Atsushi Shimizu

58 papers A* 1A 1B 10C 14Misc 1Journal 17Unranked 14
YearRankTypeTitle / Venue / Authors
2026 — conf
Position Encoding with Random Float Sampling Enhances Length Generalization of Transformers.
EACL (Findings)
Atsushi Shimizu, Shohei Taniguchi, Yutaka Matsuo
2026 J jnl
Position Encoding with Random Float Sampling Enhances Length Generalization of Transformers.
CoRR
Atsushi Shimizu, Shohei Taniguchi, Yutaka Matsuo
2024 A* conf
Improved Active Learning via Dependent Leverage Score Sampling.
ICLR
Atsushi Shimizu, Xiaoou Cheng, Christopher Musco, Jonathan Weare
2023 J jnl
Improved Active Learning via Dependent Leverage Score Sampling.
CoRR
Atsushi Shimizu, Xiaoou Cheng, Christopher Musco, Jonathan Weare
2021 J jnl
Assessing CALIOP-Derived Planetary Boundary Layer Height Using Ground-Based Lidar.
Remote. Sens.
Man-Hae Kim, Huidong Yeo, Soojin Park, Do-Hyeon Park, Ali H. Omar, Tomoaki Nishizawa, Atsushi Shimizu, Sang-Woo Kim
2021 J jnl
jMorp updates in 2020: large enhancement of multi-omics data resources on the general Japanese population.
Nucleic Acids Res.
Shu Tadaka, Eiji Hishinuma, Shohei Komaki, Ikuko N. Motoike, Junko Kawashima, Daisuke Saigusa, Jin Inoue, Jun Takayama, Yasunobu Okamura, Yuichi Aoki, Matsuyuki Shirota, Akihito Otsuki, Fumiki Katsuoka, Atsushi Shimizu, Gen Tamiya, Seizo Koshiba, Makoto Sasaki, Masayuki Yamamoto, Kengo Kinoshita
2019 C conf
A Low Power Motion Estimation Engine with Adaptive Bit-Shifted SAD Calculation.
ISCAS
Takayuki Onishi, Yuya Omori, Ken Nakamura, Hiroe Iwasaki, Atsushi Shimizu
2019 B conf
Complexity Reduction of Multi-Level DP Quantization Through Inter-Level Redundancy Elimination.
ICIP
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2019 C conf
GAN-based Image Compression Using Mutual Information Maximizing Regularization.
PCS
Shinobu Kudo, Shota Orihashi, Ryuichi Tanida, Atsushi Shimizu
2019 B conf
Image Pre-Transformation for Recognition-Aware Image Compression.
ICIP
Satoshi Suzuki, Motohiro Takagi, Kazuya Hayase, Takayuki Onishi, Atsushi Shimizu
2019 C conf
LF-TSP: Traveling salesman problem for HEVC-based light-field coding.
VCIP
Kota Imaeda, Kohei Isechi, Keita Takahashi, Toshiaki Fujii, Yukihiro Bandoh, Takehito Miyazawa, Seishi Takamura, Atsushi Shimizu
2019 — conf
Low Delay 4K 120fps HEVC Decoder with Parallel Processing Architecture.
COOL CHIPS
Ken Nakamura, Yuya Omori, Daisuke Kobayashi, Tatsuya Osawa, Takayuki Onishi, Koyo Nitta, Hiroe Iwasaki, Atsushi Shimizu
2019 J jnl
Sparse DP Quantization Algorithm.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2019 C conf
Water-Bottom Video Coding Based on Coding- Oriented Reference Frame Generation.
VCIP
Seishi Takamura, Atsushi Shimizu
2018 J jnl
A 120 fps High Frame Rate Real-time HEVC Video Encoder with Parallel Configuration Scalable to 4K.
IEEE Trans. Multi Scale Comput. Syst.
Yuya Omori, Takayuki Onishi, Hiroe Iwasaki, Atsushi Shimizu
2018 J jnl
A 4K/60p HEVC Real-Time Encoding System With High Quality HDR Color Representations.
IEEE Trans. Consumer Electron.
Daisuke Kobayashi, Ken Nakamura, Takayuki Onishi, Hiroe Iwasaki, Atsushi Shimizu
2018 J jnl
A Single-Chip 4K 60-fps 4: 2: 2 HEVC Video Encoder LSI Employing Efficient Motion Estimation and Mode Decision Framework With Scalability to 8K.
IEEE Trans. Very Large Scale Integr. Syst.
Takayuki Onishi, Takashi Sano, Yukikuni Nishida, Kazuya Yokohari, Ken Nakamura, Koyo Nitta, Kimiko Kawashima, Jun Okamoto, Naoki Ono, Atsushi Sagata, Hiroe Iwasaki, Mitsuo Ikeda, Atsushi Shimizu
2018 C conf
An HEVC real-time encoding system with high quality HDR color representations.
ICCE
Daisuke Kobayashi, Ken Nakamura, Takayuki Onishi, Yasuyuki Nakajima, Hiroe Iwasaki, Mitsuo Ikeda, Atsushi Shimizu
2018 Misc conf
Complexity Reduction Algorithm for Optimum Quantizer Design Based on Amplitude Sparseness.
ICASSP
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2018 B conf
Complexity Reduction for Optimal Entropy-Constrained Quantization.
DCC
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2018 J jnl
Optimal Design of Adaptive Intra Predictors Based on Sparsity Constraint.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yukihiro Bandoh, Yuichi Sayama, Seishi Takamura, Atsushi Shimizu
2018 B conf
Temporal Filter Design for Encoder-Oriented Video Generation Based on Bayesian Optimization.
ICIP
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2017 — conf
A 120 fps high frame rate real-time HEVC video encoder with parallel configuration scalable to 4K.
COOL Chips
Yuya Omori, Takayuki Onishi, Hiroe Iwasaki, Atsushi Shimizu
2017 J jnl
A Study on Video Generation Based on High-Density Temporal Sampling.
IEICE Trans. Inf. Syst.
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2017 — conf
Efficient video coding using rigid object tracking.
APSIPA
Seishi Takamura, Atsushi Shimizu
2016 C conf
Adaptive intra prediction algorithm based on extended LARS.
PCS
Yuichi Sayama, Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2016 B conf
Concurrent evolution of pixel predictor and context modeling for image coding.
ICIP
Seishi Takamura, Atsushi Shimizu
2016 C conf
Motion vector prediction methods considering prediction continuity in HEVC.
PCS
Shinobu Kudo, Masaki Kitahara, Atsushi Shimizu
2016 B conf
Simple and efficient H.265/HEVC coding of fixed camera videos.
ICIP
Seishi Takamura, Atsushi Shimizu
2016 B conf
Video generation algorithm based on high temporal-resolution imaging.
ICIP
Yukihiro Bandoh, Seishi Takamura, Atsushi Shimizu
2015 C conf
A highly parallel motion estimation method based on temporal motion vector prediction for a many-core platform.
PCS
Shinobu Kudo, Masaki Kitahara, Atsushi Shimizu
2015 — conf
Professional H.265/HEVC encoder LSI toward high-quality 4K/8K broadcast infrastructure.
Hot Chips Symposium
Hiroe Iwasaki, Takayuki Onishi, Ken Nakamura, Koyo Nitta, Takashi Sano, Yukikuni Nishida, Kazuya Yokohari, Jia Su, Naoki Ono, Ritsu Kusaba, Atsushi Sagata, Mitsuo Ikeda, Atsushi Shimizu
2015 — conf
Single-chip 4K 60fps 4: 2: 2 HEVC video encoder LSI with 8K scalability.
VLSIC
Takayuki Onishi, Takashi Sano, Yukikuni Nishida, Kazuya Yokohari, Jia Su, Ken Nakamura, Koyo Nitta, Kimiko Kawashima, Jun Okamoto, Naoki Ono, Ritsu Kusaba, Atsushi Sagata, Hiroe Iwasaki, Mitsuo Ikeda, Atsushi Shimizu
2014 — conf
GPGPU-assisted denoising filter generation for video coding.
GECCO (Companion)
Seishi Takamura, Atsushi Shimizu
2014 B conf
Image/video coding based on evolutive unidirectional transforms.
ICIP
Seishi Takamura, Atsushi Shimizu
2014 C conf
Optimized spatial and temporal resolution based on subjective quality estimation without encoding.
VCIP
Motohiro Takagi, Hiroshi Fujii, Atsushi Shimizu
2013 B conf
Image Coding Using Nonlinear Evolutionary Transforms.
DCC
Seishi Takamura, Atsushi Shimizu
2013 C conf
Intra angular prediction with weight function and modification filter.
PCS
Shohei Matsuo, Seishi Takamura, Atsushi Shimizu
2013 C conf
On intra coding using mode dependent 2D-KLT.
PCS
Seishi Takamura, Atsushi Shimizu
2013 B conf
Residue role assignment based transform partition predetermination on HEVC.
ICIP
Jia Su, Koyo Nitta, Mitsuo Ikeda, Atsushi Shimizu
2013 C conf
Subjective video quality estimation to determine optimal spatio-temporal resolution.
PCS
Motohiro Takagi, Hiroshi Fujii, Atsushi Shimizu, Yuichiro Urata, Kazuhisa Yamagishi
2012 J jnl
An H.264/AVC High422 Profile and MPEG-2 422 Profile Encoder LSI for HDTV Broadcasting Infrastructures.
IEICE Trans. Electron.
Koyo Nitta, Hiroe Iwasaki, Takayuki Onishi, Takashi Sano, Atsushi Sagata, Yasuyuki Nakajima, Minoru Inamori, Ryuichi Tanida, Atsushi Shimizu, Ken Nakamura, Mitsuo Ikeda, Jiro Naganuma
2012 — conf
Largest coding unit based framework for non-local means filter.
APSIPA
Masaaki Matsumura, Seishi Takamura, Atsushi Shimizu
2012 — conf
Modification of intra angular prediction in HEVC.
APSIPA
Shohei Matsuo, Seishi Takamura, Atsushi Shimizu
2011 C conf
AEROSOL classification retrieval algorithms for EarthCARE/ATLID, CALIPSO/CALIOP, and ground-based lidars.
IGARSS
Nobuo Sugimoto, Tomoaki Nishizawa, Atsushi Shimizu, Hajime Okamoto
2009 J jnl
The Implementation of a 2/4/8 Antennas Configurable Diversity OFDM Receiver for Mobile HDTV Application.
Int. J. Digit. Multim. Broadcast.
Jing Gao, Takashi Iida, Hiroyuki Mizutani, Sadanori Sakaguchi, Shuji Murakami, Atsushi Shimizu, Tomohisa Wada
2008 J jnl
Algorithm to Retrieve Aerosol Optical Properties From High-Spectral-Resolution Lidar and Polarization Mie-Scattering Lidar Measurements.
IEEE Trans. Geosci. Remote. Sens.
Tomoaki Nishizawa, Nobuo Sugimoto, Ichiro Matsui, Atsushi Shimizu, Boyan Tatarov, Hajime Okamoto
2008 — conf
Lidar Network for Monitoring Asian Dust and Air Pollution Aerosols.
IGARSS (2)
Nobuo Sugimoto, Ichiro Matsui, Atsushi Shimizu, Tomoaki Nishizawa
2008 — conf
Reinforcement Learning Using Kohonen Feature Map Associative Memory with Refractoriness Based on Area Representation.
ICONIP (2)
Atsushi Shimizu, Yuko Osana
2008 J jnl
UTGB/medaka: genomic resource database for medaka biology.
Nucleic Acids Res.
Budrul Ahsan, Daisuke Kobayashi, Tomoyuki Yamada, Masahiro Kasahara, Shin Sasaki, Taro L. Saito, Yukinobu Nagayasu, Koichiro Doi, Yoichiro Nakatani, Wei Qu, Tomoko Jindo, Atsuko Shimada, Kiyoshi Naruse, Atsushi Toyoda, Yoko Kuroki, Asao Fujiyama, Takashi Sasaki, Atsushi Shimizu, Shuichi Asakawa, Nobuyoshi Shimizu, Shin-ichi Hashimoto, Jun Yang, Yongjun Lee, Kouji Matsushima, Sumio Sugano, Mitsuru Sakaizumi, Takanori Narita, Kazuko Ohishi, Shinobu Haga, Fumiko Ohta, Hisayo Nomoto, Keiko Nogata, Tomomi Morishita, Tomoko Endo, Tadasu Shin-I, Hiroyuki Takeda, Yuji Kohara, Shinichi Morishita
2006 — conf
Integration of Mobile IPv6 into Mobile Ad-Hoc Network Systems.
Autonomic Networking
Monden Kazuya, Hiroki Satoh, Junji Yamamoto, Shomura Yusuke, Atsushi Shimizu, Masato Hayashi, Susumu Matsui, Satoshi Yoshizawa
2006 — conf
Performance of Angle Switch Diversity Using ESPAR Antenna for Mobile Reception of Terrestrial Digital TV.
VTC Fall
Mayumi Yamamoto, Makoto Taromaru, Hanae Sadamichi, Atsushi Shimizu
2006 — conf
Wireless Ad-hoc Network-Based Tourist Information Delivery System.
AINA (2)
Kenji Kawasaki, Atsushi Shimizu, Kazuya Monden, Hiroki Satoh, Masato Hayashi, Susumu Matsui
2004 C conf
MPEG interlaced video transcoding for a networked video browsing system.
VCIP
Atsushi Shimizu
2002 J jnl
"Trampeg": An MPEG-2 real-time software transcoder for low-bit-rate transmission.
Syst. Comput. Jpn.
Takashi Akutsu, Hideaki Kimata, Atsushi Shimizu, Yoshiyuki Yashima, Naoki Kobayashi
2001 A conf
A method to improve SFDR with random interleaved sampling method.
ITC
Mamoru Tamba, Atsushi Shimizu, Hideharu Munakata, Takanori Komuro
2001 J jnl
Bitstream scaling by reference frame altering.
Syst. Comput. Jpn.
Atsushi Shimizu, Atsushi Sagata, Hiroshi Watanabe, Naoki Kobayashi
1996 J jnl
A real-time motion estimation and compensation LSI with wide search range for MPEG2 video encoding.
IEEE J. Solid State Circuits
Kazuhito Suguri, Toshihiro Minami, Hiroaki Matsuda, Ritsu Kusaba, Toshio Kondo, Ryota Kasai, Takumi Watanabe, Hidenuri Sato, Nobutarou Shibata, Yutaka Tashiro, Takaaki Izuoka, Atsushi Shimizu, Hiroshi Kotera