Contact Information

Tsubasa Hirakawa

Visual Information Science Lab.

Department of Information Engineering,

Graduate School of Engineering,

Hiroshima University, Japan

1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan

E-mail: hirakawa [at] eml.hiroshima-u.ac.jp

Curriculum Vitae


Research Interests

Computer Vision, Pattern Recognition, Machine Learning, Image Processing


Publication

Last updated: Nov. 28, 2016.

Journal Papers

  1. Tsubasa Hirakawa, Toru Tamaki, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Yoko Kominami, Shinji Tanaka, "Defocus-aware Dirichlet particle filter for stable endoscopic video framerecognition," Artificial Intelligence in Medicine, vol. 68, pp. 1-16, 2016. [online] [preprint]
  2. Yoko Kominami, Shigeto Yoshida, Shinji Tanaka, Yoji Sanomura, Tsubasa Hirakawa, Bisser Raytchev, Toru Tamaki, Tetsusi Koide, Kazufumi Kaneda, Kazuaki Chayama, “Computer-aided diagnosis of colorectal polyp histology by using a real-time image recognition system and narrow-band imaging magnifying colonoscopy,” Gastrointestinal Endoscopy, Vol. 83, No. 3, pp. 643-649, Mar. 2016. [online]

Conference Papers

  1. Tsubasa Hirakawa, Toru Tamaki, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Hiroshi Mieno, Shinji Tanaka, "Discriminative Subtree Selection for NBI Endoscopic Image Labeling," In Proc. of International Symposium on Biomedical Engineering, pp.170-171, Nov. 2016.
  2. Takumi Okamoto, Tetsuhi Koide, Anh-Tuan Hoang, Tatsuya Shimizu, Koki Sugi, Toru Tamaki, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Shigeto Yoshida, Hiroshi Mieno, Shinji Tanaka, "A Real-Time Feature Extraction Method for Colorectal Endoscopic Images toward Computer-Aided Diagnosis," In Proc. of International Symposium on Biomedical Engineering, pp.162-163, Nov. 2016.
  3. Takumi Okamoto, Tetsuhi Koide, Anh-Tuan Hoang, Tatsuya Shimizu, Koki Sugi, Toru Tamaki, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Shigeto Yoshida, Hiroshi Mieno, Shinji Tanaka, "A Real-Time Feature Transformation Method for Colorectal Endoscopic Images toward Computer-Aided Diagnosis," In Proc. of International Symposium on Biomedical Engineering, pp.164-165, Nov. 2016.
  4. Takumi Okamoto, Tetsuhi Koide, Anh-Tuan Hoang, Tatsuya Shimizu, Koki Sugi, Toru Tamaki, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Shigeto Yoshida, Hiroshi Mieno, Shinji Tanaka, "A Real-Time Type Identification Method for Colorectal Endoscopic Images toward Computer-Aided Diagnosis," In Proc. of International Symposium on Biomedical Engineering, pp.166-167, Nov. 2016.
  5. Shoji Sonoyama, Toru Tamaki, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Hiroshi Mieno and Shinji Tanaka, "Transfer Learning for Endoscopic Image Classification," In Proc. of The Korea-Japan joint workshop on Frontiers of Computer Vision (FCV2016), pp.258-262, Feb. 2016.
  6. Toru Tamaki, Shoji Sonoyama, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Hiroshi Mieno and Shinji Tanaka, "Computer-Aided Colorectal Tumor Classification in NBI Endoscopy Using CNN Features," In Proc. of The Korea-Japan joint workshop on Frontiers of Computer Vision (FCV2016), pp. 61-65, Feb. 2016.
  7. Shoji Sonoyama, Tsubasa Hirakawa, Toru Tamaki, Takio Kurita, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Yoko Kominami, Shinji Tanaka, "Transfer Learning for Bag-of-Visual Words Approach to NBI endoscopic image classification," In Proc. of the IEEE International Conference of Engineering in Medicine and Biology Society (EMBC2015), pp. 25-29, Aug. 2015.
  8. Shoji Sonoyama, Toru Tamaki, Tsubasa Hirakawa, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Yoko Kominami, Shigeto Yoshida, Shinji Tanaka, "Trade-off between speed and performance for colorectal endoscopic NBI image classification," In Proc. of SPIE Medical Imaging 2015, vol. 9413, (Mar. 2015).
  9. Tsubasa Hirakawa, Toru Tamaki, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Yoko Kominami, Shigeto Yoshida, Shinji Tanaka, "SVM-MRF segmentation of colorectal NBI endoscopic images," In Proc. of the IEEE International Conference of Engineering in Medicine and Biology Society (EMBC2014), pp.4739-4742, (Aug. 2014).
  10. Tsubasa Hirakawa, Toru Tamaki, Bisser Raytchev, Kazufumi Kaneda, Tetsushi Koide, Yoko Kominami, Rie Miyaki, Taiji Matsuo, Shigeto Yoshida, Shinji Tanaka, "Smoothing posterior probabilities with a particle filter of dirichlet distribution for stabilizing colorectal NBI endoscopy recognition,"" In Proc. of the IEEE International Conference on Image Processing (ICIP2013), pp. 621-625, (Sept. 2013).
  11. Tsubasa Hirakawa, Toru Tamaki, Bisser Raychev, Kazufumi Kaneda, Tetsushi Koide, Shigeto Yoshida, Yoko Kominami, Taiji Matsuo, Rie Miyaki, Shinji Tanaka, "Labeling colorectal NBI zoom- videoendoscope image sequences with MRF and SVM," In Proc. of the IEEE International Conference of Engineering in Medicine and Biology Society (EMBC2013), pp.4831-4834, (Jul. 2013).
  12. Rie Miyaki, Shigeto Yoshida, Shinji Tanaka, Yoko Kominami, Yoji Sanomura, Taiji Matsuo, Shiro Oka, Tsubasa Hirakawa, Bisser Raytchev, Toru Tamaki, Tsubasa Mishima, Satoshi Shigemi, Tetsushi Koide, Kazufumi Kaneda, Masaharu Yoshihara, Kazuaki Chayama, "Usefulness of magnifying endoscopy with Blue LASER Imaging for diagnosis of early gastric cancer," American Society for Gastrointestinal Endoscopy (ASGE) 2013, May 18-21 2013, Orlando.
  13. Yoko Kominami, Shigeto Yoshida, Shinji Tanaka, Rie Miyaki, Yoji Sanomura, Taiji Matsuo, Hiroyuki Kanao, Shiro Oka, Tsubasa Hirakawa, Tsubasa Mishima, Satoshi Shigemi, Bisser Raytchev, Toru Tamaki, Tetsusi Koide, Kazuhumi Kaneda, Kazuaki Chayama, "Quantitative analysis of NBI magnifying colonoscopy images based on Bag-of-Features for diagnosis of colorectal tumors," American Society for Gastrointestinal Endoscopy (ASGE) 2013, May 18-21 2013, Orlando.