【免费】Adaptivelensshadingcorrection.pdf_lensshading - CSDN文库

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US008228406B2

(12)

Unlted

States

Patent

(10)

Patent

N0.2

US

8,228,406

B2

Ku0

et

al.

(45)

Date

of

Patent:

Jul.

24,

2012

(54)

ADAPTIVE

LENS

SHADING

CORRECTION

6,542,198

B1

4/2003

Hung

et

a1.

6,597,395

B1

7/2003

Kim

et

a1.

.

- -

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6,618,508

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Webb

et

a1.

(75)

Inventors‘

gaYld

Démmsg

K310’

sagio?’scé

ms)’

6,627,254

B1

9/2003

Angelo

et

31.

“It?”

_“°;

an

0S6’

_(

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ay

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B1

11/2003

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et

a1.

Davld

ZIPIIICk,

Morgan

H111,

CA

(Us);

6,686,925

B1

2/2004

Cappels

Ting

Chen,

Sunnyvale,

CA

(US);

Sumit

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B1

2/2004

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a1.

Chawla

San

Carlos

CA

(Us)

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B1

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et

a1.

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B1

3/2004

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a1.

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6/2004

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CA

(US)

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Not1ce:

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the

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@131,

patent

is

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(Continued)

U.S.C.

154(b)

by 230

days.

FOREIGN

PATENT

DOCUMENTS

(21)

App1.N0.:

12/794,632

EP

1962517

A1

8/2008

(22)

Filed:

Jun.

4,

2010

(Continued)

(65)

Prior

Publication

Data

OTHER

PUBLICATIONS

US

2011/0298944

A1

Dec.

8,

2011

US.

Appl.

No.

12/794,642,

?led

Jun.

4,

2010,

Ting

Chen.

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*

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Chan

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*

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C

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*

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Yoder

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See

application

?le

for

complete

search

history.

(57)

ABSTRACT

(56)

References

Cited

U.S.

PATENT

DOCUMENTS

Systems,

methods,

and

devices

for

applying

lens

shading

correction

to

image

data

captured

by

an

image

sensor

are

provided.

In

one

embodiment,

multiple

lens

shading

adapta

5’008’739

A

4/1991

D’Luna

et

31'

tion functions,

each

modeled

based

on

the

response

ofa

color

5,512,961

A

4/1996

Cappels,

Sr.

. . . .

5

714 207

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21998 Kuo

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An

1mage

537143842

A

2/199g

Krause

et

a1,

frame

from

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image

data

may

be

analyzed

to

select

a

lens

5,853,820

A

12/1998

Kuo

et

a1.

shading

adaptation function

corresponding

to

areference

illu

5361496

A

1/1999

K110

et

a1~

minant

that

most

closely

matches

a current

illuminant.

The

g1

5:71;;

dale't

31

selected

lens

shading

function

may

then

be

used

to

adjust

a

set

6,327,641

B1

12/2001

Xiao

et

a1.

Oflens

Shadlng

Parameters

6,370,273

B1

4/2002

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6,400,471

B1

6/2002

Kuo

et

a1.

26

Claims,

24

Drawing

Sheets

272-

124

\

.

,

a

.

2 .

.

.

.

. a

.

2

.

. .

.

.

. .

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v .

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v

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.

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.

2

. .

.

E

HARDWARE

PIPELINE

134

r125 r128 r130 r132

,

["18

1

BLACK LENS

SHADING

WHlTE

DEMGSNCI

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DlSPLAY

;

LEVELCOMP.

CORRECHON

BALANCE

1.0010

|

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DEVlCE

i

11

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“

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MEMORY

I

US

8,228,406

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Page

2

6,957,511

6,979,831

7,009,391

7,028,743

7,215,813

7,242,411

7,351,484

7,353,284

7,379,105

7,382,711

7,387,848

7,412,654

7,447,351

7,471,823

7,477,779

7,519,229

7,596,280

7,609,304

7,617,481

7,668,099

7,688,356

7,693,341

7,711,200

2002/0008766

2003/0065495

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2004/0255339

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2006/0117009

2006/0196625

2006/0233252

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U.S.

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al.

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Agnoli

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al.

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et

al.

B2

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et

al.

B2

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Angelo

et

al.

B1

8/2008

Cappels,

Sr.

et

al.

B2

11/2008

Ubillos

B2

12/2008

Ubillos

et

al.

B2

1/2009

Graves

et

al.

B2

4/

2009

Wallace

et

al.

B2

9/

2009

Bilbrey

et

al.

B2

10/

2009

Kobayashi

et

al.

B2

11/2009

Joe

et

al.

B2

2/

2010

Agnoli

et

al.

B2

3/2010

Morishita

B2

4/

2010

Pettigrew

et

al.

B2

5/

2010

OuZilevski

et

al.

A1

1/

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Tariki

A1

4/2003

Lee

et

al.

A1

3/2004

Angelo

et

al.

A1

3/2004

Angelo

et

al.

A1

10/2004

Wang

et

al.

A1

12/2004

Agnoli

et

al.

A1

12/2004

Agnoli

et

al.

A1

4/2005

Lee

et

al.

A1

7/

2005

Kubo

A1

8/

2005

Chauhan

et

al.

A1

8/

2005

Chauhan

et

al.

A1

10/

2005

Fainstain

et

al.

A1

10/2005

Wallace

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al.

A1

6/2006

Joe

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A1

10/

2006

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al.

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2007

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A1

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ct

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7/2009

Wallace

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al.

7/2009

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et

al.

8/2009

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et

al.

10/2009

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et

al.

10/2009

Guo

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10/2009

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al.

11/2009

Gere

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2/2010

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A1*

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...................

..

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...........

..

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FOREIGN

PATENT

DOCUMENTS

JP

2006-229425

A

8/2006

JP

2008-118491

A

5/2008

OTHER

PUBLICATIONS

U.S.

Appl.

No.

12/794,638,

?led

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4,

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Andrew

YanoWitZ.

U.S.

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Cote.

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Cote

et

al.

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1,2010,

Guy

Cote

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Cote

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12/789,815,

May

28,2010,

Guy

Cote

et

al.

Touraj

Tajbakhsh;

“Color

lens

shade

compensation

achieved

by

lin

ear

regression

of

piece-Wise

bilinear

spline

functions,”

Proc.

SPIE:

Digital

Photography

VI,

vol.

7537,

Jan.

18,

2010,

pp.

1-20

(XP040516000).

*

cited

by

examiner

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