Tetsushi Ohki

Publication Activity (10 Years)

Years Active: 2006-2024
Publications (10 Years): 46

Top Topics

Biometric Authentication

Top Venues

Publications

Kota Numada, Shinnosuke Nozaki, Takumi Takaiwa, Tetsushi Ohki, Masakatsu Nishigaki
Perceiving Human Psychological Consistency: Attack Detection Against Advanced Persistent Social Engineering. EIDWT (2024)
Takumi Takaiwa, Shinnosuke Nozaki, Kota Numada, Tsubasa Shibata, Sana Okumura, Soichi Takigawa, Tetsushi Ohki, Masakatsu Nishigaki
Electrical Muscle Stimulation System for Automatic Reproduction of Secret Information Without Exposing Biometric Data. HCI (46) (2024)
Jun Narita, Takao Murakami, Hideitsu Hino, Masakatsu Nishigaki, Tetsushi Ohki
Synthesizing differentially private location traces including co-locations. Int. J. Inf. Sec. 23 (1) (2024)
Toi Kojima, Tomoya Aiba, Soshi Maeda, Hiromi Arai, Masakatsu Nishigaki, Tetsushi Ohki
Are Dark Patterns Self-destructive for Service Providers?: Revealing Their Impacts on Usability and User Satisfaction. HCI (37) (2024)
Tussoun Jitpanyoyos, Yuya Sato, Soshi Maeda, Masakatsu Nishigaki, Tetsushi Ohki
ExpressionAuth: Utilizing Avatar Expression Blendshapes for Behavioral Biometrics in VR. VR Workshops (2024)
Ren Takeuchi, Rikima Mitsuhashi, Masakatsu Nishigaki, Tetsushi Ohki
Ensemble Malware Classifier Considering PE Section Information. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107 (3) (2024)
Ryo Iijima, Tatsuya Takehisa, Tetsushi Ohki, Tatsuya Mori
The Catcher in the Eye: Recognizing Users by their Blinks. AsiaCCS (2024)
Takahiko Arakawa, Yuya Sato, Hitoshi Sakano, Tetsushi Ohki
Development of a Robust Ear Recognition Algorithm using Planar Approximation. APSIPA ASC (2023)
Mei Suzuki, Ryo Iijima, Kazuki Nomoto, Tetsushi Ohki, Tatsuya Mori
PinchKey: A Natural and User-Friendly Approach to VR User Authentication. EuroUSEC (2023)
Sana Okumura, Tomoya Amagasa, Tsubasa Shibata, Takumi Yamamoto, Tadakazu Yamanaka, Tetsushi Ohki, Masakatsu Nishigaki
Scheme for Selection of Deceptions as a Countermeasure for Insider Threats. BWCCA (2023)
Ziga Emersic, Tetsushi Ohki, Muku Akasaka, Takahiko Arakawa, Soshi Maeda, M. Okano, Yuya Sato, Anjith George, Sébastien Marcel, Iyyakutti Iyappan Ganapathi, Syed Sadaf Ali, Sajid Javed, Naoufel Werghi, S. G. Isik, Erdi Saritas, Hazim Kemal Ekenel, V. Hudovernik, Jan Niklas Kolf, Fadi Boutros, Naser Damer, G. Sharma, Aman Kamboj, Aditya Nigam, D. K. Jain, G. Cámara-Chávez, Peter Peer, Vitomir Struc
The Unconstrained Ear Recognition Challenge 2023: Maximizing Performance and Minimizing Bias. IJCB (2023)
Ayumi Serizawa, Ryosuke Okudera, Yumo Ouchi, Mizuho Yoshihira, Yuya Shiomi, Naoya Nitta, Masataka Nakahara, Akira Baba, Yutaka Miyake, Tetsushi Ohki, Masakatsu Nishigaki
Improving Palmprint-Region Estimation for ID-Less Palmprint Recognition. BWCCA (2022)
Shinnosuke Nozaki, Ayumi Serizawa, Mizuho Yoshihira, Masahiro Fujita, Yoichi Shibata, Tadakazu Yamanaka, Nori Matsuda, Tetsushi Ohki, Masakatsu Nishigaki
Multi-observed Multi-factor Authentication: A Multi-factor Authentication Using Single Credential. NBiS (2022)
Mizuho Yoshihira, Ayumi Serizawa, Ryosuke Okudera, Yumo Ouchi, Yuya Shiomi, Naoya Nitta, Masataka Nakahara, Akira Baba, Yutaka Miyake, Tetsushi Ohki, Masakatsu Nishigaki
Improving Rank-N Identification Rate of Palmprint Identification Using Permutation-Based Indexing. HCI (32) (2022)
Yusuke Shimizu, Tetsushi Ohki, Yusuke Yamamoto
Privacy-aware Snippets: Enhancing Assessment of Balance between Privacy Risks and Benefits in Web Search. GoodIT (2022)
Kohei Yagyu, Ren Takeuchi, Masakatsu Nishigaki, Tetsushi Ohki
Improving Classification Accuracy by Optimizing Activation Function for Convolutional Neural Network on Homomorphic Encryption. BWCCA (2022)
Takamichi Terada, Vo Ngoc Khoi Nguyen, Masakatsu Nishigaki, Tetsushi Ohki
Improving Robustness and Visibility of Adversarial CAPTCHA Using Low-Frequency Perturbation. AINA (2) (2022)
Muku Akasaka, Soshi Maeda, Yuya Sato, Masakatsu Nishigaki, Tetsushi Ohki
Model-Free Template Reconstruction Attack with Feature Converter. BIOSIG (2022)
Takumi Kitagawa, Tetsushi Ohki, Yuki Koizumi, Yoshinobu Kawabe, Toru Hasegawa, Masakatsu Nishigaki
Deterrence-Based Trust: A Study on Improving the Credibility of Social Media Messages in Disaster Using Registered Volunteers. NBiS (2021)
Jun Narita, Yayoi Suganuma, Masakatsu Nishigaki, Takao Murakami, Tetsushi Ohki
Synthesizing Privacy-Preserving Location Traces Including Co-locations. DPM/CBT@ESORICS (2021)
Hiroto Tamiya, Toshiyuki Isshiki, Kengo Mori, Satoshi Obana, Tetsushi Ohki
Improved Post-quantum-secure Face Template Protection System Based on Packed Homomorphic Encryption. BIOSIG (2021)
Vo Ngoc Khoi Nguyen, Takamichi Terada, Masakatsu Nishigaki, Tetsushi Ohki
Examining of Shallow Autoencoder on Black-box Attack against Face Recognition. APSIPA ASC (2021)
Yumo Ouchi, Ryosuke Okudera, Yuya Shiomi, Kota Uehara, Ayaka Sugimoto, Tetsushi Ohki, Masakatsu Nishigaki
Study on Possibility of Estimating Smartphone Inputs from Tap Sounds. APSIPA (2020)
Koki Mukaihira, Yasuyoshi Jinno, Takashi Tsuchiya, Tetsushi Ohki, Kenta Takahashi, Wakaha Ogata, Masakatsu Nishigaki
Communication Protocol Between Humans and Bank Server Secure Against Man-in-the-Browser Attacks. IHSI (2020)
Yayoi Suganuma, Jun Narita, Masakatsu Nishigaki, Tetsushi Ohki
Understanding the Impact of Service Trials on Privacy Disclosure. HCI (40) (2020)
Ayaka Sugimoto, Yuya Shiomi, Akira Baba, Norihiro Okui, Tetsushi Ohki, Yutaka Miyake, Masakatsu Nishigaki
A Liveness Detection Method for Palmprint Authentication. IHSI (2020)
Yuya Shiomi, Genki Sugimoto, Ayaka Sugimoto, Kota Uehara, Masahiro Fujita, Yuto Mano, Tetsushi Ohki, Masakatsu Nishigaki
Micro Biometric Authentication Using Fingernail Surfaces: A Study of Practical Use. AINA (2020)
Tetsushi Ohki, Vishu Gupta, Masakatsu Nishigaki
Efficient Spoofing Attack Detection against Unknown Sample using End-to-End Anomaly Detection. APSIPA (2019)
Yosuke Kaga, Masakazu Fujio, Kenta Takahashi, Tetsushi Ohki, Masakatsu Nishigaki
PDH : Probabilistic deep hashing based on MAP estimation of Hamming distance. CoRR (2019)
Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable indexing based on low-rank approximation of correlation-invariant random filtering for fast and secure biometric identification. Pattern Recognit. Lett. 126 (2019)
Yoshinobu Kawabe, Yuki Koizumi, Tetsushi Ohki, Masakatsu Nishigaki, Toru Hasegawa, Tetsuhisa Oda
On Trust Confusional, Trust Ignorant, and Trust Transitions. IFIPTM (2019)
Yosuke Kaga, Masakazu Fujio, Kenta Takahashi, Tetsushi Ohki, Masakatsu Nishigaki
PDH : Probabilistic Deep Hashing Based on Map Estimation of Hamming Distance. ICIP (2019)
Mohammad Jahanian, Toru Hasegawa, Yoshinobu Kawabe, Yuki Koizumi, Amr Magdy, Masakatsu Nishigaki, Tetsushi Ohki, K. K. Ramakrishnan
DiReCT: Disaster Response Coordination with Trusted Volunteers. ICT-DM (2019)
Takao Murakami, Ryo Fujita, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable Permutation-Based Indexing for Secure and Efficient Biometric Identification. IEEE Access 7 (2019)
Toshiki Honda, Kohei Mukaiyama, Takeharu Shirai, Tetsushi Ohki, Masakatsu Nishigaki
Ransomware Detection Considering User's Document Editing. AINA (2018)
Yosuke Takahashi, Masashi Endo, Hiroaki Matsuno, Hiroaki Muramatsu, Tetsushi Ohki, Masakatsu Nishigaki
A Study on Human Reflex-Based Biometric Authentication Using Eye-Head Coordination. NBiS (2018)
Genki Sugimoto, Masahiro Fujita, Yuto Mano, Tetsushi Ohki, Masakatsu Nishigaki
Micro Disposable Biometric Authentication: An Application Using Fingernail Minute Textures for Nonsensitive Services. ICBSP (2018)
Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable Indexing Based on Low-rank Approximation of Correlation-invariant Random Filtering for Fast and Secure Biometric Identification. CoRR (2018)
Aki Harada, Yasushi Yamazaki, Tetsushi Ohki
Biometric Bit String Generation for Smart-Phones Using Voice Data. APSIPA (2018)
Masakazu Fujio, Yosuke Kaga, Takao Murakami, Tetsushi Ohki, Kenta Takahashi
Face/Fingerphoto Spoof Detection under Noisy Conditions by using Deep Convolutional Neural Network. BIOSIGNALS (2018)
Keisuke Inoue, Toshiki Honda, Kohei Mukaiyama, Tetsushi Ohki, Masakatsu Nishigaki
Automatic Examination-Based Whitelist Generation for XSS Attack Detection. BWCCA (2018)
Tetsushi Ohki, Akira Otsuka
Theoretical vulnerabilities in map speaker adaptation. ICASSP (2017)
Yosuke Kaga, Masakazu Fujio, Ken Naganuma, Kenta Takahashi, Takao Murakami, Tetsushi Ohki, Masakatsu Nishigaki
A Secure and Practical Signature Scheme for Blockchain Based on Biometrics. ISPEC (2017)
Yasushi Yamazaki, Tetsushi Ohki
Toward More Secure and Convenient User Authentication in Smart Device Era. IEICE Trans. Inf. Syst. (10) (2017)
Tetsushi Ohki, Akira Otsuka
A Study on Autoencoder-based Reconstruction Method for Wi-Fi Location Data with Erasures. MPS@CCS (2017)
Takao Murakami, Tetsushi Ohki, Kenta Takahashi
Optimal sequential fusion for multibiometric cryptosystems. Inf. Fusion 32 (2016)
Tetsushi Ohki, Akira Otsuka
Theoretical vulnerability in likelihood-ratio-based biometric verification. IJCB (2014)
Yuuki Goubaru, Yasushi Yamazaki, Takeru Miyazaki, Tetsushi Ohki
A consideration on a common template-based biometric cryptosystem using on-line signatures. GCCE (2014)
Toshiyuki Isshiki, Toshinori Araki, Kengo Mori, Satoshi Obana, Tetsushi Ohki, Shizuo Sakamoto
New Security Definitions for Biometric Authentication with Template Protection: Toward covering more threats against authentication systems. BIOSIG (2013)
Yoshiaki Isobe, Tetsushi Ohki, Naohisa Komatsu
Security performance evaluation for biometric template protection techniques. Int. J. Biom. 5 (1) (2013)
Tetsushi Ohki, Seira Hidano, Tatsuya Takehisa
Evaluation of wolf attack for classified target on speaker verification systems. ICARCV (2012)
Seira Hidano, Tetsushi Ohki, Kenta Takahashi
Evaluation of security for biometric guessing attacks in biometric cryptosystem using fuzzy commitment scheme. BIOSIG (2012)
Seira Hidano, Tetsushi Ohki, Naohisa Komatsu, Kenta Takahashi
A metric of identification performance of biometrics based on information content. ICARCV (2010)
Seira Hidano, Tetsushi Ohki, Naohisa Komatsu, Masao Kasahara
On biometric encryption using fingerprint and it's security evaluation. ICARCV (2008)
Tetsushi Ohki, Shiro Akatsuka, Naohisa Komatsu, Masao Kasahara
Safety of templates in biometric person authentication using error-correcting code. Security, Steganography, and Watermarking of Multimedia Contents (2006)