A method of detecting lines using local polar coordinates. - Koji Ichikawa; Masanori Izumida; Kenji Murakami (Syst. Comput. Jpn., 1997)

The Number of Effective Pixels for Digital Still Cameras and Its Picture Quality. - Masaya Tamaru; Masahiko Sugimoto; Koji Ichikawa; Kazuhiko Takemura (PICS, 2003)

Height power estimation with Radio Environment Database in urban area. - Koji Ichikawa; Hao Wang; Koya Sato; Takeo Fujii (ICUFN, 2015)

Radio environment map construction using Hidden Markov Model in multiple primary user environment. - Koji Ichikawa; Takeo Fujii (ICNC, 2017)

Unsupervised Qualitative Scoring for Binary Item Features. - Koji Ichikawa; Hiroshi Tamano (Data Sci. Eng., 2020)

Image-Based Relation Classification Approach for Table Structure Recognition. - Koji Ichikawa (ICDAR (2), 2021)

New Classes of the Greedy-Applicable Arm Feature Distributions in the Sparse Linear Bandit Problem. - Koji Ichikawa; Shinji Ito; Daisuke Hatano; Hanna Sumita; Takuro Fukunaga; Naonori Kakimura; Ken-ichi Kawarabayashi (AAAI, 2024)

Evaluation of Ground Terminal against Noise by Direct Power Injection Method. - Takashi Nomura; Mitsuhiro Hasegawa; Ko Oyama; Yosuke Kondo; Koji Ichikawa (EMC Compo, 2024)