研究者詳細 - 山脇　彰

論文 - 山脇　彰

分割表示181 件中 41 - 60 件目／全件表示 >>

仮想周辺機器を備えた高位合成画像処理ハードウェア向け汎用検証環境招待有り

山脇彰, 庄嶋篤

画像ラボ ( 日本工業出版 ) 33 ( 5 ) 20 - 27 2022年05月

Background scrolling in high-level synthesis oriented game programing library 査読有り国際誌

Lee K., Yamawaki A.

Artificial Life and Robotics 27 ( 3 ) 455 - 460 2022年04月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

We are developing a game programing library which can be converted to hardware modules by high-level synthesis, HLS technology to realize high-performance and low-power mobile terminals executing game applications. High-level synthesis is a technology that converts software into hardware automatically. The game software is executed by high-speed and low-power hardware on the reconfigurable devices in the mobile terminals instead of power-hungry software execution. To make high-level synthesis tool generate a desirable hardware module, we must describe software program well considering the hardware organization. In this paper, we develop a background scrolling processing as one of functions in high-level synthesis-oriented game software library. The pure software to realize the background scrolling has two nested loops accessing to the same array in the main loop. The former loop must finish all read and write accesses to the arrays before starting the operations of the latter loop. This prevents the latter loop starting in parallel to the former loop even if they have some parallelism. As a result, it disturbs making hardware high-speeded and well-pipelined by high-level synthesis tool and may lead to a significant latency. In this paper, we show a program description method to avoid this problem. With this method, high-level synthesis tool may convert background scrolling processing efficiently. In addition, we also evaluate the execution time, resource usage and power consumption of the hardware module that high-level synthesis generated through the experiment.

DOI： 10.1007/s10015-022-00758-7

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85128090736&origin=inward

Development of an Embedded Device with Motion Detection by Dynamic Background Subtraction Using High-Level Synthesis 査読有り国際誌

Kohei Shinyamada, Akira Yamawaki

Proceedings of The 10th IIAE International Conference on Industrial Application Engineering 2022 ( 産業応用工学会 ) 173 - 180 2022年03月

動的背景差分による動体検知機能を備えたカメラ搭載組み込みシステムの高位合成を用いた開発査読有り

新山田公平, 山脇　彰

産業応用工学会論文誌 ( 産業応用工学会 ) 10 ( 1 ) 10 - 17 2022年03月

担当区分：最終著者,　責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）

Hardware-based image processing is suitable for embedded systems because of its high speed and low power consumption. In addition, by using the technology of high-level synthesis, the creation of hardware can be done quickly and flexibly. In this study, we developed an embedded system with a camera that has a median-based dynamic background subtraction function. In this system, we introduced the concept of a ring buffer to run three pieces of hardware in parallel. As a result, when the image size is QVGA and the number of time-series images is 4, the maximum frame rate of the system is 194 fps. In addition, it was confirmed that the power efficiency of the system was much better than that of software processing.

DOI： 10.12792/jjiiae.10.1.10

CiNii Research

その他リンク： https://www.jstage.jst.go.jp/article/jjiiae/10/1/10_10/_article/-char/ja

An Investigation of Software Describing Method to Design Dual Background Scrolling Hardware in High-level Synthesis 査読有り国際誌

Kilryong Lee, Akira Yamawaki

Proceedings of The 27th International Symposium on Artificial Life and Robotics 2022 (AROB 2022) 697 - 700 2022年01月

Development of a Real Camera System with High-Level Synthesis Hardware of Median-Based Dynamic Background Subtraction 査読有り国際誌

Kohei Shinyamada, Akira Yamawaki

Proceedings of The 27th International Symposium on Artificial Life and Robotics 2022 (AROB 2022) 782 - 786 2022年01月

Development of a general purpose verification environment for high-level-synthesis image processing hardware with support for dynamic partial reconfiguration 査読有り国際誌

Atsushi Shojima,, Akira Yamawaki

Proceedings of The 27th International Symposium on Artificial Life and Robotics 2022 (AROB 2022) 750 - 755 2022年01月

Building Primitive Functionality of Web browser-based FPGA Hardware Verification System 査読有り国際誌

Tomomi Yoshizuka, Akira Yamawaki

Proceedings of The 27th International Symposium on Artificial Life and Robotics 2022 (AROB 2022) 706 - 709 2022年01月

Development of Haze Removing Hardware Using High-Level Synthesis 査読有り国際誌

Shirai D., Yamawaki A.

Proceedings of International Conference on Artificial Life and Robotics ( 株式会社ALife Robotics ) 27 612 - 615 2022年01月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

We have developed a hardware for low-power and high-speed haze removing to sharpen hazy images in batterypowered embedded image processing systems such as drones. For development, we used HLS (High-Level Synthesis), which automatically converts software into hardware. In this paper, we evaluate the performance and power efficiency of the hardware obtained by high-level synthesis based on the haze removing software developed considering the hardware specifications and show its effectiveness.

DOI： 10.5954/icarob.2022.os15-4

Scopus

CiNii Research

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125148066&origin=inward

Hardware Development of Edge-Preserving Bubble Image Conversion in High-level Synthesis 査読有り国際誌

Qin J., Yamawaki A.

Proceedings of International Conference on Artificial Life and Robotics ( 株式会社ALife Robotics ) 27 608 - 611 2022年01月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

The non-photorealistic rendering, NPR, is widely used in social networking service on the mobile device. To realize a real time NPR with low power making battery life of mobile device longer, we attempt to develop hardware module by using high-level synthesis, HLS, converting software to hardware automatically. This research focuses on edgepreserving bubble image, EPB, converting photos into image like filled with bubbles. We proposed a software description method for EPB algorithm so that HLS can generate a high-performance and low-power hardware module. Through the practical experiments, we show that our proposed description method can make HLS generate good hardware module improving the performance and power efficiency compared with the conventional method.

DOI： 10.5954/icarob.2022.os15-3

Scopus

CiNii Research

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125150712&origin=inward

Development of High Performance Hardware by High-Level Synthesis of Median-Based Dynamic Background Subtraction Method with Multiple Line Buffers 査読有り国際誌

Shinyamada K., Yamawaki A.

Proceedings of IEEE Region 10 Annual International Conference 2021(TENCON2021) 2021-December 123 - 127 2021年12月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

オンライン 2021年12月07日 - 2021年12月10日

Hardware processing is suitable for embedded image processing systems because of its lower power consumption and higher performance compared to software processing. To facilitate development, a tool called high-level synthesis, which automatically converts high-level languages into hardware description languages, is used. However, high-level synthesis of pure software does not necessarily generate efficient hardware. In this study, we attempted to generate high-performance image processing hardware using a median-based dynamic background subtraction method. As a result, we found that high-performance hardware can be generated when multiple line buffers are introduced. Compared to the non-introduced one, the performance was improved by about 13 times.

DOI： 10.1109/TENCON54134.2021.9707206

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125966122&origin=inward

Omnidirectional Background Scrolling in High-Level Synthesis Oriented Game Programing Library 査読有り国際誌

Lee K., Yamawaki A.

Proceedings of IEEE Region 10 Annual International Conference 2021 (TENCON2021) 2021-December 140 - 144 2021年12月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

オンライン 2021年12月07日 - 2021年12月10日

We are developing a game programing library which can be converted to good hardware modules by high-level synthesis, HLS, technology to realize high-performance and low-power mobile terminals executing game applications. High level synthesis, HLS, is a technology that converts software into hardware automatically. Some power-hungry parts of game software are executed by high-speed and low-power hardware on the reconfigurable devices in the mobile terminals. To make an HLS tool generate a desirable hardware module, we must describe software program well considering the hardware organization. In previous study, we developed the software describing method for horizontal background scrolling. This method improved the performance of HLS hardware significantly. In this paper, we are going to propose software description method for omnidirectional background scrolling based on previous study. With this method, HLS tool may convert background scrolling processing efficiently. In addition, we also evaluate the execution time, resource usage and power consumption of the hardware module that HLS generated through experiment.

DOI： 10.1109/TENCON54134.2021.9707379

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125964637&origin=inward

Development of a Simple Verification Environment Using FPGA for image processing Hardware Created by High-Level-Synthesis Using TCP/IP 査読有り国際誌

Atsushi Shojima, Akira Yamawaki

Proceedings of the 8th IIAE International Conference on Intelligent Systems and Image Processing 2021 ( 産業応用工学会 ) 221 - 226 2021年09月

Effect of Sorting Algorithms on High-level Synthesized Image Processing Hardware 査読有り国際誌

Kohei Shinyamada, Akira Yamawaki

Proceedings of the 8th IIAE International Conference on Intelligent Systems and Image Processing 2021 ( 産業応用工学会 ) 16 - 20 2021年09月

Hardware Development of Color Image Contrast Enhancement by High-level Synthesis 査読有り国際誌

Akira Yamawaki, Mitsunori Mizumachi, Seiichi Serikawa

Proceedings of IEEE Region 10 Symposium (TENSYMP) 2021 ( IEEE Region 10 ) 697 - 701 2021年08月

Hardware Development of Skylight Estimation Processing in Haze Removing Using High-level Synthesis 査読有り国際誌

Daiki Shirai,Akira Yamawaki

Proceedings of The 9th IIAE International Conference on Industrial Application Engineering 2021 (ICIAE2021) ( 産業応用工学会 ) 107 - 111 2021年03月

Development of Primitive Circuit in a Scalable and Flexible PWM Mechanism Using FPGA 査読有り国際誌

Soma Doi,Akira Yamawaki

Proceedings of The 9th IIAE International Conference on Industrial Application Engineering 2021 (ICIAE2021) ( 産業応用工学会 ) 264 - 267 2021年03月

An Investigation of Mobile Device Supporting Online Self-dynamic Partial Reconfiguration on a Testbed System 査読有り国際誌

Yuma Chihara,Akira Yamawaki

Proceedings of The 9th IIAE International Conference on Industrial Application Engineering 2021 (ICIAE2021) ( 産業応用工学会 ) 218 - 221 2021年03月

Development of Generic Software System Transparent to Any Flexible and Scalable Sensor Array 査読有り国際誌

Ryota Nakamura,Akira Yamawaki

Proceedings of The 9th IIAE International Conference on Industrial Application Engineering 2021 (ICIAE2021) ( 産業応用工学会 ) 212 - 217 2021年03月

Performance Effect of I/O Peripheral Dynamic Reconfiguration on FPGA 査読有り国際誌

Kazuki Hashimoto,Akira Yamawaki

Proceedings of The 9th IIAE International Conference on Industrial Application Engineering 2021 (ICIAE2021) ( 産業応用工学会 ) 208 - 211 2021年03月

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