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2002 Fiscal Year Final Research Report Summary

Study of 3D Fundus Pattern Reconstruction and Display from Fundus Images

Research Project

Project/Area Number 12450161
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionTohoku University

Principal Investigator

DEGUCHI Koichiro  Tohoku Univ., Grad.School of Inform.Sci., Professor, 大学院・情報科学研究科, 教授 (30107544)

Co-Investigator(Kenkyū-buntansha) NAKAJIMA Taira  Tohoku Univ., Faculty of Eng., Assistant Professor, 大学院・工学研究科, 講師 (30312614)
HONTANI Hidekata  Yamagata Univ., Faculty of Eng., Associate Professor, 工学部, 助教授 (60282688)
OKATANI Takayuki  Tohoku Univ.,Grad.School of Inform.Sci., Associate Professor, 大学院・情報科学研究科, 助教授 (00312637)
Project Period (FY) 2000 – 2002
KeywordsImage Processing / 3D shape Reconstruction / Computer Vision / Fundus Image / Medical Image / Stereo system / Fundus Camera / Image Diagnostics
Research Abstract

In this research, we develop a method to reconstruct and display 3D Findus Pattern from a set of multiple Findus Images taken in many directions. The fundus is the inner bottom of an eyeball. It is the only place in our bodies where blood vessels are able to be observed directly, and it is very useful part for a variety of diagnosis on helth conditions. However, it is difficult to locate the 3D positions of the fundus parts position and measure their dimensions, because the fundus observation is made through eye lens. Due to this, the diagnosis is tend to be emphasized on the subjectivity of the viewers.
Some methods have been proposed where, after camera calibrations, 3D fundus display was obtained from a pair of stereo images. But it provided only a narrow area of 3D fundus because of the limited view angle of the fundus camera.
In this research, we proposed the method of 3D Reconstruction of large area and showed the experimental results for some real fundus images.
Findus images are skewed due to optical systems such camera lens and eye lens. The camera optical system can be fully calibrated, while the human eye system is difficult to be calibrated. In the proposed system, the optical system of the eye is modeled with a single lens, and the shape of the fundus is assumed to be sphere. It is proven that the real images of fundus through a single lens form quadratic surfaces. The deformation of fundus images reflects the parameters of the quadratic surfaces. So, from the multiple fundus images, the parameters were identified, and through which the skews were estimated. Then the 3D display in large area was achieved.
To put our result to practical use, it still needs some doctors' help. But many experimental results promise the usefulness of the developed method. This is also a development of new area in the field of computer vision.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] K.Deguchi: "Detection and enhancement of line structures in an image by anisotropic diffusion"Pattern Recognition Letters. 23. 1399-1405 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岡谷, 久保田, 出口: "カメラモデルの段階的切り替えによる多視点カメラシステムのセルフキャリブレーション"情報処理学会論文誌--コンピュータビジョンとイメージメディア. 43,(CVIM5). 33-42 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Deguchi, Kawamata, Kanae, Hontani, Wakabayashi: "3D Fundus Shape Reconstruction and Display from Stereo Fundus Images"IEICE Trans. on Information and Systems. E83-D-7. 1408-1414 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岡谷貴之, 出口光一郎: "非ランバート性拡散反射に対する等高線の発展による陰影からの形状復元"情報処理学会論文誌. 14-1. 92-100 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出口光一郎, 日浦慎作: "視覚センサによる3次元形状計測--分散協調視覚のための能動視覚センサの開発"日本ロボット学会誌. 19-4. 420-428 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岡谷貴之, 出口光一郎: "反射鏡を用いた全方位カメラにおける画像の照度について"情報処理学会論文誌--コンピュータビジョンとイメージメディア. 42-SIG13. 71-80 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出口光一郎: "画像認識論講義"昭晃堂. 183 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Deguchi: "Detection and enhancement of line structures in an image by anisotropic diffusion"Pattern Recognition Letters. Vol.23. 1399-1405 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Okatani, S.Kubota, K.Deguchi: "Self-calibration of Multi-view Camera System by Stepwise Application of Camera Models"Computer Vision and Image Media. Vol.43, no.SIG11(CVIM 5). 33-42 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Deguchi, Kawamata, Kanae, Hontani, Wakabayashi: "3D Fundus Shape Reconstruction and Display from Stereo Fundus Images"IEICE Trans. On Information and Systems. Vol.E83-D, no.7. 1408-1414 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Okatani, K.Deguchi: "Shape Reconstruction from Shading by Evolution of Equal Height Contours for Diffuse Non-Lambertian Reflectance"Journal of Information Processing Society of Japan. Vol.14, no.1. 92-100 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Deguchi, S.Hiura: "3-D Reconstruction by Visual Sensors-Active Visual Sensors for Distributed Vision"Journal of the Robotics Society of Japan. Vol.19, no.4. 420-428 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Okatani, K.Deguchi: "On the Image Irradiance of Omnidirectional Cameras Using Mirrors"Journal of Information Processing Society of Japan-Computer Vision and Image Media. Vol.42, no.SIG13(CVIM 3). 71-80 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Deguchi: "Introductory Lectures on Computer Vision (in Japanese)"Shoukoudou. 183 (2002)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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