A SERVER-CLIENT SYSTEM FOR OPTIMIZED PLANNING OF OUTDOOR 3D LASER SCANNING

Effective and practical planning for laser scanning of outdoor construction is a challenging task. The selection of scanner positions according to on-site conditions within a limited time typically depends on ad-hoc procedures based on an operator's personal experiences. By using mathematical programming, the authors have been developing a planning technique to obtain minimum scan positions and their best configuration as an optimized solution. This technique takes into account the visibilities of the target object from every candidate scan position, based on precedent information such as 2D plans of the jobsite or primitive 3D models based on photogrammetry before starting the on-site scanning. Because existing applications cannot handle replanning and additional jobsite conditions, adhering to a prepared plan is often difficult. This paper proposes a mobile application to deal with the replanning functionality. Using a server-client system implementation, the proposed method transfers the high computational capability of the server to a mobile client at a jobsite

Eccentric Figure-Eight Coils for Transcranial Magnetic Stimulation

Previously we proposed an eccentric figure-eight coil that can cause threshold stimulation in the brain at lower driving currents. In this study, we performed numerical simulations and magnetic stimulations to healthy subjects for evaluating the advantages of the eccentric coil. The simulations were performed using a simplified spherical brain model and a realistic human brain model. We found that the eccentric coil required a driving current intensity of approximately 18% less than that required by the concentric coil to cause comparable eddy current densities within the brain. The eddy current localization of the eccentric coil was slightly higher than that of the concentric coil. A prototype eccentric coil was designed and fabricated. Instead of winding a wire around a bobbin, we cut eccentric-spiral slits on the insulator cases, and a wire was woven through the slits. The coils were used to deliver magnetic stimulation to healthy subjects; among our results, we found that the current slew rate corresponding to motor threshold values for the concentric and eccentric coils were 86 and 78 A/µs, respectively. The results indicate that the eccentric coil consistently requires a lower driving current to reach the motor threshold than the concentric coil. Future development of compact magnetic stimulators will enable the treatment of some intractable neurological diseases at home. Bioelectromagnetics. 35:55–65, 2015. © 2014 Wiley Periodicals, Inc.ArticleBIOELECTROMAGNETICS. 36(1):55-65 (2015)journal articl

Embedded Ubiquitous Services on Hospital Information Systems.

A Hospital Information Systems (HIS) have turned a hospital into a gigantic computer with huge computational power, huge storage and wired/wireless local area network. On the other hand, a modern medical device, such as echograph, is a computer system with several functional units connected by an internal network named a bus. Therefore, we can embed such a medical device into the HIS by simply replacing the bus with the local area network. This paper designed and developed two embedded systems, a ubiquitous echograph system and a networked digital camera. Evaluations of the developed systems clearly show that the proposed approach, embedding existing clinical systems into HIS, drastically changes productivity in the clinical field. Once a clinical system becomes a pluggable unit for a gigantic computer system, HIS, the combination of multiple embedded systems with application software designed under deep consideration about clinical processes may lead to the emergence of disruptive innovation in the clinical field

考古学プロジェクトにおける3DデジタルアーカイブのためのARインタフェース

古代文化財の保存や修復，活用方法における学術研究では，考古学をはじめとする多分野の専門家による共同活動と情報共有必要となる．本稿では，３次元計測に基づいて現場を再現した仮想空間において，任意の場所に関連付けて情報を蓄積し共有することが可能なデータベースをウェブアプリケーションとして構築し，さらに，現場での利用を想定したＡＲ(Augmented Reality)によるユーザインタフェースを提案する．第20回日本バーチャルリアリティ学会大会　日時：2015年9月9-11日　場所：芝浦工業大学豊洲キャンパ

Abusir 3D survey 2015

In 2015, in collaboration with the Czech Institute of Egyptology, we, a Japanese consortium, initiated the Abusir 3D Survey (A-3DS) for the 3D documentation of the site’s pyramids, which have not been updated since the time of the architectural investigations of Vito Maragioglio and Celeste Rinaldi in the 1960s to the 1970s. The first season of our project focused on the exterior of Neferirkare’s pyramid, the largest pyramid at Abusir. By developing a strategic mathematical 3D survey plan, step-by-step 3D documentation to suit specific archaeological needs, and producing a new display method for the 3D data, we successfully measured the dimensions of the pyramid in a cost-effective way.31

Abusir 3D survey 2015

In 2015, in collaboration with the Czech Institute of Egyptology, we, a Japanese consortium, initiated the Abusir 3D Survey (A-3DS) for the 3D documentation of the site’s pyramids, which have not been updated since the time of the architectural investigations of Vito Maragioglio and Celeste Rinaldi in the 1960s to the 1970s. The first season of our project focused on the exterior of Neferirkare’s pyramid, the largest pyramid at Abusir. By developing a strategic mathematical 3D survey plan, step-by-step 3D documentation to suit specific archaeological needs, and producing a new display method for the 3D data, we successfully measured the dimensions of the pyramid in a cost-effective way