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Image Enlargement with Back Projection of Lost High-frequency Components
Hideaki Kawano,Hideaki Orii,Hiroshi Maeda,Hiromi Fukushima,Norikazu Ikoma 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, in order to realize the image enlargement with high performance, we propose a new enlargement method, which restores high-frequency components lost in the interpolation-based methods, by using high-frequency esti-mation. The estimation is based on the eigenspace method proposed by Amano et al..The proposed enlargement method can generate lost high-frequency components by using pairs of low-and high-frequency components of the original image, and is referred as back projection for lost high-frequency components (BPLHF). Experimental results show the proposed method can achieve promising enlargement.
Hideaki Kawano,Akito Shimamura,Hiroshi Maeda,Junichi Fukuyo,Norikazu Ikoma 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
For recognition of decorated characters through existing optical character recognition system (OCR), structure extraction of the decorated characters is required. Omachi et al. proposed a structure extraction method for these characters. However, characters including both thin lines and thick lines simultaneously tend to fail the extraction of structure. To overcome the performance in Omachi’s method, we have proposed another method based on graph spectral decomposition. In the previous work, we showed applicability of the proposed method to wider range of decorated characters. However, selection criterion among decomposed components for obtaining good results have not been clarified. In this paper, we propose a new criterion to select components in the graph spectral decomposition framework for structure extraction. Experimental results show the validity of the criterion.
( Hideaki Haneishi ) 한국감성과학회 2017 춘계학술대회 Vol.2017 No.-
In this project, “Multimodal medical engineering,” we use several modalities such as CT, MRI and US to analyze the variation of cell or organ due to disease by engineering technologies and clarify its relationship. Based on the knowledge obtained there, we aim to establish some new methods for highly precise and non-invasive diagnosis and treatment. This project has an environment that engineering and medical researchers tightly collaborate and conduct a wide range of researches from fundamental study to preclinical and clinical test. Many state-of-the art equipment such CT, MRI, US, endoscope, microscope and apparatus for preparing pathological specimens are also available for promoting the project. In this project, we are also emphasizing the development of human resources through research activities. Students can receive education and advices from both medical and engineering professors. Thanks to active collaboration with companies, students can learn more practical mind in research and development. We also send students in the project to university or institute in foreign countries for long term or short term aiming the development of global human resources. Our project “Multimodal Medical Engineering for Precision Medicine” was also selected as a JSPS (Japan Society for the Promotion of Science) Core-to-Core program 2017 after very tough selection. The project lasts five years. International collaboration researches will be more activated by this support with (University of Eastern Finland (Finland), Thammasat University (Thailand), Shanghai Jiao Tong University (China) and University of Waterloo(Canada). In the presentation, some related research topics will be shortly introduced.
Interface Development for Web-based Instruction Set Simulator
Hideaki Yanagisawa,Minoru Uehara,Hideki Mori 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
HW/SW codesign tools are necessary to develop new processors in a short period of time, because both the hardware and a software development environment that includes a simulator, assembler, disassembler and compiler, need to be designed for the new processor. We have therefore develped C-DASH, a HW/SW codesign tool for designing processors. In addition, we have developed SSC-DASH (Server-Side C-DASH), which provides a web-based interface enabling processor designers to use C-DASH on the web. This paper describes the interface development for a web-based instruction set simulator in a web-based processor development environment.
Effect of piping systems on surge in centrifugal compressors
Hideaki Tamaki 대한기계학회 2008 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.22 No.10
There is a possibility that the exchange of the piping system may change the surge characteristic of a compressor. The piping system of a plant is not always the same as that of a test site. Then it is important to evaluate the effect of piping systems on surge characteristics in centrifugal compressors. Several turbochargers combined with different piping systems were tested. The lumped parameter model which was simplified to be solved easily was applied for the prediction of surge point. Surge lines were calculated with the linearlized lumped parameter model. The difference between the test and calculated results was within 10 %. Trajectory of surge cycle was also examined by solving the lumped parameter model. Mild surge and deep surge were successfully predicted. This study confirmed that the lumped parameter model was a very useful tool to predict the effect of piping systems on surge characteristics in centrifugal compressors, even though that was a simple model.