Property of circular convolution for subband image coding. - Kiyoshi Nishikawa; Hitoshi Kiya; Masahiko Sagawa (ICASSP, 1992)

A parallel AR spectral estimation using a new class of filter bank. - Kiyoshi Nishikawa; Kyoko Miyazaki; Hitoshi Kiya (ICASSP (4), 1993)

An LS based new gradient type adaptive algorithm-least squares gradient. - Kiyoshi Nishikawa; Hitoshi Kiya (ICASSP (3), 1994)

A Technique to Improve Convergence Speed of the LMS Algorithm. - Kiyoshi Nishikawa; Hitoshi Kiya (ISCAS, 1994)

A development of symmetric extension method for subband image coding. - Hitoshi Kiya; Kiyoshi Nishikawa; Masahiro Iwahashi (IEEE Trans. Image Process., 1994)

Improvement of convergence speed for subband adaptive digital filters using the multirate repeating method. - Koji Ashihara; Kiyoshi Nishikawa; Hitoshi Kiya (ICASSP, 1995)

A super-resolution method based on the discrete cosine transforms. - Hisashi Sakane; Kiyoshi Nishikawa; Hitoshi Kiya (EUSIPCO, 1996)

A new pipelined architecture of the LMS algorithm without degradation of convergence characteristics. - Katsushige Matsubara; Kiyoshi Nishikawa; Hitoshi Kiya (ICASSP, 1997)

A pipelined architecture for DLMS algorithm considering both hardware complexity and output latency. - Tadaaki Kimijima; Kiyoshi Nishikawa; Hitoshi Kiya (EUSIPCO, 1998)

Conditions for convergence of a delayless subband adaptive filter and its efficient implementation. - Kiyoshi Nishikawa; Hitoshi Kiya (IEEE Trans. Signal Process., 1998)

Novel implementation technique of RLS algorithm for improving throughput of adaptive filters. - Kiyoshi Nishikawa; Hitoshi Kiya (EUSIPCO, 2000)

Fast implementation technique for improving throughput of RLS adaptive filters. - Kiyoshi Nishikawa; Hitoshi Kiya (ICASSP, 2000)

Low-bit motion estimation with edge enhanced images for lowpower MPEG encoder. - Ayuko Takagi; Kiyoshi Nishikawa; Hitoshi Kiya (ISCAS (2), 2001)

Multirate Repeating Method for Alias Free Subband Adaptive Filters. - Kiyoshi Nishikawa; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

Error protection for JPEG2000 encoded images and its evaluation over OFDM channel. - Khairul Munadi; Masayuki Kurosaki; Kiyoshi Nishikawa; Hitoshi Kiya (ISCAS (2), 2003)

Error Protection for JPEG2000-Coded Images and Its Evaluation over OFDM Channel. - Khairul Munadi; Masayuki Kurosaki; Kiyoshi Nishikawa; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Efficient packet loss protection for JPEG2000 images enabling backward compatibility with a standard decoder. - Khairul Munadi; Masayuki Kurosaki; Kiyoshi Nishikawa; Hitoshi Kiya (ICIP, 2004)

Evaluation of vibration in many positions by SOM. - Nobuaki Kamimoto; Yutaka Yamada; Masami Kitamura; Kiyoshi Nishikawa (Artif. Life Robotics, 2005)

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

QoS Estimation Method for JPEG 2000 Coded Image at RTP Layer. - Kiyoshi Nishikawa; Shinichi Nagawara; Hitoshi Kiya (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

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)

No-Reference PSNR Estimation for Quality Monitoring of Motion JPEG2000 Video Over Lossy Packet Networks. - Kiyoshi Nishikawa; Khairul Munadi; Hitoshi Kiya (IEEE Trans. Multim., 2008)

SaaS Application Framework Using Information Gateway Enabling Cloud Service with Data Confidentiality. - Kiyoshi Nishikawa; Kenji Oki; Akihiko Matsuo (APSEC, 2012)

Mixture structure of kernel adaptive filters for improving the convergence characteristics. - Kiyoshi Nishikawa; Hiroya Nakazato (APSIPA, 2012)

Fixed order implementation of kernel RLS-DCD adaptive filters. - Kiyoshi Nishikawa; Yoshiki Ogawa; Felix Albu (APSIPA, 2013)

The kernel proportionate NLMS algorithm. - Felix Albu; Kiyoshi Nishikawa (EUSIPCO, 2013)

An efficient implementation of the kernel affine projection algorithm. - Felix Albu; Dinu Coltuc; Marius Rotaru; Kiyoshi Nishikawa (ISPA, 2013)

Consideration on the performance of kernel adaptive filters for the mixture of linear and non-linear environments. - Kiyoshi Nishikawa; Felix Albu (APSIPA, 2014)

New iterative kernel algorithms for nonlinear acoustic echo cancellation. - Felix Albu; Kiyoshi Nishikawa (APSIPA, 2015)

Implementation method of kernel adaptive filter as an add-on for a linear adaptive filter. - Kiyoshi Nishikawa; Felix Albu (EUSIPCO, 2015)

Consideration on performance improvement of shadow and reflection removal based on GMM. - Kiyoshi Nishikawa; Yoshihiro Yamashita; Toru Yamaguchi; Takao Nishitani (APSIPA, 2016)

Application of mean-shift clustering for removing flux trapping noise from geomagnetic field signals measured using HTS-SQUID magnetometers. - Kiyoshi Nishikawa; Kan Okubo; Yuta Katori; Nobunao Takeuchi (APSIPA, 2017)

Retinex Foreground Segmentation for Low Light Environments. - Yuuki Tanaka; Yoshihiro Yamashita; Kiyoshi Nishikawa; Toru Yamaguchi; Takao Nishitani (APSIPA, 2018)

Consideration on application of the concept of Saak transform to convolutional neural networks. - Tomonori Maeda; Kiyoshi Nishikawa (APSIPA, 2019)

Low Variance Adaptation Method for the LMS-Type Adaptive Filters Based on the Gaussian Model. - Kiyoshi Nishikawa (ISCAS, 2019)

Low Complexity Implementation Method for the Adaptive Filters based on the Gaussian Model. - Kai Yokoyama; Kiyoshi Nishikawa (APSIPA, 2020)

The LMS-Type Adaptive Filter Based on the Gaussian Model for Controlling the Variances of Coefficients. - Kiyoshi Nishikawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

On Improving the Accuracy of Object Detection for High Resolution Images Based on SSD. - Kei Irie; Yicheng Qiu; Kiyoshi Nishikawa (APSIPA ASC, 2021)

Detection model of sister chromatid cohesion defects based on Vision Transformer. - Shinya Matsumoto; Kan Okubo; Takuya Abe; Kiyoshi Nishikawa (APSIPA ASC, 2023)

YOLO for High Resolution Images without Retraining. - Daisuke Minami; Kiyoshi Nishikawa (APSIPA, 2024)

Privacy-Preserving Vision Transformer Using Images Encrypted with Restricted Random Permutation Matrices. - Kouki Horio; Kiyoshi Nishikawa; Hitoshi Kiya (GCCE, 2024)

Automatic Classification of Human Chromosome Shapes using Convolutional Neural Network Models. - Shinya Matsumoto; Daiki Ikemoto; Takuya Abe; Kan Okubo; Kiyoshi Nishikawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2025)

A Privacy-Preserving Semantic-Segmentation Method Using Domain-Adaptation Technique. - Homare Sueyoshi; Kiyoshi Nishikawa; Hitoshi Kiya (CoRR, 2025)