| 2024 | ICIP | Fine-Tuning Text-To-Image Diffusion Models for Class-Wise Spurious Feature Generation. | AprilPyone MaungMaung, Huy H. Nguyen, Hitoshi Kiya, Isao Echizen |
| 2022 | ICMLC | Security Evaluation of Compressible Image Encryption for Privacy-Preserving Image Classification Against Ciphertext-Only Attacks. | Tatsuya Chuman, Hitoshi Kiya |
| 2022 | ICMLC | An Encryption Method of Convmixer Models without Performance Degradation. | Ryota Iijima, Hitoshi Kiya |
| 2022 | ICMLC | An Access Control Method with Secret Key for Semantic Segmentation Models. | Teru Nagamori, Ryota Iijima, Hitoshi Kiya |
| 2021 | ICIP | Multi-Color Balance For Color Constancy. | Teruaki Akazawa, Yuma Kinoshita, Hitoshi Kiya |
| 2021 | ICIP | Transfer Learning-Based Model Protection With Secret Key. | MaungMaung AprilPyone, Hitoshi Kiya |
| 2021 | ICIP | Separated-Spectral-Distribution Estimation Based on Bayesian Inference with Single RGB Camera. | Yuma Kinoshita, Hitoshi Kiya |
| 2020 | ICASSP | Sparse Modeling on Distributed Encryption Data. | Yukihiro Bandoh, Takayuki Nakachi, Hitoshi Kiya |
| 2020 | ICASSP | Fixed Smooth Convolutional Layer for Avoiding Checkerboard Artifacts in CNNS. | Yuma Kinoshita, Hitoshi Kiya |
| 2020 | ICASSP | Privacy-Preserving Pattern Recognition Using Encrypted Sparse Representations in L0 Norm Minimization. | Takayuki Nakachi, Yitu Wang, Hitoshi Kiya |
| 2020 | ICIP | Encryption Inspired Adversarial Defense For Visual Classification. | April Pyone Maung Maung, Hitoshi Kiya |
| 2019 | ICIP | An Image Identification Scheme Of Encrypted Jpeg Images For Privacy-Preserving Photo Sharing Services. | Kenta Iida, Hitoshi Kiya |
| 2019 | ICIP | Convolutional Neural Networks Considering Local and Global Features for Image Enhancement. | Yuma Kinoshita, Hitoshi Kiya |
| 2019 | ICIP | Two-Layer Near-Lossless HDR Coding with Backward Compatibility to JPEG. | Hiroyuki Kobayashi, Osamu Watanabe, Hitoshi Kiya |
| 2019 | ICIP | Privacy-Preserving Deep Neural Networks with Pixel-Based Image Encryption Considering Data Augmentation in the Encrypted Domain. | Warit Sirichotedumrong, Takahiro Maekawa, Yuma Kinoshita, Hitoshi Kiya |
| 2019 | Interspeech | Investigation on Blind Bandwidth Extension with a Non-Linear Function and its Evaluation of x-Vector-Based Speaker Verification. | Ryota Kaminishi, Haruna Miyamoto, Sayaka Shiota, Hitoshi Kiya |
| 2018 | ICASSP | Multi-Exposure Image Fusion Based on Exposure Compensation. | Yuma Kinoshita, Sayaka Shiota, Hitoshi Kiya, Taichi Yoshida |
| 2018 | ICIP | Automatic Exposure Compensation for Multi-Exposure Image Fusion. | Yuma Kinoshita, Sayaka Shiota, Hitoshi Kiya |
| 2018 | ICIP | Super-Resolution Using Convolutional Neural Networks Without Any Checkerboard Artifacts. | Yusuke Sugawara, Sayaka Shiota, Hitoshi Kiya |
| 2018 | ISCAS | Lossless Two-Layer Coding using Histogram Packing Technique for HDR Images. | Osamu Watanabe, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2018 | PCS | Two-layer Lossless HDR Coding considering Histogram Sparseness with Backward Compatibility to JPEG. | Osamu Watanabe, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2017 | ICASSP | On the security of block scrambling-based ETC systems against jigsaw puzzle solver attacks. | Tatsuya Chuman, Kenta Kurihara, Hitoshi Kiya |
| 2017 | ICASSP | Fast inverse tone mapping with Reinhard's global operator. | Yuma Kinoshita, Sayaka Shiota, Hitoshi Kiya |
| 2017 | ICIP | Robust image identification with secure features for JPEG images. | Kenta Iida, Hitoshi Kiya |
| 2017 | IWDW | A Blind Reversible Data Hiding Method for High Dynamic Range Images Taking Advantage of Sparse Histogram. | Masaaki Fujiyoshi, Hitoshi Kiya |
| 2016 | ISCAS | A structure of JPEG XT encoder considering effect of quantization error. | Osamu Watanabe, Ryo Suzuki, Hitoshi Kiya |
| 2016 | ISCAS | Subset noise bias compensation for tone-mapping and up-scaling of JPEG images. | Masahiro Iwahashi, Tin Moe Aye, Taichi Yoshida, Hitoshi Kiya |
| 2016 | ISCAS | Optimum SPT allocation for multipliers of minimum lifting 2D wavelet transform. | Masahiro Iwahashi, Teerapong Orachon, Tin Moe Aye, Taichi Yoshida, Hitoshi Kiya |
| 2015 | ICASSP | An Encryption-then-Compression system for JPEG 2000 standard. | Osamu Watanabe, Akira Uchida, Takahiro Fukuhara, Hitoshi Kiya |
| 2015 | PCS | An encryption-then-compression system for JPEG standard. | Kenta Kurihara, Sayaka Shiota, Hitoshi Kiya |
| 2015 | PSIVT | A Robust Identification Scheme for JPEG XR Images with Various Compression Ratios. | Hiroyuki Kobayashi, Shoko Imaizumi, Hitoshi Kiya |
| 2014 | ICIP | Noise bias compensation of tone mapped noisy image. | Masahiro Iwahashi, Hitoshi Kiya |
| 2014 | ICIP | A cheat preventing method with efficient pixel expansion for Naor-Shamir's visual cryptography. | Shenchuan Liu, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2014 | ICIP | An integer tone mapping operation for HDR images in OpenEXR with denormalized numbers. | Tatsuya Murofushi, Toshiyuki Dobashi, Masahiro Iwahashi, Hitoshi Kiya |
| 2013 | ICASSP | A parallel implementation method of FFT-based full-search block matching algorithms. | Toshiyuki Dobashi, Hitoshi Kiya |
| 2013 | ICASSP | Two layer lossless coding of HDR images. | Masahiro Iwahashi, Hitoshi Kiya |
| 2013 | ICASSP | An integer tone mapping operation for hdr images expressed in floating point data. | Tatsuya Murofushi, Masahiro Iwahashi, Hitoshi Kiya |
| 2013 | ICIP | Three dimensional discrete wavelet transform with deduced number of lifting steps. | Masahiro Iwahashi, Teerapong Orachon, Hitoshi Kiya |
| 2013 | IWDW | A Cheat-Prevention Visual Secret Sharing Scheme with Minimum Pixel Expansion. | Shenchuan Liu, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2012 | ICASSP | A new technique of non-iterative super-resolution without boundary distortion. | Izumi Ito, Hitoshi Kiya |
| 2012 | ICASSP | Lossy compression of sparse histogram image. | Masahiro Iwahashi, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2012 | ICASSP | Hash based identification of JPEG 2000 images with different coding parameters. | Osamu Watanabe, Takahiro Fukuhara, Hitoshi Kiya |
| 2012 | ISCAS | A visually-lossless data hiding method based on histogram modification. | Masaaki Fujiyoshi, Hitoshi Kiya |
| 2012 | PCS | Fine rate control and high SNR coding for sparse histogram images. | Masahiro Iwahashi, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2011 | ICASSP | Fast identification of JPEG 2000 images for digital cinema profiles. | Osamu Watanabe, Takahiro Fukuhara, Hitoshi Kiya |
| 2011 | PSIVT | A Key Derivation Scheme for Hierarchical Access Control to JPEG 2000 Coded Images. | Shoko Imaizumi, Masaaki Fujiyoshi, Hitoshi Kiya, Naokazu Aoki, Hiroyuki Kobayashi |
| 2011 | VCIP | Lossless integer color transform for four color components. | Masahiro Iwahashi, Masanori Ogawa, Hitoshi Kiya |
| 2010 | ICASSP | A new lifting structure of non separable 2D DWT with compatibility to JPEG 2000. | Masahiro Iwahashi, Hitoshi Kiya |
| 2010 | ICASSP | A lossless condition of lifting DWT for specific DC values. | Masahiro Iwahashi, Hitoshi Kiya |
| 2010 | ICASSP | Double-search-window block matching using the fast fourier transform. | Zhen Li, Hitoshi Kiya |
| 2010 | ICIP | Optimumization of lifting structure of reversible KLT based on permutation of signal's order and sign. | Masahiro Iwahashi, Hitoshi Kiya |
| 2010 | ICIP | Reversible color transform with compatiblity to irreversible transform. | Masahiro Iwahashi, Hitoshi Kiya |
| 2010 | ICIP | Color-component bit allocation scheme for JPEG 2000 parallel codec. | Yoshihide Tonomura, Takayuki Nakachi, Daisuke Shirai, Tatsuya Fujii, Hitoshi Kiya |
| 2010 | PCS | Avoidance of singular point in reversible KLT. | Masahiro Iwahashi, Hitoshi Kiya |
| 2010 | PCS | FFT-based full-search block matching using overlap-add method. | Hidetake Sasaki, Zhen Li, Hitoshi Kiya |
| 2009 | ICASSP | Multiple-peak model fitting function for DCT sign phase correlation with non-integer shift precision. | Izumi Ito, Hitoshi Kiya |
| 2009 | ICASSP | Phase scrambling for blind image matching. | Izumi Ito, Hitoshi Kiya |
| 2009 | ICIP | Non separable 2D factorization of separable 2D DWT for lossless image coding. | Masahiro Iwahashi, Hitoshi Kiya |
| 2009 | ICIP | Identification of JPEG 2000 images in encrypted domain for digital cinema. | Osamu Watanabe, Tomonori Iida, Takahiro Fukuhara, Hitoshi Kiya |
| 2009 | ISCAS | Efficient Collusion Attack-free Access Control for Multidimensionally Hierarchical Scalability Content. | Shoko Imaizumi, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2008 | ICASSP | A new class of lifting wavelet transform for guaranteeing losslessness of specific signals. | Hitoshi Kiya, Masahiro Iwahashi, Osamu Watanabe |
| 2008 | ICIP | A scrambling method for Motion JPEG videos enabling moving objects detection from scrambled videos. | Masaaki Fujiyoshi, Keijiro Kuroiwa, Hitoshi Kiya |
| 2008 | ICIP | Hierarchical encryption using short encryption keys for scalable access control of JPEG 2000 coded images. | Noriaki Hashimoto, Shoko Imaizumi, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2008 | ICIP | A new class of image registration for guaranteeing secure data management. | Izumi Ito, Hitoshi Kiya |
| 2008 | ISCAS | A new structure of lifting wavelet for reducing rounding error. | Hitoshi Kiya, Masahiro Iwahashi, Osamu Watanabe |
| 2008 | MMM | Accurate Identifying Method of JPEG2000 Images for Digital Cinema. | Takahiro Fukuhara, Kazuhisa Hosaka, Hitoshi Kiya |
| 2007 | ICASSP | DCT Sign-Only Correlation with Application to Image Matching and the Relationship with Phase-Only Correlation. | Izumi Ito, Hitoshi Kiya |
| 2007 | ICIP | Fast Method for Joint Retrieval and Identification of JPEG Coded Images Based on DCT Sign. | Fitri Arnia, Ikue Iizuka, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2007 | ICIP | A Location-Map Free Reversible Data Hiding Method using Block-Based Single Parameter. | Masaaki Fujiyoshi, Shuji Sato, Hong Lin Jin, Hitoshi Kiya |
| 2007 | ICIP | Collusion Attack-Resilient Hierarchical Encryption of JPEG 2000 Codestreams with Scalable Access Control. | Shoko Imaizumi, Masaaki Fujiyoshi, Yoshito Abe, Hitoshi Kiya |
| 2007 | ICIP | Image Tamper Detection using Mathematical Morphology. | Mirei Kihara, Masaaki Fujiyoshi, Qing Tao Wan, Hitoshi Kiya |
| 2007 | ICIP | Codestream Domain Scrambling of Moving Objects Based on DCT Sign-only Correlation for Motion JPEG Movies. | Keijiro Kuroiwa, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2006 | ICASSP | Fast and Robust Identification Methods for JPEG Images with Various Compression Ratios. | Fitri Arnia, Ikue Iizuka, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2006 | ICIP | Hierarchical Encryption of Multimedia Contents for Access Control. | Masaaki Fujiyoshi, Wataru Saitou, Osamu Watanabe, Hitoshi Kiya |
| 2005 | ICIP | Modulo arithmetic-based image watermarking and its theoretical analysis of image-quality. | Masaaki Fujiyoshi, Yusuke Seki, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2005 | ICIP | Generalized hierarchical encryption of JPEG 2000 codestreams for access control. | Shoko Imaizumi, Osamu Watanabe, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2005 | ISCAS | Quantization-based image steganography without data hiding position memorization. | Yusuke Seki, Hiroyuki Kobayashi, Masaaki Fujiyoshi, Hitoshi Kiya |
| 2005 | ISCAS | A scalable encryption method allowing backward compatibility with JPEG2000 images. | Osamu Watanabe, Akiko Nakazaki, Hitoshi Kiya |
| 2004 | ICIP | An image-quality guaranteed method for quantization-based watermarking using a dwt. | Masaaki Fujiyoshi, Hitoshi Kiya |
| 2004 | ICIP | Efficient packet loss protection for JPEG2000 images enabling backward compatibility with a standard decoder. | Khairul Munadi, Masayuki Kurosaki, Kiyoshi Nishikawa, Hitoshi Kiya |
| 2004 | ICIP | A fast image-scramble method using public-key encryption allowing backward compatibility with jpeg2000. | Osamu Watanabe, Akiko Nakazaki, Hitoshi Kiya |
| 2003 | ICIP | Partial-scrambling of images encoded using JPEG2000 without generating marker codes. | Hitoshi Kiya, Shoko Imaizumi, Osamu Watanabe |
| 2003 | ICIP | Error correction using data hiding technique for JPEG2000 images. | Masayuki Kurosaki, Khairul Munadi, Hitoshi Kiya |
| 2003 | ISCAS | Error protection for JPEG2000 encoded images and its evaluation over OFDM channel. | Khairul Munadi, Masayuki Kurosaki, Kiyoshi Nishikawa, Hitoshi Kiya |
| 2003 | ISCAS | ROI-based scalability for progressive transmission in JPEG2000 coding. | Osamu Watanabe, Hitoshi Kiya |
| 2001 | ISCAS | Low-bit motion estimation with edge enhanced images for lowpower MPEG encoder. | Ayuko Takagi, Kiyoshi Nishikawa, Hitoshi Kiya |
| 2000 | ICASSP | Fast implementation technique for improving throughput of RLS adaptive filters. | Kiyoshi Nishikawa, Hitoshi Kiya |
| 2000 | ICIP | A Method of Extracting Embedded Binary Data from JPEG Bitstreams Using Standard JPEG Decoder. | Yoshihiro Noguchi, Hiroyuki Kobayashi, Hitoshi Kiya |
| 2000 | ICIP | Motion Estimation With Power Scalability and its VHDL Model. | Ayuko Takagi, Shogo Muramatsu, Hitoshi Kiya |
| 1999 | ICIP | A Method of Inserting Binary Data Into Mpeg Bitstreams for Video Index Labeling. | Hitoshi Kiya, Yoshihiro Noguchi, Ayuko Takagi, Hiroyuki Kobayashi |
| 1999 | ICIP | A Fast Full Search Block Matching Algorithm for Mpeg-4 Video. | Yoshihiro Noguchi, Jun Furukawa, Hitoshi Kiya |
| 1999 | ISCAS | A method of inserting binary data into MPEG bitstreams. | Hitoshi Kiya, Yoshihiro Noguchi, Ayuko Takagi, Hiroyuki Kobayashi |
| 1997 | ICASSP | A new pipelined architecture of the LMS algorithm without degradation of convergence characteristics. | Katsushige Matsubara, Kiyoshi Nishikawa, Hitoshi Kiya |
| 1995 | ICASSP | Improvement of convergence speed for subband adaptive digital filters using the multirate repeating method. | Koji Ashihara, Kiyoshi Nishikawa, Hitoshi Kiya |
| 1995 | ISCAS | Multidimensional Parallel Processing Methods for Rational Sampling Lattice Alteration. | Shogo Muramatsu, Hitoshi Kiya |
| 1994 | ICASSP | An LS based new gradient type adaptive algorithm-least squares gradient. | Kiyoshi Nishikawa, Hitoshi Kiya |
| 1994 | ICASSP | Performance analysis of subband adaptive systems using an equivalent model. | Yoshihiro Ono, Hitoshi Kiya |
| 1994 | ISCAS | An Extended Overlap-Add Method and -Save Method for Sampling Rate Conversion. | Shogo Muramatsu, Hitoshi Kiya |
| 1994 | ISCAS | A Technique to Improve Convergence Speed of the LMS Algorithm. | Kiyoshi Nishikawa, Hitoshi Kiya |
| 1993 | ICASSP | A parallel AR spectral estimation using a new class of filter bank. | Kiyoshi Nishikawa, Kyoko Miyazaki, Hitoshi Kiya |
| 1992 | ICASSP | FSF (frequency sampling filter) bank for adaptive system identification. | Hitoshi Kiya, Satoshi Yamaguchi |
| 1992 | ICASSP | Property of circular convolution for subband image coding. | Kiyoshi Nishikawa, Hitoshi Kiya, Masahiko Sagawa |