Koji Kotani

84 papers A 7B 1C 2Journal 40Unranked 34
YearRankTypeTitle / Venue / Authors
2021 J jnl
NAEM: Noisy Attention Exploration Module for Deep Reinforcement Learning.
IEEE Access
Zhenwen Cai, Feifei Lee, Chunyan Hu, Koji Kotani, Qiu Chen
2020 J jnl
Pedestrian as Points: An Improved Anchor-Free Method for Center-Based Pedestrian Detection.
IEEE Access
Jiawei Cai, Feifei Lee, Shuai Yang, Chaowei Lin, Hanqing Chen, Koji Kotani, Qiu Chen
2020 J jnl
Photovoltaic-assisted self-
IEICE Electron. Express
Ren Usami, Takao Komiyama, Yasunori Chonan, Hiroyuki Yamaguchi, Koji Kotani
2020 J jnl
RS-CapsNet: An Advanced Capsule Network.
IEEE Access
Shuai Yang, Feifei Lee, Ran Miao, Jiawei Cai, Lu Chen, Wei Yao, Koji Kotani, Qiu Chen
2020 J jnl
Scene recognition: A comprehensive survey.
Pattern Recognit.
Lin Xie, Feifei Lee, Li Liu, Koji Kotani, Qiu Chen
2019 C conf
RF Rectifier Absolute Figure of Merit Based on Relative Comparison with Reference Rectifier.
ISCAS
Koji Kotani, Shota Inoue, Takao Komiyama, Yasunori Chonan, Hiroyuki Yamaguchi
2018 — conf
Photovoltaic-Assisted Self-Vth-Cancellation CMOS RF Rectifier for Wide Power Range Operation.
A-SSCC
Ren Usami, Takao Komiyama, Yasunori Chonan, Hiroyuki Yamaguchi, Koji Kotani
2017 — conf
Improved multiple histogram-based features for robust face recognition.
CISP-BMEI
Qiu Chen, Feifei Lee, Koji Kotani
2017 — conf
Video copy detection using histogram based spatio-temporal features.
CISP-BMEI
Feifei Lee, Junjie Zhao, Koji Kotani, Qiu Chen
2016 — conf
Face Recognition Using Multiple Histogram Features in Spatial and Frequency Domains.
SITIS
Qiu Chen, Koji Kotani, Feifei Lee
2015 J jnl
Efficiency Improvement in Photovoltaic-Assisted CMOS Rectifier with Symmetric and Voltage-Boost PV-Cells.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Koji Kotani
2014 J jnl
A Photovoltaic-Assisted CMOS Rectifier for Synergistic Energy Harvesting from Ambient Radio Waves.
IEICE Trans. Electron.
Koji Kotani, Takumi Bando, Yuki Sasaki
2014 — conf
Face Recognition Using Markov Stationary Features and Vector Quantization Histogram.
CSE
Qiu Chen, Koji Kotani, Feifei Lee, Tadahiro Ohmi
2013 — conf
Highly efficient CMOS rectifier assisted by symmetric and voltage-boost PV-cell structures for synergistic ambient energy harvesting.
CICC
Koji Kotani
2011 — conf
A Robust Face Recognition Algorithm Using Markov Stationary Features and Adjacent Pixel Intensity Difference Quantization Histogram.
SITIS
Feifei Lee, Koji Kotani, Qiu Chen, Tadahiro Ohmi
2011 — conf
An Improved Face Recognition Algorithm Using Quantized DCT Coefficients.
SITIS
Qiu Chen, Koji Kotani, Feifei Lee, Tadahiro Ohmi
2010 J jnl
A Codebook Design Method for Robust VQ-Based Face Recognition Algorithm.
J. Softw. Eng. Appl.
Qiu Chen, Koji Kotani, Feifei Lee, Tadahiro Ohmi
2010 — conf
A WiMAX turbo decoder with tailbiting BIP architecture.
ASP-DAC
Hiroaki Arai, Naoto Miyamoto, Koji Kotani, Hisanori Fujisawa, Takashi Ito
2010 — conf
Fast and efficient search for MPEG-4 video using adjacent pixel intensity difference quantization histogram feature.
ICDIP
Feifei Lee, Koji Kotani, Qiu Chen, Tadahiro Ohmi
2010 — conf
Feature facial image recognition using VQ histogram in the DCT domain.
ICDIP
Qiu Chen, Koji Kotani, Feifei Lee, Tadahiro Ohmi
2010 J jnl
Highly Reliable and Drivability-Enhanced MOS Transistors with Rounded Nanograting Channels.
IEICE Trans. Electron.
Takashi Ito, Xiaoli Zhu, Shin-Ichiro Kuroki, Koji Kotani
2009 J jnl
High-Efficiency Differential-Drive CMOS Rectifier for UHF RFIDs.
IEEE J. Solid State Circuits
Koji Kotani, Atsushi Sasaki, Takashi Ito
2009 J jnl
Self-Vth-Cancellation High-Efficiency CMOS Rectifier Circuit for UHF RFIDs.
IEICE Trans. Electron.
Koji Kotani, Takashi Ito
2008 — conf
Fast Search Algorithm for Short Video Clips from Large Video Database Using a Novel Histogram Feature.
CIMCA/IAWTIC/ISE
Feifei Lee, Koji Kotani, Qiu Chen, Tadahiro Ohmi
2008 A conf
Fast search method for vector quantization by simultaneously using two subvectors.
ICME
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2008 — conf
Scale-Invariant Feature Extraction by VQ-Based Local Image Descriptor.
CIMCA/IAWTIC/ISE
Qiu Chen, Koji Kotani, Feifei Lee, Tadahiro Ohmi
2008 J jnl
Shot change detection using a novel histogram feature in compressed video.
IEICE Electron. Express
Feifei Lee, Koji Kotani, Qiu Chen, Tadahiro Ohmi
2007 J jnl
Characteristics of Nano-Grating N-Channel MOSFETs for Improved Current Drivability.
IEICE Trans. Electron.
Xiaoli Zhu, Shin-Ichiro Kuroki, Koji Kotani, Hideharu Shido, Masatoshi Fukuda, Yasuyoshi Mishima, Takashi Ito
2007 — conf
Fast Encoding Method of Vector Quantization Based on Optimal Subvector Partition.
DSP
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2007 — conf
Improved fast encoding method of vector quantization based on dynamic element reordering for codewords.
ECCTD
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2007 — conf
Improving Execution Speed of FPGA using Dynamically Reconfigurable Technique.
ASP-DAC
Roel Pantonial, Md. Ashfaquzzaman Khan, Naoto Miyamoto, Koji Kotani, Shigetoshi Sugawa, Tadahiro Ohmi
2006 J jnl
An Efficient Method of Constructing L
Intell. Autom. Soft Comput.
Zhibin Pan, Tadahiro Ohmi, Koji Kotani
2006 J jnl
Comments on: Novel full-search schemes for speeding up image coding using vector quantization.
J. Vis. Commun. Image Represent.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2006 — conf
Constructing Better Partial Sums Based on Energy-Maximum Criterion for Fast Encoding of VQ.
APCCAS
Zhibin Pan, Tadahiro Ohmi, Koji Kotani
2006 C conf
Fast encoding method for vector quantization based on sorting elements of codewords to adaptively constructing subvectors.
ISCAS
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2006 J jnl
Image Scrambling Method for Information Distribution Via Vector Quantization Codebook Processing.
Intell. Autom. Soft Comput.
Takahiro Nakayama, Koji Takeuchi, Masahiro Konda, Koji Kotani, Tadahiro Ohmi
2006 J jnl
Improved the-law-of-cosines-based fast search method for vector quantization by updating angular information.
Pattern Recognit. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2006 J jnl
Post-Processing Method for Vector Quantization to Achieve a Higher PSNR and Nearly Constant Bit Rate.
Intell. Autom. Soft Comput.
Zhibin Pan, Tadahiro Ohmi, Koji Kotani
2006 J jnl
Region-Division Vector Quantization Histogram Method for Human Face Recognition.
Intell. Autom. Soft Comput.
Koji Kotani, Qiu Chen, Feifei Lee, Tadahiro Ohmi
2006 J jnl
Still Image Compression with Mean-Residual Domain Adaptive Resolution Vector Quantization Technique.
Intell. Autom. Soft Comput.
Takahiro Nakayama, Masahiro Konda, Koji Takeuchi, Koji Kotani, Tadahiro Ohmi
2005 J jnl
A 3.7×3.7mm
J. Robotics Mechatronics
Naoto Miyamoto, Koji Kotani, Tadahiro Ohmi
2005 J jnl
A generalized multiple projection axes method for fast encoding of vector quantization.
Pattern Recognit. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 — conf
Enhanced fast encoding method for vector quantization by finding an optimally-ordered Walsh transform kernel.
ICIP (1)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 — conf
Fast Encoding Method for Vector Quantization Based on a New Mixed Pyramid Data Structure.
ICASSP (2)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 A conf
Fast Search Method for Image Vector Quantization Based on Equal-Average Equal-Variance and Partial Sum Concept.
ICME
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 — conf
Fast encoding method for image vector quantization by using partial sum concept in Walsh domain.
EUSIPCO
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 J jnl
Fast encoding method for vector quantization using modified L
IEEE Signal Process. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 — conf
Improved fast encoding method for vector quantization based on subvector technique.
ISCAS (6)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 J jnl
Performance Comparison between Equal-Average Equal-Variance Equal-Norm Nearest Neighbor Search (EEENNS) Method and Improved Equal-Average Equal-Variance Nearest Neighbor Search (IEENNS) Method for Fast Encoding of Vector Quantization.
IEICE Trans. Inf. Syst.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2005 J jnl
Recursive computation method for fast encoding of vector quantization based on 2-pixel-merging sum pyramid data structure.
Pattern Recognit. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 A conf
A Dynamically-Reconfigurable Image Recognition Processor.
IPDPS
Kazuyuki Maruo, Masayoshi Ichikawa, Naoto Miyamoto, Leo Karnan, Takahiro J. Yamaguchi, Koji Kotani, Tadahiro Ohmi
2004 J jnl
A Fast Encoding Method for Vector Quantization by using Multi Euclidean Distance Estimations.
Intell. Autom. Soft Comput.
Zhibin Pan, Tadahiro Ohmi, Koji Kotani
2004 — conf
A fast search method for vector quantization using 2-pixel-merging sum pyramid in recursive way.
EUSIPCO
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 — conf
A memory-efficient fast encoding method for vector quantization using 2-pixel-merging sum pyramid.
ICASSP (3)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 — conf
A small-area high-performance 512-point 2-dimensional FFT single-chip processor.
ASP-DAC
Naoto Miyamoto, Leo Karnan, Kazuyuki Maruo, Koji Kotani, Tadahiro Ohmi
2004 J jnl
A unified projection method for fast search of vector quantization.
IEEE Signal Process. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 J jnl
An Improved Fast Encoding Algorithm for Vector Quantization Using 2-Pixel-Merging Sum Pyramid and Manhattan-Distance-First Check.
IEICE Trans. Inf. Syst.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 — conf
An approach to realize time-sharing of flip-flops in time-multiplexed FPGAs.
FPT
Md. Ashfaquzzaman Khan, Naoto Miyamoto, Takeshi Ohkawa, Amir Jamak, Soichiro Kita, Koji Kotani, Tadahiro Ohmi
2004 — conf
An image recognition processor using dynamically reconfigurable ALU.
CICC
Naoto Miyamoto, Koji Kotani, Kazuyuki Maruo, Tadahiro Ohmi
2004 J jnl
An improved fast encoding algorithm for vector quantization using 2-pixel-merging sum pyramid data structure.
Pattern Recognit. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 A conf
An improved fast encoding method for vector quantization based on memory-efficient data structure.
ICME
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 J jnl
An improved full-search-equivalent vector quantization method using the law of cosines.
IEEE Signal Process. Lett.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 J jnl
Face Recognition Algorithm using Vector Quantization Codebook Space Information Processing.
Intell. Autom. Soft Comput.
Tadahiro Ohmi, Koji Kotani, Qiu Chen, Feifei Lee
2004 B conf
Improved fast search method for vector quantization using discrete walsh transform.
ICIP
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2004 J jnl
Practical charge-transfer amplifier design architectures for low-power flash A/D converters.
IEEE Trans. Circuits Syst. I Regul. Pap.
William J. Marble, Koji Kotani, Craig S. Petrie
2004 J jnl
Robust Face Detection Combined Skin Color Features, Template Matching and VQ Histogram Method in Practical Environments.
Intell. Autom. Soft Comput.
Qiu Chen, Koji Kotani, Yoshiyuki Taniguchi, Zhibin Pan, Tadahiro Ohmi
2004 J jnl
Still Image Compression with Adaptive Resolution Vector Quantization Technique.
Intell. Autom. Soft Comput.
Takahiro Nakayama, Masahiro Konda, Koji Takeuchi, Koji Kotani, Tadahiro Ohmi
2004 — conf
The flexible processor an approach for single-chip hardware emulation by dynamic reconfiguration.
ASP-DAC
Takeshi Ohkawa, Toshiyuki Nozawa, Masanori Fujibayashi, Naoto Miyamoto, Leo Karnan, Soichiro Kita, Koji Kotani, Tadahiro Ohmi
2003 J jnl
A Fast Encoding Method for Vector Quantization Based on 2-Pixel-Merging Sum Pyramid Data Structure.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2003 A conf
A fast full search equivalent encoding method for vector quantization by using appropriate features.
ICME
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2003 — conf
A post-processing method for vector quantization to achieve higher PSNR and nearly constant bit rate.
ISCAS (2)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2003 — conf
A small-area high performance 512-point 2-dimensional FFT single-chip processor.
ESSCIRC
Naoto Miyamoto, Leo Karnan, Kazuyuki Maruo, Koji Kotani, Tadahiro Ohmi
2003 — conf
A still image encoder based on adaptive resolution vector quantization employing needless calculation elimination architecture.
ASP-DAC
Masanori Fujibayashi, Toshiyuki Nozawa, Takahiro Nakayama, Kenji Mochizuki, Koji Kotani, Shigetoshi Sugawa, Tadahiro Ohmi
2003 J jnl
A still-image encoder based on adaptive resolution vector quantization featuring needless calculation elimination architecture.
IEEE J. Solid State Circuits
Masanori Fujibayashi, Toshiyuki Nozawa, Takahiro Nakayama, Kenji Mochizuki, Masahiro Konda, Koji Kotani, Shigetoshi Sugawa, Tadahiro Ohmi
2003 A conf
Adaptive resolution vector quantization technique and basic codebook design method for compound image compression.
ICME
Takahiro Nakayama, Masahiro Konda, Koji Takeuchi, Koji Kotani, Tadahiro Ohmi
2003 — conf
Still image compression method based on adaptive block segmentation vector quantization technique.
ICIP (2)
Takahiro Nakayama, Koji Takeuchi, Masahiro Konda, Koji Kotani, Tadahiro Ohmi
2002 — conf
A hierarchical fast encoding algorithm for vector quantization with PSNR equivalent to full search.
ISCAS (1)
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2002 — conf
Face recognition using vector quantization histogram method.
ICIP (2)
Koji Kotani, Feifei Lee, Qiu Chen, Tadahiro Ohmi
2001 J jnl
New paradigm of silicon technology.
Proc. IEEE
Tadahiro Ohmi, Shigetoshi Sugawa, Koji Kotani, Masaki Hirayama, Akihiro Morimoto
2000 A conf
A fast search method of speaker identification for large population using pre-selection and hierarchical matching.
INTERSPEECH
Zhibin Pan, Koji Kotani, Tadahiro Ohmi
2000 J jnl
A parallel vector-quantization processor eliminating redundant calculations for real-time motion picture compression.
IEEE J. Solid State Circuits
Toshiyuki Nozawa, Masahiro Konda, Masanori Fujibayashi, Makoto Imai, Koji Kotani, Shigetoshi Sugawa, Tadahiro Ohmi
1999 J jnl
Association hardware for intelligent electronic systems.
Syst. Comput. Jpn.
Tadahiro Ohmi, Tadashi Shibata, Koji Kotani, Tsutomu Nakai, Akira Nakada, Ning Mei Yu, Masahiro Konda, Tatsuo Morimoto, Yuichiro Yamashita
1998 J jnl
CMOS charge-transfer preamplifier for offset-fluctuation cancellation in low-power A/D converters.
IEEE J. Solid State Circuits
Koji Kotani, Tadashi Shibata, Tadahiro Ohmi
1993 — conf
Implementing Intelligence on Silicon Using Neuron-Like Functional MOS Transistors.
NIPS
Tadashi Shibata, Koji Kotani, Takeo Yamashita, Hiroshi Ishii, Hideo Kosaka, Tadahiro Ohmi