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Bian, Z.*; Ishii, Hirotake*; Shimoda, Hiroshi*; Yoshikawa, Hidekazu*; Morishita, Yoshitsugu; Kanehira, Yoshiki; Izumi, Masanori
IEICE Transactions on Information and Systems, E90-D(6), p.963 - 974, 2007/06
Times Cited Count：4 Percentile：33.25(Computer Science, Information Systems)This study designed linecode marker, a new type of paper-based marker and proposed recognition, tracking algorithm for it in order to resolve these problems. In comparison of the conventional paper-based markers, such as square markers, circle markers, the linecode marker is not only just easier to set up in complex industrial environment, but also makes it possible to use AR in industrial plant. In order to evaluate the tracking accuracy, trackable distance of the proposed tracking method, an evaluation experiment was conducted in a large room. The experiment results show that: comparing with traditional marker-based tracking method, tracking possible distance extends extremely; tracking accuracy improved to a level of 20cm in 10m distance.
Ijima, Takashi; Kiyota, Shiko; Miyamoto, Hisami; KANEHIRA, Yoshiki
JNC TN4410 2004-008, 49 Pages, 2004/10
JNC-TN4410-2004-008.pdf:17.22MB
None
Iguchi, Yukihiro; Knehira, Yoshiki; Izumi, Masanori; Fujita, Toru*; Oya, Kiyomi*
JNC TN3520 2004-001, 172 Pages, 2004/03
JNC-TN3520-2004-001.pdf:11.04MB
In the VRdose R5 version the connection with the dynamic radiation evaluation system (DRES) was the main task. DRES can calculate the dose rate field of the Fugen plant in detail. By inserting special markers into the scenario, VRdose tells DRES what changes have been made to the model. The changes are about objects that are inserted, removed, cut or moved. DRES will then calculate new dose rate fields reflecting these changes. To minimize the calculation needed for DRES, VRdose can provide a volume enclosing only the area of interest for a given scenario and give the resolution of the calculation in all axes. In addition to the DRES connection, version R5 retrieves information about the objects in the model from the Fugen object database. Among the large amount of information available, are size, weight and surface contamination of co-60 used. The wizard uses the size and weight information in the calculation of the man-work required. The surface contamination is used in a new feature that colorizes the objects after the contamination value. This makes it easier for workers to become aware of the contamination of pipes and pumps etc. R5 has been internationalized on all menus, buttons, messages and other text. VRdose can therefore be translated into any desired language. A feasibility study has been made into using Japanese characters in names and properties in the scenario. Printing of the 3D view has been implemented, which is useful for documenting. The scenario can also be printed, both as a graphical representation and in a textual report format. Other functionality that can be mentioned is output from the wizard to Cosmard and the saving of viewpoints. The manikins wear different protection masks and in version R5 the efficiency of the protection can be changed for each nuclide. Several other minor changes have been made, such as the ability to switch between extern dose and nuclide intake in the dose graph panels.
Iguchi, Yukihiro*; Kanehira, Yoshiki*; Tachibana, Mitsuo*; Johnsen, T.*
Journal of Nuclear Science and Technology, 41(3), p.367 - 375, 2004/03
The Fugen Nuclear Power Station (NPS) was shut down permanently in March 2003, and preparatory activities are underway to decommission the Fugen NPS. An engineering system to support the decommissioning is being developed to create a dismantling plan using state-of-the-art software such as 3-dimentional computer aided design (3D-CAD) and virtual reality (VR). In particular, an exposure dose evaluation system using VR has been developed and tested. The total system can be used to quantify radioactive waste, to visualize radioactive inventory, to simulate the dismantling plan, to evaluate workload in radiation environments and to optimize the decommissioning plan. The system will also be useful for educating and training workers and for gaining public acceptance.
Iguchi, Yukihiro; Sekiguchi, Mineo; Kanehira, Yoshiki
Journal of Nuclear Science and Technology, 41(3), p.367 - 375, 2004/03
Times Cited Count：39 Percentile：90.57(Nuclear Science & Technology)The Fugen Nuclear Power Station has shut down permanently in March 2003, and preparatory activities are underway to decommission Fugen NPS. An engineering system to support the decommissioning is being developed to create a dismantling plan.
; Iguchi, Yukihiro; Kanehia, Yoshiki; Shiratori, Yoshitake;
Hoken Butsuri, 38(2), p.116 - 127, 2003/06
None
Iguchi, Yukihiro; ; Kanehia, Yoshiki
Proceedings of 11th International Conference on Nuclear Engineering (ICONE-11) (CD-ROM), 0 Pages, 2003/00
None
Iguchi, Yukihiro; ; Kanehia, Yoshiki
Proceedings of 11th International Conference on Nuclear Engineering (ICONE-11) (CD-ROM), 0 Pages, 2003/00
None
Iguchi, Yukihiro; Kanehia, Yoshiki; Chujo, Masahiro*; Fujinaga, Yoshinori*
Saikuru Kiko Giho, (10), p.59 - 66, 2001/03
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Ishii, Hirotake*; Bian, Z.*; Sekiyama, Tomoki*; Shimoda, Hiroshi*; Yoshikawa, Hidekazu*; Izumi, Masanori; Kanehira, Yoshiki; Morishita, Yoshitsugu
no journal, ,
This study is to development of line-marker and hybrid tracking technology including Multi camera and gyro sensor. Evaluation experiment for new tracking technology is conducted in Nuclear power plant.
Ishii, Hirotake*; Shimoda, Hiroshi*; Bian, Z.*; Nakai, Toshinori*; Izumi, Masanori; Morishita, Yoshitsugu; Kanehira, Yoshiki*
no journal, ,
A support method of decommissioning work of nuclear power plants using Augmented Reality was proposed and a prototype system was developed. Then, using the prototype system, the proposed method was evaluated. Three workers used the prototype system along with a scenario which dismantles an ion tower, and then questionnaire and interview investigation was conducted. As the results, it was found that the proposed method that records the cutting parts on the CAD data using a stylus pen was easy and effective compared to the legacy recording method using paper documents, but a new tablet PC that has a larger screen with lighter weight is necessary in order to apply the proposed method to the real decommissioning work.
