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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.
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.
Hideaki Kinoshita,Takashi Umezawa,Yuya Omine,Masaaki Kasahara,José,Francisco Rodrí,guez-Vá,zquez,Gen Murakami,Shinichi Abe 대한해부학회 2013 Anatomy & Cell Biology Vol.46 No.1
There is little or no information about the distribution of elastic fibers in the human fetal head. We examined this issue in 15 late-stage fetuses (crown-rump length, 220–320 mm) using aldehyde-fuchsin and elastica-Masson staining, and we used the arterial wall elastic laminae and external ear cartilages as positive staining controls. The posterior pharyngeal wall, as well as the ligaments connecting the laryngeal cartilages, contained abundant elastic fibers. In contrast with the sphenomandibular ligament and the temporomandibular joint disk, in which elastic fibers were partly present, the discomalleolar ligament and the fascial structures around the pterygoid muscles did not have any elastic fibers. In addition, the posterior marginal fascia of the prestyloid space did contain such fibers. Notably, in the middle ear, elastic fibers accumulated along the tendons of the tensor tympani and stapedius muscles and in the joint capsules of the ear ossicle articulations. Elastic fibers were not seen in any other muscle tendons or vertebral facet capsules in the head and neck. Despite being composed of smooth muscle, the orbitalis muscle did not contain any elastic fibers. The elastic fibers in the sphenomandibular ligament seemed to correspond to an intermediate step of development between Meckel’s cartilage and the final ligament. Overall, there seemed to be a mini-version of elastic fiber distribution compared to that in adults and a different specific developmental pattern of connective tissues. The latter morphology might be a result of an adaptation to hypoxic conditions during development.
Velocity Estimation of Multiple Objects using Oculomotor System
Hideaki Takahashi,Teruo Yamaguchi,Hiroshi Harada 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
In the previous research, we proposed an oculomotor system which expanded the limits of velocity measurement using spatiotemporal differentiation method. It was proved that the accurate optical flow was estimated at large object velocity by using this system. In this paper, we propose optical flow estimation method using oculomotor system where multiple objects on image move independently at large velocity. We suggest applying oculomotor system separately to regions of the same object motion. Using this approach, high accuracy of optical flow estimation can be obtained in case of multiple objects on image moving independently at a large velocity.
Development of A Simulation Model Considering Vegetation Growth and Flushing in Arakawa River
Hideaki Sekine,Kentaro Sakamoto,Tatuya Nishimura,Takashi Asaeda 대한토목학회 2012 KSCE Journal of Civil Engineering Vol.16 No.2
In the present study, we developed a simulation model that could predict the growth of trees and erbaceousplants for a long time. The growth of plants is formulated as the material processing of the plants, photosynthesis, respiration and mortality. Empirically obtained allometry relationship is also added in the tree model. While, the herb model was formulated by sucession of plants. Combined with the physical model, it was applied to the observed results of the vegetation succession on the sediment bar of Arakawa River after the record-breaking flood in 2007. The sufficient agreement was obtained for the vegetation succession. The model enable us to predict the growth pattern of vegetation successfully.