A Data Embedding Method Considering the Finite Word-Length for High Quality Images. - Masaaki Fujiyoshi; Takashi Tachibana; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

An image-quality guaranteed method for quantization-based watermarking using a dwt. - Masaaki Fujiyoshi; Hitoshi Kiya (ICIP, 2004)

Modulo arithmetic-based image watermarking and its theoretical analysis of image-quality. - Masaaki Fujiyoshi; Yusuke Seki; Hiroyuki Kobayashi; Hitoshi Kiya (ICIP (1), 2005)

Generalized hierarchical encryption of JPEG 2000 codestreams for access control. - Shoko Imaizumi; Osamu Watanabe 002; Masaaki Fujiyoshi; Hitoshi Kiya (ICIP (2), 2005)

Quantization-based image steganography without data hiding position memorization. - Yusuke Seki; Hiroyuki Kobayashi; Masaaki Fujiyoshi; Hitoshi Kiya (ISCAS (5), 2005)

A Method of Guaranteeing Image-Quality for Quantization-Based Watermarking Using a Nonorthogonal Transformation. - Masaaki Fujiyoshi; Osamu Watanabe 002; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

DCT Sign Only Correlation and Its Application to Image Registration. - Fitri Arnia; Ikue Iizuka; Hiroyuki Kobayashi; Masaaki Fujiyoshi; Hitoshi Kiya (APCCAS, 2006)

Codeblock-Based Concealment Scheme for JPEG2000 Images in Lossy Packet Networks. - Khairul Munadi; Masaaki Fujiyoshi; Kiyoshi Nishikawa; Hitoshi Kiya (APCCAS, 2006)

Fast and Robust Identification Methods for JPEG Images with Various Compression Ratios. - Fitri Arnia; Ikue Iizuka; Masaaki Fujiyoshi; Hitoshi Kiya (ICASSP (2), 2006)

Hierarchical Encryption of Multimedia Contents for Access Control. - Masaaki Fujiyoshi; Wataru Saitou; Osamu Watanabe 002; Hitoshi Kiya (ICIP, 2006)

Fast Image Identification Methods for JPEG Images with Different Compression Ratios. - Fitri Arnia; Ikue Iizuka; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

A digital watermarking scheme that preserves image quality and is applicable to watermark sequences from a variety of distributions. - Takashi Tachibana; Masaaki Fujiyoshi; Hitoshi Kiya (Syst. Comput. Jpn., 2006)

Fast Method for Joint Retrieval and Identification of JPEG Coded Images Based on DCT Sign. - Fitri Arnia; Ikue Iizuka; Masaaki Fujiyoshi; Hitoshi Kiya (ICIP (2), 2007)

A Location-Map Free Reversible Data Hiding Method using Block-Based Single Parameter. - Masaaki Fujiyoshi; Shuji Sato; Hong Lin Jin; Hitoshi Kiya (ICIP (3), 2007)

Collusion Attack-Resilient Hierarchical Encryption of JPEG 2000 Codestreams with Scalable Access Control. - Shoko Imaizumi; Masaaki Fujiyoshi; Yoshito Abe; Hitoshi Kiya (ICIP (2), 2007)

Image Tamper Detection using Mathematical Morphology. - Mirei Kihara; Masaaki Fujiyoshi; Qing Tao Wan; Hitoshi Kiya (ICIP (6), 2007)

Codestream Domain Scrambling of Moving Objects Based on DCT Sign-only Correlation for Motion JPEG Movies. - Keijiro Kuroiwa; Masaaki Fujiyoshi; Hitoshi Kiya (ICIP (5), 2007)

DCT Sign-Based Similarity Measure for JPEG Image Retrieval. - Fitri Arnia; Ikue Iizuka; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Encryption of Composite Multimedia Contents for Access Control. - Masaaki Fujiyoshi; Shoko Imaizumi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Lossless Data Hiding in the Spatial Domain for High Quality Images. - Hong Lin Jin; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Codeblock-Based Error Concealment for JPEG2000 Coded Image Transmission over RTP. - Khairul Munadi; Masaaki Fujiyoshi; Kiyoshi Nishikawa; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

A location map-free visible and reversible watermarking method with authentication ability. - Seungwu Han; Masaaki Fujiyoshi; Hitoshi Kiya (APCCAS, 2008)

A scrambling method for Motion JPEG videos enabling moving objects detection from scrambled videos. - Masaaki Fujiyoshi; Keijiro Kuroiwa; Hitoshi Kiya (ICIP, 2008)

Hierarchical encryption using short encryption keys for scalable access control of JPEG 2000 coded images. - Noriaki Hashimoto; Shoko Imaizumi; Masaaki Fujiyoshi; Hitoshi Kiya (ICIP, 2008)

An Efficient Reversible Image Authentication Method. - Seungwu Han; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Reversible Information Hiding Considering Hierarchical Access Control. - Masaaki Fujiyoshi; Seungwu Han; Hitoshi Kiya (IAS, 2009)

Efficient Collusion Attack-free Access Control for Multidimensionally Hierarchical Scalability Content. - Shoko Imaizumi; Masaaki Fujiyoshi; Hitoshi Kiya (ISCAS, 2009)

A location map-free reversible data hiding method for specific area embedding. - Michihiko Ono; Seungwu Han; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Electron. Express, 2009)

A Reversible Image Authentication Method without Memorization of Hiding Parameters. - Seungwu Han; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

A Moving Object Detection Scheme in Codestream Domain for Motion JPEG Encoded Movies. - Masaaki Fujiyoshi; Yuji Tachizaki; Hitoshi Kiya (PCM (2), 2010)

A parameter memorization-free lossless data hiding method with flexible payload size. - Masaaki Fujiyoshi; Takahiro Tsuneyoshi; Hitoshi Kiya (IEICE Electron. Express, 2010)

An efficient access control method for composite multimedia content. - Shoko Imaizumi; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Electron. Express, 2010)

A leakage suppressed two-level security visual secret sharing scheme. - Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (ISPACS, 2011)

A Key Derivation Scheme for Hierarchical Access Control to JPEG 2000 Coded Images. - Shoko Imaizumi; Masaaki Fujiyoshi; Hitoshi Kiya; Naokazu Aoki; Hiroyuki Kobayashi (PSIVT (2), 2011)

Generalized histogram shifting-based reversible data hiding with an adaptive binary-to-q-ary converter. - Masaaki Fujiyoshi; Hitoshi Kiya (APSIPA, 2012)

A visually-lossless data hiding method based on histogram modification. - Masaaki Fujiyoshi; Hitoshi Kiya (ISCAS, 2012)

A Histogram shifting-based blind reversible data hiding method with a histogram peak estimator. - Masaaki Fujiyoshi (ISCIT, 2012)

Non-separable weighted median-cut quantization for images with sparse color histogram. - Wannida Sae-Tang; Mika Sugiyama; Masaaki Fujiyoshi; Hitoshi Kiya (ISPACS, 2012)

A blind lossless information embedding scheme based on generalized histogram shifting. - Masaaki Fujiyoshi (APSIPA, 2013)

A secure face recognition scheme using noisy images based on kernel sparse representation. - Masakazu Furukawa; Yuichi Muraki; Masaaki Fujiyoshi; Hitoshi Kiya (APSIPA, 2013)

A separable lossless data embedding scheme in encrypted images considering hierarchical privilege. - Masaaki Fujiyoshi (EUSIPCO, 2013)

Separable reversible data hiding in encrypted images with histogram permutation. - Masaaki Fujiyoshi (ICME Workshops, 2013)

Improved Iris matching technique using reduced sized of ordinal measure of DCT coefficients. - Fitri Arnia; Khairul Munadi; Roslidar; Masaaki Fujiyoshi; Hitoshi Kiya (ISCE, 2013)

A dual permutation-based separable reversible information hiding scheme in encrypted images. - Masaaki Fujiyoshi (ISCE, 2013)

Secure online image trading scheme using DCT coefficients and moment invariants feature. - Khairul Munadi; Mohd. Syaryadhi; Fitri Arnia; Masaaki Fujiyoshi; Hitoshi Kiya (ISCE, 2013)

A new color QR code forward compatible with the standard QR code decoder. - Masanori Kikuchi; Masaaki Fujiyoshi; Hitoshi Kiya (ISPACS, 2013)

An image trading system with JPEG 2000 using fingerprinting in visually protected domain. - Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (ISPACS, 2013)

Generalized Histogram Shifting-Based Blind Reversible Data Hiding with Balanced and Guarded Double Side Modification. - Masaaki Fujiyoshi (IWDW, 2013)

A Cheat-Prevention Visual Secret Sharing Scheme with Minimum Pixel Expansion. - Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (IWDW, 2013)

An Image Trading System Using Amplitude-Only Images for Privacy- and Copyright-Protection. - Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

A Cheat-Prevention Visual Secret Sharing Scheme with Efficient Pixel Expansion. - Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

A Generation Method of Amplitude-Only Images with Low Intensity Ranges. - Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

A compressible template protection scheme for face recognition based on sparse representation. - Yuichi Muraki; Masakazu Furukawa; Masaaki Fujiyoshi; Yoshihide Tonomura; Hitoshi Kiya (EUSIPCO, 2014)

A cheat preventing method with efficient pixel expansion for Naor-Shamir's visual cryptography. - Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (ICIP, 2014)

Effects of Random Sign Encryption in JPEG 2000-Based Data Hiding. - Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (IIH-MSP, 2014)

A near-lossless data hiding method with an improved quantizer. - Masaaki Fujiyoshi (ISCAS, 2014)

Efficient data hiding in encrypted JPEG 2000 codestreams. - Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (ISPACS, 2014)

Image invisibility assessment for visually encrypted images. - Akira Uchida; Masaaki Fujiyoshi; Sayaka Shiota; Hitoshi Kiya (ISPACS, 2014)

An Efficient Compression of Amplitude-Only Images for the Image Trading System. - Shenchuan Liu; Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Inf. Syst., 2014)

An Efficient Lossless Compression Method Using Histogram Packing for HDR Images in OpenEXR Format. - Taku Odaka; Wannida Sae-Tang; Masaaki Fujiyoshi; Hiroyuki Kobayashi; Masahiro Iwahashi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

A Copyright- and Privacy-Protected Image Trading System Using Fingerprinting in Discrete Wavelet Domain with JPEG 2000. - Wannida Sae-Tang; Shenchuan Liu; Masaaki Fujiyoshi; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

A near-lossless image compression system with data hiding capability. - Masaaki Fujiyoshi; Hitoshi Kiya (APSIPA, 2015)

Histogram-Based Near-Lossless Data Hiding and Its Application to Image Compression. - Masaaki Fujiyoshi; Hitoshi Kiya (PCM (2), 2015)

Encryption-then-Compression-Based Copyright- and Privacy-Protected Image Trading System. - Wannida Sae-Tang; Masaaki Fujiyoshi; Hitoshi Kiya (ICAIP, 2017)

A Blind Reversible Data Hiding Method for High Dynamic Range Images Taking Advantage of Sparse Histogram. - Masaaki Fujiyoshi; Hitoshi Kiya (IWDW, 2017)

Supporting Creation of FAQ Dataset for E-Learning Chatbot. - Yasunobu Sumikawa; Masaaki Fujiyoshi; Hisashi Hatakeyama; Masahiro Nagai (KES-IDT (1), 2019)

A Scheme of Reversible Data Hiding for the Encryption-Then-Compression System. - Masaaki Fujiyoshi; Ruifeng Li; Hitoshi Kiya (IEICE Trans. Inf. Syst., 2021)

A Novel Reversible Data Hiding Scheme in Compressible Encrypted Grayscale-Based Images. - Ruifeng Li; Masaaki Fujiyoshi (VCIP, 2024)