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Mammographic masses segmentation based on morphology

Mammographic masses segmentation based on morphology

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Biomedical engineering International Conference (BMEiCON)

作者： Piyamas Suapang Chadaporn Naruephai Methinee Thongyoun Sorawat Chivaprecha Biomedical Instrumentation Program Department of Physics Faculty of Sciences Rangsit University Pathumthani Thailand Department of Telecommunications Engineering Engineering Faculty King Mongkut's University of Technology Bangkok Thailand

Medical images segmentation is an important work for object recognition of the human organs and it is an important pre-processing step in medical image segmentation and 3D reconstruction. Conventionally, segmentation is detected according to some early brought forward algorithms such as gradient-based algorithm and template-based algorithm, but they are not so good for noise medical image segmentation. In this paper, basic morphological theory and operations are introduced at first, and then a novel morphological segmentation algorithm is proposed to detect the segment of mammographic masses with salt-and-pepper noise. The experimental results show that the proposed algorithm is more efficient for medical image denoising and segmentation than the usually used template-based segmentation algorithms and general morphological segmentation algorithms.

关键词： Image segmentation Image edge detection Morphology Noise Biomedical imaging Algorithm design and analysis Detectors

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A Mammography Database and Viewer System

A Mammography Database and Viewer System

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Biomedical engineering International Conference (BMEiCON)

作者： Piyamas Suapang Methinee Thongyoun Rodjarin Boontawan Sorawat Chivaprecha Biomedical Instrumentation Program Department of Physics Faculty of Sciences Rangsit University Pathumthani Thailand Department of Telecommunications Engineering Engineering Faculty King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9781467348904

A Mammography Database and Viewer System have collected and stored mammography images of Thai women, treated at the Radiology department of Hospital in Rangsit, Pathumtani, Thailand, constructed a database using the digitized mammography images, and developed an image viewing system to display these digital mammograms. The images are stored with the high resolution Matrox Morphis (MOR/2VD/84*) frame grabber board. The digital mammography database is powered by MySQL and PHP. It also has a web-based search engine (with secure access) so that the information can be made accessible to all medical team members. The image viewing software, DICOM Viewer, is coded in Borland C++ Builder and is intended to help medical professionals view and retrieve large data sets in near real time. This have already digitized 200 cases (one case per patient, twenty to forty images per case). The system also have developed a MySQL-based image database, and a PHP-based web-search engine to retrieve cases that have masses (benign or malignant) or calcifications (benign or malignant). This database has been evaluated by medical professionals and the experimental results obtained so far are very promising (high image qualities, fast access time). The system are currently developing an image content-based retrieval function for the database system in order to provide improved search capability for the medical professionals.

关键词： Databases DICOM Software Breast cancer Educational institutions

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Integrated laboratory curricula and course projects across the Electronics engineering technology program

Integrated laboratory curricula and course projects across t...

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118th ASEE Annual Conference and Exposition

作者： Zhan, Wei Goulart, Ana Elisa P. Morgan, Joseph A. Porter, Jay R. Department of Electronics Engineering Technology Texas A and M University United States Electronics and Telecommunications Engineering Technology Program Texas A and M University United States Texas A and M University United States Department of Engineering Technology and Industrial Distribution Texas A and M University United States Electronics and Telecommunications Programs United States

This paper discusses the details of the curricular development effort with the focus on the vertical and horizontal integration of laboratory curricula and course projects within the Electronics engineering technology (EET) program at Texas A&M University. Both software and hardware aspects are addressed. A common set of software tools are introduced to the sophomore students in the EET curriculum;these are then used in several junior and senior level courses. Through early and repeated exposure to these tools, students learn to use them more effectively to solve various engineering problems in laboratory and course projects. A DC permanent magnetic motor is identified as one of the common hardware platforms for multiple course projects. By using a common platform for different course projects, the students can spend much less time preparing for the course projects. With each course adding different features to the common platform, the learning experience in several courses becomes seamlessly integrated. The curriculum development effort improves the efficiency of student learning and enhances the students' educational experience. © 2011 American Society for engineering Education.

关键词： Students

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A parallel Ray Tracing architecture suitable for application-specific hardware and GPGPU implementations

A parallel Ray Tracing architecture suitable for application...

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2011 14th Euromicro Conference on Digital System Design: Architectures, Methods and Tools, DSD 2011

作者： Nery, Alexandre S. Nedjah, Nadia Franca, Felipe M.G. Jozwiak, Lech LAM - Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering Universidade do Estado Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands

ISBN: (纸本)9780769544946

The Ray Tracing rendering algorithm can produce high-fidelity images of 3-D scenes, including shadow effects, as well as reflections and transparencies. This is currently done at a processing speed of at most 30 frames per second. Therefore, actual implementations of the algorithm are not yet suitable for interactive real-time rendering, which is required in games and virtual reality based applications. Fortunately, the algorithm allows for massive parallelization of its computations. In this paper, we present a parallel architecture for ray tracing based on a uniform spatial subdivision of the scene and exploiting an embedded computation of ray-triangle intersections. This approach allows for a significant acceleration of intersection computations, as well as, a reduction of the total number of the required intersections checks. Furthermore, it allows for these checks to be performed in parallel and in advance for each ray. In this paper we discuss and analyze an ASIP-based implementation using FPGAs and a GPGPU-based parallel implementation of the proposed architecture. The performance of both implementations are reported and compared." © 2011 IEEE.

关键词： Ray tracing

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Hardware reuse in modern application-specific processors and accelerators

Hardware reuse in modern application-specific processors and...

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2011 14th Euromicro Conference on Digital System Design: Architectures, Methods and Tools, DSD 2011

作者： Nery, Alexandre S. Jozwiak, Lech Lindwer, Menno Cocco, Mauro Nedjah, Nadia França, Felipe M.G. LAM - Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering Universidade do Estado do Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands Silicon Hive - Intel UMG Netherlands

ISBN: (纸本)9780769544946

Effective exploitation of the application-specific parallel patterns and computation operations through their direct implementation in hardware is the base for construction of high-quality application-specific (re-) configurable application specific instruction set processors (ASIPs) and hardware accelerators for modern highly-demanding applications. Although it receives a lot of attention from the researchers and practitioners, a very important problem of hardware reuse in ASIP and accelerator synthesis is clearly underestimated and does not get enough attention in the published research. This paper is an effect of an industry and academic collaborative research. It analyses the problem of hardware sharing, shows its high practical relevance, as well as a big influence of hardware sharing on the major circuit and system parameters, and its importance for the multi-objective optimization and tradeoff exploitation. It also demonstrates that the state-of-the-art synthesis tools do not sufficiently address this problem and gives several guidelines related to enhancement of the hardware reuse. © 2011 IEEE.

关键词： Multiobjective optimization

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A parallel architecture for ray-tracing with an embedded intersection algorithm

A parallel architecture for ray-tracing with an embedded int...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Alexandre S. Nery Nadia Nedjah Felipe M.G. França Lech Jozwiak LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhovan University of Technology Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro (UERJ) Brazil

Real time rendering of three-dimensional scenes in Ray Tracing is a hard problem. However, parallel implementations have been enabling real time performance, as the algorithm can be highly parallelized. Thus, a custom parallel design in hardware is likely to achieve a good performance. In this paper, we further improve the GridRT architecture overall performance by embedding the ray-triangle intersection computation into the precessing elements that form the architecture. Low cost and high rendering performance are the main concerns in this novel design. The results show that the execution time of each intersection computation is reduced by at least 50%, while the area cost is practically unchanged or even reduced when compared to the original GridRT implementation.

关键词： Ray tracing Registers Equations USA Councils Mathematical model Parallel architectures

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Hardware Reuse in Modern Application-Specific Processors and Accelerators

Hardware Reuse in Modern Application-Specific Processors and...

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Euromicro Symposium on Digital System Design

作者： Alexandre S. Nery Lech Jozwiak Menno Lindwer Mauro Cocco Nadia Nedjah Felipe M.G. Franca LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhoven University of Technology Netherlands Silicon Hive-Intel UMG Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro Brazil

Effective exploitation of the application-specific parallel patterns and computation operations through their direct implementation in hardware is the base for construction of high-quality application-specific (re-)configurable application specific instruction set processors (ASIPs) and hardware accelerators for modern highly-demanding applications. Although it receives a lot of attention from the researchers and practitioners, a very important problem of hardware reuse in ASIP and accelerator synthesis is clearly underestimated and does not get enough attention in the published research. This paper is an effect of an industry and academic collaborative research. It analyses the problem of hardware sharing, shows its high practical relevance, as well as a big influence of hardware sharing on the major circuit and system parameters, and its importance for the multi-objective optimization and tradeoff exploitation. It also demonstrates that the state-of-the-art synthesis tools do not sufficiently address this problem and gives several guidelines related to enhancement of the hardware reuse.

关键词： Hardware Resource management Computer architecture Optimization program processors Adders Delay

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Research on secondary spectrum trading mechanisms based on technical and market changes

Research on secondary spectrum trading mechanisms based on t...

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2010 IEEE Symposium on New Frontiers in Dynamic Spectrum, DySPAN 2010

作者： Yoon, Hyenyoung Hwang, Junseok Weiss, Martin B. H. Technology Management Economics and Policy Program Collage of Engineering Seoul National University Seoul 151-742 Korea Republic of Department of Information Science and Telecommunications School of Information Sciences University of Pittsburgh Pittsburgh PA United States

ISBN: (纸本)9781424451883

Due to the increase of spectrum demand, the value of spectrum resource has been increased and efficiency of spectrum usage has been important issues in the wireless industry. Therefore recently, there have been many efforts on changing spectrum management framework based on the market mechanism. This research analyzes three different mechanisms as an alternative of secondary trading framework;a brokerage mechanism, auctions and a direct trading. As a consequence, this research suggests an optimal framework for the secondary use trading based on the in-depth simulations which consider different attributes by technical characteristics and market changes and investigate economic values and competition environments. ©2010 IEEE.

关键词： Commerce

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Research on Secondary Spectrum Trading Mechanisms Based on Technical and Market Changes

Research on Secondary Spectrum Trading Mechanisms Based on T...

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IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, DySPAN

作者： Hyenyoung Yoon Junseok Hwang Martin B. H. Weiss Technology Management Economics and Policy Program College of Engineering Seoul National University Seoul South Korea Department of Information Science and Telecommunications School of Information Sciences University of Pittsburgh Pittsburgh PA USA

Due to the increase of spectrum demand, the value of spectrum resource has been increased and efficiency of spectrum usage has been important issues in the wireless industry. Therefore recently, there have been many efforts on changing spectrum management framework based on the market mechanism. This research analyzes three different mechanisms as an alternative of secondary trading framework; a brokerage mechanism, auctions and a direct trading. As a consequence, this research suggests an optimal framework for the secondary use trading based on the in-depth simulations which consider different attributes by technical characteristics and market changes and investigate economic values and competition environments.

关键词： Radio spectrum management Environmental economics Communications Society Communication industry technology management Information science Industrial economics Wireless communication Multiaccess communication Pricing

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Enhancements to a retention program for women engineering technology students by the addition of a social support network and community building activities

Enhancements to a retention program for women engineering te...

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2009 ASEE Annual Conference and Exposition

作者： Dell, Elizabeth Christman, Jeanne Wolcott, Teresa Valentine, Maureen Department of Manufacturing and Mechanical Engineering Technology Rochester Institute of Technology United States Department of Electrical Computer and Telecommunications Engineering Technology Rochester Institute of Technology United States Department of Computer Engineering Technology Program WIT in the Civil Engineering Technology program RIT South Africa College of Applied Science and Technology Rochester Institute of Technology United States

This paper describes a low-cost, successful program to help retain female engineering technology students with the ultimate goal of increasing the number of female graduates of our engineering technology programs. This program was started in 2003. The programming initially focused on academic support in the form of tutoring, formation of study groups and reimbursement for academic laboratory kits. This program did improve retention, but a survey of our students found that they also desired social support and opportunities to serve the community. Since the addition of programming involving social support and community building, retention of women students in the engineering technology programs has improved by an average of 6% per year. In addition to improved retention, the number of students receiving a D, F or Withdrawing from the core first- and second-year courses in these programs has dropped by over 75%. © American Society for engineering Education, 2009.

关键词： Students

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