Our research interests are 3D image sensing and visualization using integral imaging.

What is Integral Imaging?

Integral imaging is three-dimensional(3D) image obtaining and visualization method. It can provides 3D image with full-parallax, full color, continious view-point. Integral imaging use only three devices; lenslet-array, image sensor, and display.

Integral imaging

Occlusion removal

In integral imaging method, captured image obtains depth information of object. By using this information, Occlusion removal technique can be performed.

Elemental images
Occlusion removed image

Photon counting

Photon Counting is one of the photography method in darken situation. It obtains picture by counting number of photons. By combining this method and integral imaging, it becomes possible to shoot in place with few light sources. This feature can be applied to image acquisition in darken situation, e.f. night driving.

Input image
Darken image
Photon counted image

Peplography

Peplography is one of the scatter media removal technique. It’s performed by statistical estimation and photon counting system.

Input image
Scattering image
Scatter removed image

3D biological imaging

3D biological imaging is 3D imaging technique for small livings observation. It performed by applying integral imaging and MALT(Moving Array-Lenslet Technique) to the microscopy. This technique can obtain 3D imformation of small cells(>10μm) with high resolution and continuous viewpoint.

Normal Microscopy
3D biological imaging
3D biological imaging system

PERT – Pixel of Elemental images Re-arrangement Technique

PERT is one of the reconstruction method of integral imaging. Considering the position information of each pixel when each elemental image overlaps, reconstruction is performed only by sorting pixels. This technique

PERT

Members

Principal Investigator
  1. Dr. Min-Chul LEE
Master’s Students
  1. Mr. Naohiro KIKUTAKE (B.S. from Kyushu Institute of Technology)
  2. Mr. Masaharu TASHIRO (B.S. from Kyushu Institute of Technology)
  3. Mr. Jae-Hoon LEE (B.S. from Hankyong National University)
Undergraguates
  1. Mr. Naoto KITAGAWA (B.S. in Kyushu Institute of Technology)
Alumni
  1. Mr. Kotaro INOUE (Ph.D. Student in Hankyong National University)
  2. Mr. Tomoaki FUJISHIMA (Complete Master’s degree)
Visiting Scholars
  1. Dr. Myungjin CHO (Associate Professor, Hankyong National University)
  2. Mr. Byeongwoo CHO (Master’s Student, Hankyong National University)
  3. Ms. Hui YUN(Master’s Student, Hankyong National University)
Collaborations
  1. Hankyong National University (Prof. Myungjin CHO)
  2. HoloLab in Korea (Dr. Donghak SHIN)

Publications

International peer-reviewed journal papers
  1. Kotaro Inoue, Min-Chul Lee, Bahram Javidi and Myungjin Cho:Improved 3D integral imaging reconstruction with elemental image pixel rearrangement, Journal of Optics, Vol.20, No.2, 025703(8pp)(2018.1.19)
  2. Min-Chul Lee, Jaeseung Han, and Myungjin Cho :3D Visualization Technique for Occluded Objects in Integral Imaging Using Modified Smart Pixel Mapping, Journal of information and communication convergence engineering., Vol.15, No.4, pp.256-261(2018.1)
  3. Min-Chul Lee, Kotaro Inoue, Masaharu Tashiro, and Myungjin Cho :Three-Dimensional Visualization Technique of Occluded Objects Using Integral Imaging with Plenoptic Camera, Journal of information and communication convergence engineering., Vol.15, No.3, pp.193-198(2017.9)
  4. Min-Chul Lee, Kotaro Inoue, Cheol-Su Kim, and Myungjin Cho:Regeneration of elemental images in integral imaging for occluded objects using a plenoptic camera, CHINESE OPTICS LETTERS, Vol.14, No.12, pp. 121101-1- 121101-5 (2016.12.10)
  5. Kotaro Inoue, Min-Chul Lee, Cheol-Su Kim, and Myungjin Cho:Color Compensation of an Underwater Imaging System Using Electromagnetic Wave Propagation, Journal of information and communication convergence engineering., Vol.14, No.3, pp.200-206(2016.9)
  6. Yongri Piao, Luyan Xing, Miao Zhang, and Min-Chul Lee:Resolution Enhanced Computational Integral Imaging Reconstruction by Using Boundary Folding Mirrors, Journal of the Optical Society of Korea, Vol. 20, No. 3, pp. 363-367(2016.6)
  7. Jae-Young Jang, Kotaro Inoue, Min-Chul Lee, and Myungjin Cho: Information Authentication of Three-Dimensional Photon Counting Double Random Phase Encryption Using Nonlinear Maximum Average Correlation Height Filter, Journal of the Optical Society of Korea, Vol. 20, No. 2, pp. 228-233(2016.4)
  8. Min-Chul Lee, Kotaro Inoue, and Myungjin Cho: Three-Dimensional Automatic Target Recognition System Based on Optical Integral Imaging Reconstruction, Journal of information and communication convergence engineering., Vol.14, No.1, pp.51-56(2016.3)
  9. Ji-Young Kang, Byung-Soo Chun, Min-Chul Lee, Jae-Suk Choi, In Soon Choi & Yong-Ki Hong : Anti-inflammatory Activity and Chemical Composition of Essential Oil Extracted with Supercritical CO2 from the Brown Seaweed Undaria pinnatifida, Journal of Essential Oil Bearing Plants, Vol.19, No.1 ,pp. 46-51(2016)
  10. Min-Chul Lee, Kotaro Inoue, and Myungjin Cho: Improved 3D Resolution Analysis of N-Ocular Imaging Systems with the Defocusing Effect of an Imaging Lens, Journal of information and communication convergence engineering., Vol.13, No.4, pp.270-274(2015)
  11. Min-Chul Lee, Kotaro Inoue, Naoki Konishi, and Joon-Jae Lee : Depth Extraction of Partially Occluded 3D Objects Using Axially Distributed Stereo Image Sensing, Journal of information and communication convergence engineering., Vol.13, No.4, pp.275-279(2015)
  12. Min-Chul Lee, Naoki Konishi and Hitoshi Fujii : Development of a handheld blood flow measurement system using laser speckle flowgraphy, Optical Review, Vol.22, No.2, pp.308-314 (2015)

Presentations

International peer-reviewed presentations
  1. High-Speed Reconstruction Technique in Photon Counting Integral Imaging
    Naohiro Kikutake, Kotaro Inoue, Myungjin Cho, and Min-Chul Lee
    The 17th International meeting on Information Display, 2017.08.28, Busan, Korea
  2. Enhanced Occlusion Removal of Synthetic Aperture Integral Imaging Using Multiple Variances
    Tomoaki Fujishima, Kotaro Inoue, Myungjin Cho, Naohiro Kikutake, Naoki Konishi, and Min-Chul Lee
    The 17th International meeting on Information Display, 2017.08.28, Busan, Korea
  3. High Speed and Resolution Three-Dimensional Reconstruction Algorithm Using Pixel
    Min-Chul Lee, Kotaro Inoue, and Myungjin Cho
    The 17th International meeting on Information Display, 2017.08.28, Busan, Korea
  4. Occlusion removal considering the erasing part using variance map
    Kotaro Inoue, Min-Chul Lee, Naoki Konishi, and Myungjin Cho
    The 16th International meeting on Information Display, P2-62,2016.08.25, Jeju, Korea
  5. Development of active state measurements system for the cells in solution
    Tenshin Honda, Kotaro Inoue, Min-Chul Lee and Naoki Konishi
    International Conference on ICT Convergence 2015(ictc2015) pp. 970-973, 2015.10.28, Jeju, Korea
  6. Improved visualization of three-dimensional photon counting integral imaging using background noise removal
    Ki-Ok Cho, Donghak Shin, Min-Chul Lee, and Myungjin Cho
    The 15th International meeting on Information Display, P2-74, 2015.08.21, Daegu, Korea
  7. Resolution analysis of N-ocular imaging systems with lens characteristics
    Myungjin Cho, Donghak Shin, and Min-Chul Lee
    The 15th International meeting on Information Display, P2-73,2015.08.21, Daegu, Korea
  8. Depth extraction of 3D object using axially distributed image sensor array
    Min-Chul Lee, Kotaro Inoue, Naoki Konishi, and Donghak Shin
    The 15th International meeting on Information Display, P2-75, 2015.08.21, Daegu, Korea