A digital image watermarking method using gyrator transform and dyadic wavelet transform. Record of Joint Conference of Electrical and Electronics Engineers in Kyushu. 2020. 2020. 400-401
Taketo Kawashima, Hiroyasu Hamada, Ryuji Ohura. Watermarking Technique by Combining Lifting Scheme and Dual-Tree Complex Discrete Wavelet Transform. Proceedings of the International Symposium on Innovative Engineering 2021 (ISIE2021). 2021. 303-310
Arata Ide, Ryuji Ohura, Teruya Minamoto. Digital Image Watermarking Method Using The Gyrator And Dyadicwavelet Transforms. 2020 International Conference on Wavelet Analysis and Pattern Recognition (ICWAPR). 2020. 84-89
Ryuji Ohura, Hajime Omura, Yasuhisa Sakata, Teruya Minamoto. Computer-Aided Diagnosis Method for Detecting Early Esophageal Cancer from Endoscopic Image by Using Dyadic Wavelet Transform and Fractal Dimension. Advances in Intelligent Systems and Computing. 2016. 448. 929-938
Hiroki Matsunaga, Hajime Omura, Ryuji Ohura, Teruya Minamoto. Daubechies Wavelet-Based Method for Early Esophageal Cancer Detection from Flexible Spectral Imaging Color Enhancement Image. Advances in Intelligent Systems and Computing. 2016. 448. 939-948
A watermarking scheme for image authentication and tamper detection using the dual-tree complex discrete wavelet transform and interval arithmetic
(電気関係学会九州支部第65回連合大会国際セッション 2012)