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IEEE International Symposium on Biomedical Imaging

作者： Bernhard Kainz Philip Voglreiter Michael Sereinigg Iris Wiederstein-Grasser Ursula Mayrhauser Sonja Köstenbauer Mika Pollari Rostislav Khlebnikov Matthias Seise Tuomas Alhonnoro Yrjö Häme Daniel Seider Ronan Flanagan Claire Bost Judith Mühl David O'Neill Tingying Peng Stephen Payne Daniel Rueckert Dieter Schmalstieg Michael Moche Marina Kolesnik Philipp Stiegler Rupert H. Portugaller Department of Computing Imperial College London UK Institute for Computer Graphics and Vision (ICG) Graz University of Technology AUT Department for Surgery Medical University Graz AUT Division of Biomedical Research and Section for Surgical Research Medical University Graz AUT Medizinische Universitat Graz Graz Steiermark AT Department of Biomedical Engineering and Computational Science Aalto University FI Schloss Birlinghoven Fraunhofer Institute for Applied Information Technology GER Department of Diagnostic and Interventional Radiology Leipzig University Hospital Leipzig GER NUMA Engineering Services Ltd. Dundalk Co. Louth IRE Department of Engineering Science Keble College Oxford UK University Clinic of Radiology Medical University Graz AUT

Data below 1 mm voxel size is getting more and more common in the clinical practice but it is still hard to obtain a consistent collection of such datasets for medical image processing research. With this paper we provide a large collection of Contrast Enhanced (CE) Computed Tomography (CT) data from porcine animal experiments and describe their acquisition procedure and peculiarities. We have acquired three CE-CT phases at the highest available scanner resolution of 57 porcine livers during induced respiratory arrest. These phases capture contrast enhanced hepatic arteries, portal venous veins and hepatic veins. Therefore, we provide scan data that allows for a highly accurate reconstruction of hepatic vessel trees. Several datasets have been acquired during Radio-Frequency Ablation (RFA) experiments. Hence, many datasets show also artificially induced hepatic lesions, which can be used for the evaluation of structure detection methods.

关键词： Lesions Computed tomography Veins Biomedical imaging Animals Liver Educational institutions

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Mechanism of a learning robot manipulator for laparoscopic surgical training

Mechanism of a learning robot manipulator for laparoscopic s...

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12th International Conference on Intelligent Autonomous Systems, IAS 2012

作者： Yang, Tao Liu, Jiang Huang, Weimin Su, Yi Yang, Liangjing Chui, Chee Kong Ang Jr., Marcelo H. Chang, Stephen K. Y. Dept. of Computer Graphics and Interface Dept. of Computer Vision and Image Understanding Institute for Infocomm Research Singapore Singapore Dept. of Computing Science Institute of High Performance Computing Singapore Singapore Dept. of Mechanical Engineering National University of Singapore Singapore Singapore Dept. of Surgery National University Hospital Singapore Singapore

ISBN: (纸本)9783642339318

This paper presents a robot manipulator for hand-over-hand guidance training of laparoscopic surgery. Details of the mechanical design, kinematic analysis and control mechanism of the robot are presented. The robot records motion of surgical tool manipulated by master surgeon, and provides physical guidance to the trainee based on the recorded motion. The robotic manipulator can accurately reproduce the five degree of freedom manipulation of laparoscopic instrument during surgery. A hybrid spherical mechanism is applied for decoupling and reproducing the motion of surgical tool to facilitate implementation of control mechanism. The manipulators for left and right hands are capable of precise execution of a recorded trajectory with observed maximum error of 2.12 mm and 2 mm respectively during an experiment on user interaction. © 2013 Springer-Verlag.

关键词： Laparoscopy

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Penny: An extremely low-cost pressure-sensitive stylus for existing capacitive touchscreens 13th

Penny: An extremely low-cost pressure-sensitive stylus for e...

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13th International conference on New Interfaces for Musical Expression, NIME 2013

作者： Wang, Johnty D’alessandro, Nicolas Pon, Aura Fels, Sidney Media and Graphics Interdisciplinary Centre University of British Columbia VancouverBC Canada numediart Institute for New Media Art Technology University of Mons MonsB-7000 Belgium Interactions Lab Depts. of Music and Computer Science University of Calgary CalgaryAB Canada Electrical and Computer Engineering & MAGIC University of British Columbia VancouverBC Canada

By building a wired passive stylus we have added pressure sensitivity to existing capacitive touch screen devices for less than $10 in materials, about 1/10th the cost of existing solutions. The stylus makes use of the built-in audio interface that is available on most smartphones and tablets on the market today. Limitations of the device include the physical constraint of wires, the occupation of one audio input and output channel, and increased latency equal to the period of at least one audio buffer duration. The stylus has been demonstrated in two NIME applications thus far: a visual musical score drawing and a singing synthesis application. © 2013, Steering Committee of the International Conference on New Interfaces for Musical Expression. All rights reserved.

关键词： Touch screens

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2013年 7831 LNCS卷 V-VI页

作者： Krawiec, Krzysztof Moraglio, Alberto Hu, Ting Etaner-Uyar, A. Şima Hu, Bin Poznan University of Technology Institute of Computing Science Piotrowo 2 60-965 Poznań Poland University of Birmingham School of Computer Science Edgbaston Birmingham B15 2TT United Kingdom Dartmouth College Geisel School of Medicine Hanover NH 03755 United States Istanbul Technical University Department of Computer Engineering Masla 34469 Istanbul Turkey Vienna University of Technology Institute of Computer Graphics and Algorithms 1040 Vienna Austria

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Three dimensional adjustable cavity for flexible singulation of multiple medications in an automated medication dispenser

Three dimensional adjustable cavity for flexible singulation...

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2012 IEEE International Conference on Automation Science and engineering: Green Automation Toward a Sustainable Society, CASE 2012

作者： Toh, C.K. Ng, S.L.J. Tan, Y.O. Human Factors Engineering Programme Computer Graphics and Interface Department Institute of Infocomm Research Singapore Singapore

ISBN: (纸本)9781467304283

In the development of an effective medication management system to improve medication adherence, the challenge of flexibly dispensing of medications of multiple sizes and shapes was encountered. It is found that most of the medication dispensers in the market, as well as the feeding and orienting mechanisms in manufacturing sector, are customized to be operated with objects of specific size. In view of the inflexibility of those mechanisms, we proposed a novel method to handle and singulate medications of different sizes and shapes. A three dimensional adjustable cavity is designed as a carrier to separate and dispense one pill at a time. Rotational reciprocating vibration is then designed to provide centrifugal effect to the objects in hopper, in order to assist the singulation. An angle inclination test has been performed on the prototype built to investigate the optimum inclination of the feeding hopper. Preliminary testing has shown propitious results for dispensing round shape tablets of various sizes. The prototype built validated the concept of three dimensional adjustable cavity as a novel singulation technique. The mechanism is not only restricted to the dispensing of various sizes of pills, but has the potential to be implemented in dispensing or feeding of other objects in applications like vending machine, manufacturing system and etc. © 2012 IEEE.

关键词： Dispensers

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Introducing gesture interaction in the Ambient Assisted Living platform universaal

Introducing gesture interaction in the Ambient Assisted Livi...

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International Conference on Telecommunications (ConTEL)

作者： Andrej Grgurić Miran Mošmondor Mario Kušek Carsten Stocklöw Dario Salvi Research and Innovations Unit Ericsson Nikola Tesla Zagreb Croatia Faculty of Electrical Engineering and Computing University of Zagreb Zagreb Croatia Fraunhofer Institute for Computer Graphics Research Fraunhoferstr. 5 Darmstadt Germany Life Supporting Technologies Universidad Politecnica de Madrid Madrid Spain

Many projects aim to provide technologies and solutions that will support elderly and differently abled people in their daily lives. User interfaces in such systems are extremely important for their acceptance. Consequently, a lot of effort is invested in the development of interfaces that will support natural forms of interaction. Gesture based interaction raised particular interest in recent years because of the availability of cheap technology and its intuitiveness. In this paper we discuss problems and issues when designing user interfaces for elderly, and particularly, we introduce a gesture interaction for a project that is aiming to provide a reference platform for developing Ambient Assisted Living (AAL) services.

关键词： Senior citizens User interfaces ISO standards Guidelines Usability Context IEC standards

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Tutorial 1: Foundations and Practical Design of CMOS Image Sensors

Tutorial 1: Foundations and Practical Design of CMOS Image S...

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IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Angel Rodríguez-Vázquez Hamada Alshaer Bayan Sharif Amr Fahim Eman El Mandouh Ashraf Salem Fadi A. Aloul Hoda S. Abdel-Aty John F. Dodge Baker Mohammad Hisham Mohamed IMSE-CNM Universidad de Sevilla/CSIC AnaFocus Ltd Sevilla Spain Etisalat BT Innovation Center (EBTIC) Khalifa University Abu Dhabi UAE Electrical and Computer Engineering Dean of the College of Engineering at Khalifa Abu Dhabi UAE Semtech Corporation Irvine CA Mentor Graphics Cairo Egypt Department of Computer Science & Engineering American University in Sharjah U.A.E. Oakland University Rochester MI USA Khalifa University of Science Technology & Research (KUSTAR) UAE Rensselaer Polytechnic Institute Troy NY USA

CMOS imagers are complex systems whose design requires quite different pieces of expertise, namely: pixels, analog signal processing, pixel readout and analog-to-digital conversion, digital signal processing, output drivers, etc. Confronting the design of new imagers require hence the concourse of multidisciplinary teams. However, because correct operation calls for the close interconnection among the different parts, global knowledge is mandatory for successful design. This is particularly pertinent for the newer generations of smart imagers required for high-end applications and/or requiring ultra-high image capture, on-chip image correction, scene interpretation, high dynamic range capture, etc. All these features demand architectural and circuital innovations and pose significant challenges to designers. Also, the increased interest on sensors capable of capturing 3-D scenes raise new challenges at circuit level related to the necessity to interface pixels different from those employed for 2-D capture, on the one hand, and to extract and convert to digital domain time information, on the other hand. This tutorial addresses the design of smart CMOS imagers by following a comprehensive and complete top-down approach where each subsystem is contemplated and described as a part of a whole. Starting the formulation of the performance metrics used to specify and characterize imagers, the tutorial explains how the subsystem behavior and non-idealities impact on the global imager metrics, thereby setting the basis to specify the subsystems for given global image sensor specs. Such methodology is illustrated in the tutorial via a dedicated, MATLAB-based modeling tool which will be employed to allow the attendees gaining insight on the impact of non-ideal sub-systems behaviors. The tutorial overviews the state-of-the-art regarding: pixels; analog signal processing and read-out circuitry; data conversion circuitry, covering both amplitude data converters (required for 2-D

关键词： Tutorials Sensors Wireless sensor networks Energy harvesting Abstracts Educational institutions Cognitive radio

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The role of social context in human-robot interaction

The role of social context in human-robot interaction

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2nd International Conference of Southeast Asian Network of Ergonomics Societies, SEANES 2012

作者： Xu, Qianli Ng, Jamie Cheong, Y.L. Tan, Odelia Wong, J.B. Tay, T.C. Park, Taezoon Institute for Infocomm Research Computer Graphics and Interface Department A STAR Singapore Singapore School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore

ISBN: (纸本)9781467317344

Users' experience of interacting with a robot is mediated by the context that characterizes the co-existence of the human and the robot. However, it has been difficult to study the role of social context in human-robot interaction (HRI) in experimental settings. In this research, we evaluated how social context influenced user acceptance of social robots in a controlled experiment. Using video scenarios with low- and high-level of contextual information, we examined the role of social context in modulating user acceptance. We found that user acceptance of the robot was contingent on the social context, and that information related to social context influenced the amount of user feedback generated by the users concerning the characteristics of social robots. © 2012 IEEE.

关键词： Human robot interaction

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CLOTHING RETRIEVAL BASED ON IMAGE BUNDLED FEATURES

CLOTHING RETRIEVAL BASED ON IMAGE BUNDLED FEATURES

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2012 IEEE 2nd International Conference on Cloud Computing and Intelligence Systems

作者： Qijin Chen Jituo Li Guodong Lu Xinyu Bi Bei Wang Institute of Engineering & Computer Graphics Zhejiang University

How to evaluate the similarity between two clothing images is the core technical problem of image based clothing retrieval which is extremely useful in aiding online clothing shopping. According to the characteristics of clothing, we address this issue by computing the similarities between the bundled features of different clothing images. Each bundled feature consists of the point features (SIFT) which are further quantified into local visual words in a maximally stable extremal region (MSER). Researches show that bundled feature becomes much more discriminative than single feature, while the intrinsic geometric constraint of a bundled feature is still defective. In this paper, we add a geometric constraint by SIFTs distance matrix to improve the discriminative power. SIFTs distance matrix is constructed by the distances between every two point features (SIFT) in a bundled feature;it has its merits of scale invariance and rotation invariance. Thus, we can match the bundled features of two clothing images and calculate their similarity. Experimental results based on the clothing image database show that our approach works well in the situations with large clothing deformation, background exchange and part hidden, etc.

关键词： Clothing retrieval Image similarity SIFTs distance matrix Bundled feature

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Surface deformation with low shape error

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Journal of Information and Computational Science 2012年第16期9卷 4681-4689页

作者： Liu, Jiongzhou Li, Jituo Lu, Guodong Wang, Bei Institute of Engineering and Computer Graphics Department of Mechanical Engineering Zhejiang University Hangzhou 310027 China

Realistic surface deformation is extremely important for animation and virtual design. In this paper, a practicable approach for deforming mesh surface with low shape error is proposed. The low shape error deformation is obtained by preserving both the edge lengths and inner angles of the mesh elements, which can be achieved by minimizing a carefully designed constrained deformation energy. The deformation energy is minimized by solving a linear equation system. Experiments show that our approach yields natural deformation results in a high efficiency. © 2012 Binary Information Press.

关键词： Deformation

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