WO2003032255A1 - Procede de correction de deformation d'image par une lentille dans un systeme de numerisation, et dispositif de correction correspondant - Google Patents

Procede de correction de deformation d'image par une lentille dans un systeme de numerisation, et dispositif de correction correspondant Download PDF

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Publication number
WO2003032255A1
WO2003032255A1 PCT/JP2002/010012 JP0210012W WO03032255A1 WO 2003032255 A1 WO2003032255 A1 WO 2003032255A1 JP 0210012 W JP0210012 W JP 0210012W WO 03032255 A1 WO03032255 A1 WO 03032255A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
image
pinhole
imaging
correcting
Prior art date
Application number
PCT/JP2002/010012
Other languages
English (en)
Japanese (ja)
Inventor
Hirokazu Yoshimura
Original Assignee
Japan Science And Technology Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Science And Technology Corporation filed Critical Japan Science And Technology Corporation
Publication of WO2003032255A1 publication Critical patent/WO2003032255A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/80—Geometric correction

Definitions

  • the present invention relates to a method and an apparatus for correcting image distortion caused by a lens in a digitizing system.
  • the image is formed on a CCD by a lens imaging system. Disclosure of the invention
  • the present invention provides a method and an apparatus for correcting image distortion caused by a lens in a digitizing system capable of correcting the image distortion even when an image is formed by a lens imaging system.
  • the purpose is to provide.
  • an imaging system using a lens in a digitizing system means for replacing the imaging system with an imaging system using a pinhole, and an imaging system using the lens
  • a data processing device for correcting data from the camera based on data from an imaging system using the pinhole.
  • FIG. 1 is a configuration diagram (part 1) of a device for correcting image distortion caused by a lens in a digitizing system using an imaging system using a pinhole, showing a first embodiment of the present invention.
  • FIG. 2 is a configuration diagram (part 2) of a device for correcting image distortion by a lens in a digitizing system using an imaging system with a pinhole, showing a first embodiment of the present invention.
  • FIG. 3 is a configuration diagram (part 1) of a device for correcting image distortion caused by a lens in a digitizing system using a pinhole imaging device according to a second embodiment of the present invention.
  • FIG. 4 is a configuration diagram (part 2) of a device for correcting image distortion caused by a lens in a digitizing system using a pinhole imaging device according to a first embodiment of the present invention.
  • FIG. 1 shows a first embodiment of the present invention, a configuration diagram of a device for correcting image distortion by an imaging system having a lens in a digitizing system having an imaging system having a pinhole (part 1)
  • Fig. 2 is a block diagram (part 2) of the image distortion correction device.
  • 1 is an integrating sphere that is a stable light source with uniform illuminance and does not fluctuate over time
  • 1A is the opening of the integrating sphere 1
  • 2 is the transmission type imaging object to be digitized.
  • 3 is an imaging device
  • 4 is a pinhole whose shape is a perfect circle that is mounted on the imaging device 3
  • 5 is a lens that is mounted in place of the pinhole 4
  • 6 is a device that fixes these devices. It is a frame to do.
  • Reference numeral 11 denotes a data processing device, an input interface (I / F) 12, ROM (storage of program) 13, RAM (storage of subsequent information) 14, image distortion correction It consists of a unit 15, an auxiliary information storage unit 16, and a CPU (central processing unit) 17.
  • I / F input interface
  • ROM storage of program
  • RAM storage of subsequent information
  • image distortion correction It consists of a unit 15, an auxiliary information storage unit 16, and a CPU (central processing unit) 17.
  • the imaging system with pinhole 4 is almost the only imaging system with no shift in geometric relative position.
  • the reason that pinhole 4 cannot be used directly as an imaging system for digitization is that the image is blurred by light diffraction.
  • the shape of the pinhole 4 is a perfect circle, the diffraction image of the point source will be annular, and the center thereof can be adopted as the position of the point source.
  • the pinhole 4 is used in place of the lens 5 for imaging, a row of point sources is arranged on the two-dimensional object, and the image is formed.
  • the image is formed.
  • FIG. 3 shows a second embodiment of the present invention.
  • ⁇ A configuration diagram of a device for correcting an image distortion of an image forming system by a lens in a digitizing system using an image forming device by a pinhole FIG. 3 shows the device for correcting the distortion of the image (Part 2).
  • Part 1 shows the device for correcting the distortion of the image (Part 2).
  • Part 2 shows the device for correcting the distortion of the image (Part 2).
  • Part 2 shows the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and their description is omitted.
  • 21 is a CCD camera having a lens
  • 22 is a pinhole imaging device (pinhole telescope) having a perfect circular pinhole (small hole) 22 A
  • 31 is a data processing device Input interface 32
  • ROM storage of program
  • RAM storage of primary information
  • image distortion correction unit 35 image distortion correction unit 35
  • auxiliary information storage unit 36 CPU (central processing unit) Consists of 3 7
  • the transmissive material 2 is imaged by the CCD camera 21 having a lens, taken into the data processing device 31, and stored in the RAM 34.
  • the imaging device 2 was moved to the position where the CCD camera 21 was set by a slide mechanism (not shown) using a pinhole, and the transmission type material 2 under the same conditions was used. Is captured by the pinhole imaging device 22, taken into the data processing device 31, and stored in the RAM 34.
  • FIGS. 3 and 4 when the object which is the transmission type material 2 is imaged by another imaging system, for example, an imaging device 22 (pinhole telescope) using a pinhole, The same object is imaged using the same CCD camera 21 as the pinhole telescope 22, taken into the data processor 31, and based on the image, the object to be digitized is imaged with a lens to correct the image.
  • a row of point sources is required.
  • the black point of the sun is used as the point source for correction.
  • This correction method can be applied not only to a digitizing system combining the integrating sphere 1 and the CCD camera 21 but also to other cases.
  • the same correction method can be used for faithfully acquiring and storing images as digital digital images for cultural assets.
  • the high-resolution image is captured by a lens and compared with the image captured by a pinhole camera to correct the position.
  • the device is suitable for digitizing an accurate image using a CCD camera, and can be widely used in the field of image technology.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne un procédé de correction de déformation d'image par une lentille dans un système de numérisation, qui permet de corriger une déformation d'image même lorsque l'image est formée via un système de mise au point de lentille. L'invention concerne également un dispositif de correction de déformation d'image par une lentille dans un système de numérisation, qui comprend un imageur à lentille (21) et un imageur sténopé (22) propres au système de numérisation, et un processeur de données (31) corrigeant les données issues de l'imageur à lentille (21) sur la base des données fournies par l'imageur sténopé (22).
PCT/JP2002/010012 2001-10-01 2002-09-27 Procede de correction de deformation d'image par une lentille dans un systeme de numerisation, et dispositif de correction correspondant WO2003032255A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001/305192 2001-10-01
JP2001305192A JP3761805B2 (ja) 2001-10-01 2001-10-01 デジタル化システム内のレンズによる像のひずみの補正装置

Publications (1)

Publication Number Publication Date
WO2003032255A1 true WO2003032255A1 (fr) 2003-04-17

Family

ID=19125017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/010012 WO2003032255A1 (fr) 2001-10-01 2002-09-27 Procede de correction de deformation d'image par une lentille dans un systeme de numerisation, et dispositif de correction correspondant

Country Status (2)

Country Link
JP (1) JP3761805B2 (fr)
WO (1) WO2003032255A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05274426A (ja) * 1992-03-26 1993-10-22 Sanyo Electric Co Ltd 画像処理装置及びこの画像処理装置における歪み補正方法
JPH0818848A (ja) * 1994-06-27 1996-01-19 Sanyo Electric Co Ltd カメラシステムおよび歪み除去方法
JP2000138853A (ja) * 1998-11-04 2000-05-16 Taiheiyo Boeki Kk ピンホールカメラ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05274426A (ja) * 1992-03-26 1993-10-22 Sanyo Electric Co Ltd 画像処理装置及びこの画像処理装置における歪み補正方法
JPH0818848A (ja) * 1994-06-27 1996-01-19 Sanyo Electric Co Ltd カメラシステムおよび歪み除去方法
JP2000138853A (ja) * 1998-11-04 2000-05-16 Taiheiyo Boeki Kk ピンホールカメラ

Also Published As

Publication number Publication date
JP3761805B2 (ja) 2006-03-29
JP2003108992A (ja) 2003-04-11

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