Realistic Virtual Cables in a 2D Environment Representing a 3D Virtual Reality

A new method for the realistic visualization of virtual cables in a 2D environment, which is representing a 3D virtual reality, is presented in this paper. They are described with two consecutive cubic Bezier curves, whose common point is movable. Experiment was carried out and the optimal proportions for the parameters of the curves were obtained in order to achieve a realistic representation of cables. The suggested method has been developed for and implemented in the Engine for Virtual Electrical Engineering Equipment. The obtained results show that it is easy to manipulate the route of the virtual cables in 2D space and that they look realistic for any position of the control point.

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Virtual reality as a new trend in mechanical and electrical engineering education

Open Physics ◽

10.1515/phys-2017-0114 ◽

2017 ◽

Vol 15 (1) ◽

pp. 936-941 ◽

Cited By ~ 10

Author(s):

Dorota Kamińska ◽

Tomasz Sapiński ◽

Nicola Aitken ◽

Andreas Della Rocca ◽

Maja Barańska ◽

...

Keyword(s):

Virtual Reality ◽

Engineering Education ◽

Electrical Engineering ◽

Daily Practice ◽

Training Tool ◽

Training Strategy ◽

Interactive Training ◽

Electrical Engineering Education ◽

Simple Interface ◽

The Military

AbstractIn their daily practice, academics frequently face lack of access to modern equipment and devices, which are currently in use on the market. Moreover, many students have problems with understanding issues connected to mechanical and electrical engineering due to the complexity, necessity of abstract thinking and the fact that those concepts are not fully tangible. Many studies indicate that virtual reality can be successfully used as a training tool in various domains, such as development, health-care, the military or school education. In this paper, an interactive training strategy for mechanical and electrical engineering education shall be proposed. The prototype of the software consists of a simple interface, meaning it is easy for comprehension and use. Additionally, the main part of the prototype allows the user to virtually manipulate a 3D object that should be analyzed and studied. Initial studies indicate that the use of virtual reality can contribute to improving the quality and efficiency of higher education, as well as qualifications, competencies and the skills of graduates, and increase their competitiveness in the labour market.

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Ontology as mapping of material world

SHS Web of Conferences ◽

10.1051/shsconf/20184400055 ◽

2018 ◽

Vol 44 ◽

pp. 00055

Author(s):

Irina Leshcheva ◽

Dmitry Leshchev

Keyword(s):

Conflict Resolution ◽

Knowledge Bases ◽

Structured Data ◽

Suggested Method ◽

New Method ◽

Network Resources ◽

Material World ◽

Advantages And Disadvantages ◽

Different Types

This paper reviews currently available approaches and methods of automated population and enrichment of ontologies or ontology-based knowledge bases by structured data stored in various heterogeneous sources. Advantages and disadvantages of each approach are pointed out. The results of the analysis allow concluding that the existing methods are not effective enough to solve practical problems. A new method suggested does not have any of the specified disadvantages. The suggested method allows integrating data from different types of sources and considering the distributed nature of data and the necessity of authentication during accessing network resources. The method also suggests a solution to the problem of integrated data conflict resolution so that it will reduce the complexity of populating and enriching ontologies using the collected data arrays, irrespective of the format in which data are stored or represented.

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Multidimensional virtual reality-MVR method: a new method of visualization of multidimensional worlds

The Visual Computer ◽

10.1007/s00371-019-01653-2 ◽

2019 ◽

Vol 36 (4) ◽

pp. 733-742 ◽

Cited By ~ 1

Author(s):

Dariusz Jamróz

Keyword(s):

Virtual Reality ◽

New Method

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Automatic Registration of Multi-Projector Based on Coded Structured Light

Symmetry ◽

10.3390/sym11111397 ◽

2019 ◽

Vol 11 (11) ◽

pp. 1397

Author(s):

Shuaihe Zhao ◽

Mengyi Zhao ◽

Shuling Dai

Keyword(s):

Virtual Reality ◽

Structured Light ◽

New Method ◽

Geometric Distortion ◽

Feature Points ◽

Automatic Registration ◽

Geometric Correction ◽

Flight Simulators ◽

Display Systems

Multi-projector display systems are widely used in virtual reality, flight simulators, and other entertainment systems. Geometric distortion and color inconsistency are two key problems to be solved. In this paper a geometric correction principle is theoretically demonstrated and a consistency principle of geometric correction is first proposed. A new method of automatic registration of a multi-projector on a curved screen is put forward. Two pairs of binocular-cameras are used to reconstruct the curved screen. To capture feature points of the curved screen precisely, a group of red-blue coded structured light images is designed to be projected onto the screen. Geometric homography between each projector and the curved screen is calculated to gain a pre-warp template. Work which can gain a seamless display is illustrated by a six-projector system on the curved screen.

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Research on Experiment and Technique of Material Identification for Debris of Engineering Equipment Based on Computer Vision

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.479-481.1115 ◽

2012 ◽

Vol 479-481 ◽

pp. 1115-1118

Author(s):

Qun Zhang Tu ◽

Ming Pan ◽

Jian Xun Zhao ◽

Da Zhen Su ◽

Guo Tao Wang

Keyword(s):

Computer Vision ◽

Fault Diagnosis ◽

Identification Accuracy ◽

New Method ◽

Characteristic Parameters ◽

Material Identification ◽

Engineering Equipment

Based on micro-image, the material identification of iron and copper debris in working oil of engineering equipment is researched. By selecting four characteristic parameters of debris image, a debris recognition classifier is designed based on multi-SVM. The materials and types of debris can be fast identified after the model is trained and the identification accuracy is high, thus a new method for fault diagnosis of engineering equipment is provided.

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Measuring Digital System Latency from Sensing to Actuation at Continuous 1-ms Resolution

Presence Teleoperators & Virtual Environments ◽

10.1162/pres_a_00131 ◽

2013 ◽

Vol 22 (1) ◽

pp. 20-35 ◽

Cited By ~ 13

Author(s):

Weixin Wu ◽

Yujie Dong ◽

Adam Hoover

Keyword(s):

Virtual Reality ◽

Computing System ◽

Digital System ◽

New Method ◽

Simulator Sickness ◽

Discrete Events ◽

Cyclical Variation ◽

Sensor Error ◽

Two Systems ◽

Orientation Sensor

This paper describes a new method for measuring the end-to-end latency between sensing and actuation in a digital computing system. Compared to previous works, which generally measured the latency at 10–33-ms intervals or at discrete events separated by hundreds of ms, our new method measures the latency continuously at 1-ms resolution. This allows for the observation of variations in latency over sub 1-s periods, instead of relying upon averages of measurements. We have applied our method to two systems, the first using a camera for sensing and an LCD monitor for actuation, and the second using an orientation sensor for sensing and a motor for actuation. Our results show two interesting findings. First, a cyclical variation in latency can be seen based upon the relative rates of the sensor and actuator clocks and buffer times; for the components we tested, the variation was in the range of 15–50 Hz with a magnitude of 10–20 ms. Second, orientation sensor error can look like a variation in latency; for the sensor we tested, the variation was in the range of 0.5–1.0 Hz with a magnitude of 20–100 ms. Both of these findings have implications for robotics and virtual reality systems. In particular, it is possible that the variation in apparent latency caused by orientation sensor error may have some relation to simulator sickness.

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Accessibility Evaluation in Aircraft Cabin Based on Virtual Reality

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.651-653.1511 ◽

2014 ◽

Vol 651-653 ◽

pp. 1511-1514 ◽

Cited By ~ 3

Author(s):

Xian Li ◽

Hu Liu

Keyword(s):

Virtual Reality ◽

Virtual Environment ◽

Evaluation System ◽

Tracking System ◽

Rapid Development ◽

New Method ◽

Air Transport ◽

Aircraft Cabin ◽

Air Transport Industry ◽

Accessibility Evaluation

With the rapid development of the air transport industry, more attention is paid to interior ergonomics analysis which directly affects the time and cost spent during design. To provide a quick and human-in-loop accessibility way to evaluate accessibility in aircraft cabin, a new method based on virtual reality is proposed. In this method, the digital mock-up model is converted to other format which is need to build a virtual environment first, then virtual environment is built and a virtual hand is driven through tracking hand’s position by A.R.T(Advanced Realtime Tracking ) system to carry on accessibility evaluation in the virtual environment. Based on above-mentioned method the aircraft cabin accessibility evaluation system is designed and realized, which is verified by one case of a certain aircraft cabin. The result shows this method is simple and useful, offering a new way for accessibility evaluation in aircraft cabin.

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