)*aRowInc
aD'= (y-y1')*aRowInc'
//MAIN LOOP
while (y<=Y2)
{
[X1,X2] = [Ceiling(xD),Floor(xD')]
x = X1
A = Floor(A)
a = aD -A
vD= I1[A]*(1-a) + I1[A+1]*a
A'= Floor(A')
a' = aD'-A'
vD' = I1[A']*(1-a')+I1[A'+1]*a'
vInc= (vD'-vD)/(xD'-xD)
v = VD + (X1-xD)*vInc
//INNER LOOP
while (x<=X2)
{
pixel[y][x] = v
v+=vInc
}
XD+=xInc
xD'+=xInc'
aD+=aRowInc
aD'+=aRowInc'
y++
}
}
oE= (xE-xD)*((x2-x1)/SensorLength)*((N-1)/SensorLength)
oE= (xE-xD)*(x2-x1)*(N-1)/SensorLength2
ここで、
SensorLength2= (x2-x1)2+ (y2-y1)2
o(E+1)=(xE+1-xD)*(x2-x1)*(N-1)/SensorLength2
o(E+1)=oE + (x2-x1)*(N-1)/SensorLength2
o(E+1)=oE +oInc
oE'=(xE-xD')*((x2'-x1')/SensorLength')*((N- 1)/SensorLongth')
oE'=(xE-xD')*(x2'-x1')*(N- 1)/SensorLength'2
ここで、
SensorLength'2= (x2'-x1')2 + (y2'-y1')2
o(E+1)'=(xE+1-xD')*(x2'-x1')*(N-1)/SensorLength'2
o(E+1)'=oE'+(x2'-x1')*(N-1)/SensorLength'2
o(E+1)'=oE'+oInc'
aP=aD+oE
および
aP'=aD'+oE'
vP= I1[A]*(1-a) + I1[A+1]*a
ここで
A =Floor(aP) および a = aP-A
vP'= I1[A']*(1-a') + I1[A'+1]*a'
ここで
A'= Floor(aP') および a' = aP'-A'
v =((xD '-xE)*vP+(xE-xD)*vP')/(xD'-xD)
aE=aD+(xE-xD)*(aD'-aD)/(xD'-xD)
および
bE=(M-1)*(xE-xD)/(XD'-xD)
a(E+1)=aE+(aD'-aD)/(xD'-xD)=aE+aInc
および
b(E+1)= bE +(M-1)/(xD'-xD)=bE+bInc
それゆえ、TRANSFORM LOOPは、次のようになる。
TRANSFORM LOOP 4
{
//INITIALISATION
y=Y1
xInc=(x2-x1)/(y2-y1)
xInc'=(x2'-x1')/(y2'-y2')
xD= x1+(y-y1)*xInc
xD'= x1'+(y-y1')*xInc'
aRowInc=(N-1)/(y2-y1)
aRowInc'=(N-1)/(y2'-y1')
aD=(y-y1)*aRowInc
aD'=(y-y1')*aRowInc'
//MAIN LOOP
while (y<=Y2)
{
[X1,X2] = [Ceiling(xD), Floor(xD')]
x=X1
aInc=(aD'-aD)/(xD'-xD)
bInc=(M-1)/(xD'-xD)
a=(x1-xD)*aInc
b=(x1-xD)*bInc
//INNER LOOP
while (x<=X2)
{
A=Floor(a)
B=Floor(b)
pixel[y][x]=BiLinear(IB,IB+1,A,a-A,b-B)
a+=aInc
b+=bInc
}
xD+=xInc
xD'+=xInc'
aD+=aRowInc
aD'+=aRowInc'
y++;
}
}
|X1i*N-X1N| < N*deltaThreshold
|X2i*N-X2N| < N*deltaThreshold
|Y1i*N-Y1N| < N*deltaThreshold
|Y2i*N-Y2N| < N*deltaThreshold
Ck,l=ΣiΣj(Ti,j - Ii+k,j+l)2
SUMk,l= ΣiΣjIk+i,l+j
SUM2k,l= ΣiΣj(Ik+i,l+j)2
VARk,l= SUM2k,l/N-(SUMk,l)2/N2
(1)センサ内で画像データおよび航行手段内で位置データとして取り込まれる画像を復元する方法であって、
復元される画像についてピクセル・グリッドを定義するステップと、
位置データを使用して、センサ・データとピクセル・グリッドとの間の対応を特定するステップと、
複数のセンサ位置で得られ、強度が決定されようとする各々のピクセルに関連するように選択される画像データに基づいて、ピクセル・グリッド内のピクセルの強度を決定するステップと、
を含む、画像を復元する方法。
24,26 航行センサ
80 航行プロセッサ
Claims (1)
- センサで取り込まれる画像データおよび航行手段で取り込まれる位置データを含む画像を復元する方法であって、
復元される画像についてピクセル・グリッドを定義するステップと、
位置データを使用して、センサ・データと上記ピクセル・グリッドとの間の対応を特定するステップと、
強度が決定されようとする各々のピクセルに関連するように選択される、複数のセンサ位置で得られる画像データに基づいて、上記ピクセル・グリッド内のピクセルの強度を決定するステップと、
を含む、画像を復元する方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97302519A EP0873003B1 (en) | 1997-04-14 | 1997-04-14 | Image scanning device and method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10097414A Division JPH10304149A (ja) | 1997-04-14 | 1998-04-09 | 画像を復元する方法 |
Publications (2)
Publication Number | Publication Date |
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JP2005129077A true JP2005129077A (ja) | 2005-05-19 |
JP4327080B2 JP4327080B2 (ja) | 2009-09-09 |
Family
ID=8229291
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JP10097414A Pending JPH10304149A (ja) | 1997-04-14 | 1998-04-09 | 画像を復元する方法 |
JP2004368135A Expired - Fee Related JP4327080B2 (ja) | 1997-04-14 | 2004-12-20 | 画像を復元する方法 |
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JP10097414A Pending JPH10304149A (ja) | 1997-04-14 | 1998-04-09 | 画像を復元する方法 |
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EP (1) | EP0873003B1 (ja) |
JP (2) | JPH10304149A (ja) |
CN (1) | CN1164072C (ja) |
DE (1) | DE69737495T2 (ja) |
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- 1997-04-14 DE DE69737495T patent/DE69737495T2/de not_active Expired - Lifetime
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- 1998-04-09 JP JP10097414A patent/JPH10304149A/ja active Pending
- 1998-04-14 CN CNB981066976A patent/CN1164072C/zh not_active Expired - Fee Related
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2004
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Also Published As
Publication number | Publication date |
---|---|
US6249360B1 (en) | 2001-06-19 |
CN1196628A (zh) | 1998-10-21 |
JP4327080B2 (ja) | 2009-09-09 |
DE69737495T2 (de) | 2008-01-10 |
EP0873003B1 (en) | 2007-03-21 |
JPH10304149A (ja) | 1998-11-13 |
DE69737495D1 (de) | 2007-05-03 |
CN1164072C (zh) | 2004-08-25 |
EP0873003A1 (en) | 1998-10-21 |
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