Research on construction of three-dimensional visual model of roadbed slope and its lightweight display

2021 ◽  
Author(s):  
Ling Tan ◽  
He Huang ◽  
Zhongshuai Liu ◽  
Feng Xu ◽  
Ting Hu
Keyword(s):  
Three Dimensional ◽  
Visual Model

Three-Dimensional Visual Modeling Technology and Application of Open Pit Mining Boundary

2012 ◽  
Vol 524-527 ◽  
pp. 790-793 ◽  
Author(s):  
Xiao Ming Yan ◽  
Zi Long Zhou ◽  
Xi Bing Li
Keyword(s):  
Three Dimensional ◽  
Digital Terrain Model ◽  
Surface Shape ◽  
Topographic Maps ◽  
Open Pit ◽  
Open Pit Mining ◽  
Real Surface ◽  
Three Dimensional Model ◽  
Model Stability ◽  
Visual Model

With mining depth and state-wide expansion in open pit mining, it is necessary to bulid a three-dimensional visual model of open pit mining boundary, which can be used in the analysis of pit slope stability, engineering decisions, geological analysis and production planning. In this paper, a three-dimensionla visual model reflecting the complex formation load and terrain conditions was built by collecting original open pit design and geological data. With this model, stability analysis of open pit can be obtained and theoretical basis for selection of design can be provided. In the specific prcess of modelling, the original information in the existing CAD mining topographic maps were be used fully and the mine topographic maps was imported into Surpac mining software. Surface digital terrain model can be obtained elevation assignmented by corrction processing of CAD linears and vector processing of measring point data. On this basis, by using MIDAS software and considering the requirements of the scope of computational space, a three-dimensional model can be obtained through Boolean cut operations. With this model, the real surface shape of open pit mining boundary can be reflected.

Research on the Interactive Technology of Reservoir 3D Display

2013 ◽  
Vol 765-767 ◽  
pp. 576-579
Author(s):  
Yan Zhang ◽  
Yong Dan Nie ◽  
Jun Long Hou ◽  
Wen Jie He
Keyword(s):  
Three Dimensional ◽  
3D Display ◽  
Dimensional Model ◽  
Reservoir Model ◽  
3 Dimensional ◽  
Visual Model ◽  
Interactive Display ◽  
Specific Attribute ◽  
Display Technology ◽  
Open Inventor

In the process of reservoir 3D modeling and display, when the data amount of the model was large, the visual model would become huge. While the oil exploration and development experts might usually pay more attention to the distribution of the cells within some layers, some areas, or some regions with specific attribute range. This article used the MeshViz and DialogViz extended module of the Open Inventor to achieve the interactive display technology including extracting slices of the 3-dimensional model and the filtering valid cells based on the specific range of the attribute value. The proposed method could extract specific slices and display the ROI region interactively, and could help the user to analyze the characteristics of three-dimensional reservoir model more efficiently.

FRAMEWORK OF AUGMENTED REALITY APPROACH TOWARDS ERGONOMIC ASSESSMENT OF DRIVER VEHICLE PACKAGE DESIGN

2015 ◽  
Vol 77 (27) ◽  
Author(s):  
Chew Sze Soon ◽  
Raja Ariffin Raja Ghazilla ◽  
Yap Hwa Jen ◽  
Pai Yun Suen
Keyword(s):  
Augmented Reality ◽  
Human Factor ◽  
Three Dimensional ◽  
Package Design ◽  
Visual Model ◽  
Head Mounted Display ◽  
Additional Equipment ◽  
Physical Prototype ◽  
Tools And Methods ◽  
Ergonomic Evaluation

Human factor studies such as ergonomic evaluation become increasingly important in the engineering, automotive, designing and support of new advance products. Creating in-car gadgets that can be worked inside appropriate safety bound is an ergonomic issue. Several tools and methods have been developed for ergonomic evaluation. However, there are several factors that influence the difficulty of such evaluations, such as the subjectivity of comfort, high cost of mock-up systems and computerized tools, and the disadvantage of reconfiguring adjustments. The proposed system allows the user or engineer to obtain the three-dimensional visual model with the aid of additional equipment that includes a Augmented Reality head mounted display (HMD) to reduce the components of physical prototype. The user or engineer is able to determine the position of interior components to determine the most comfortable ergonomic reaching zone.  

An Improved Security 3D Watermarking Method Using Computational Integral Imaging Cryptosystem

2016 ◽  
Vol 12 (2) ◽  
pp. 1-21 ◽  
Author(s):  
Yiqun Liu ◽  
Xiaorui Wang ◽  
Jianqi Zhang ◽  
Minqing Zhang ◽  
Peng Luo ◽  
...  
Keyword(s):  
Digital Watermarking ◽  
Imaging System ◽  
Three Dimensional ◽  
Discrete Wavelet ◽  
Integral Imaging ◽  
Visual Model ◽  
Computational Integral Imaging ◽  
3D Watermarking ◽  
Display Quality ◽  
Human Visual Model

Robustness and security are difficult to be solved by conventional two-dimensional (2D) digital watermarking technology. In recent years, three-dimensional (3D) digital watermarking has become a new hotspot in optical information security. This paper presents a new improved security 3D digital watermarking method based on computational integrated imaging cryptosystem. Firstly, 3D digital watermarking is generated and encrypted by computational integral imaging cryptosystem that is implemented with smart pseudoscopic-to-orthoscopic conversion (SPOC) model. Secondly, discrete wavelet transform algorithm is applied to embed and extract the 3D digital watermarking. Finally, the extracted watermark is decrypted, and3D digital watermarking is displayed by integral imaging system. The feasibility and effectiveness of the proposed method is demonstrated by experiment. A primary implication of encrypted processing is that the majority of integral imaging cryptosystem will be encryption-in-the-loop applications, and the majority of system will improve the security and robustness of 3D digital watermarking. The new method is able to meet the requirements of robustness and security. Image quality and display quality achieve these criterions of the human visual model. The proposed method can be applied in the aspects of cloud computing and big data.

scholarly journals Linear and Nonlinear Random Walks in 1d, 2d and 3d Space.

2019 ◽  
pp. 1-2
Keyword(s):  
Random Walk ◽  
Three Dimensional ◽  
Ancient Egypt ◽  
Regular Octahedron ◽  
Visual Model ◽  
3D Space ◽  
Visual Models ◽  
Equilateral Triangles ◽  
Linear And Nonlinear ◽  
2D And 3D

The regular octahedron [1] refers to the number of five Platonic figures. It can be composed of eight equal equilateral triangles or twelve identical segments. "The octahedron is dual to the cube" [2]. The regular octahedron can also be composed of many identical small cubes just as in Ancient Egypt were pyramids of stone blocks. The construction of an octahedron using small cubes can be obtained by considering a random walk in three-dimensional (3D) space. In [3] we considered a visual model of a 3D random linear and nonlinear walk in an octahedron. In [3,4] we reviewed and systematized the visual models of 1D, 2D and 3D random linear and nonlinear walks too.

scholarly journals MODEL PERAGA SEBAGAI MEDIA PEMBELAJARAN PADA MATA PELAJARAN SAINS DAN MATEMATIKA DI SEKOLAH MENENGAH PERTAMA

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Hikmawati Hikmawati ◽  
Syahrul Azmi
Keyword(s):  
Three Dimensional ◽  
Learning Science ◽  
Mathematics Students ◽  
Visual Aids ◽  
Abstract Concepts ◽  
Visual Model ◽  
Teaching Aids ◽  
And Mathematics ◽  
Basic Ideas

Abstrak : Salah satu tujuan pembelajaran sains dan matematika di sekolah menengah pertama adalah untuk meningkatkan pengetahuan, konsep, dan keterampilan sains dan matematika siswa sebagai dasar untuk melanjutkanpendidikan ke jenjang selanjutnya. Keberadaan media dalam pembelajaran sangat diperlukan mengingat sains dan matematika memiliki konsep-konsep abstrak yang seringkali menjadi alasan sulitnya mempelajari materi kedua mata pelajaran tersebut. Media tiga dimensi dalam sains maupun alat peraga dalam matematika merupakan model peraga yang dapat dijadikan media dalam pembelajaran. Media tiga dimensi dapat berupa gambar yang setidaknya memiliki tiga sisi (depan, belakang dan samping) sehingga sebuah gambar tiga dimensi dapat dilihat dari berbagai arah. Peranan alat peraga dalam matematika adalah meletakkan ide-ide dasar konsep sehingga dengan bantuan alat peraga yang sesuai, siswa dapat memahami ide-ide dasar yang melandasi sebuah konsep, mengetahui cara membuktikan suatu rumus atau teorema, dan dapat menarik suatu kesimpulan dari hasil pengamatannya. Dengan demikian, model peraga dapat digunakan sebagai alat peraga untuk menerangkan konsep materi pelajaran sehingga siswa menjadi lebih tertarik, berminat dan memiliki motivasi belajar yang pada akhirnya akan meningkatkan prestasi belajar siswa.Kata-kata kunci : model peraga, media pembelajaran.Abstract : One goal of learning science and mathematics in secondary schools is to improve the knowledge, concepts, and skills of science and mathematics students as a basis for continuing their education to the next. The presence of media in learning is necessary considering the science and mathematics have the abstract concepts that are often the reason for the difficulty of studying the material both these subjects. Three-dimensional media in science andmathematics teaching aids in a visual model that can be used as media of learning. Media can be either three-dimensional image that has at least three sides (front, rear and side) so that a three-dimensional images can be viewed from various directions. The role of teaching aids in mathematics is to put the basic ideas of the concept that with the aid of appropriate props, students can grasp the basic ideas underlying the concept, knowing how to prove a formula or theorem, and can draw a conclusion from the results of his observations. Thus, the model can be used as a visual prop to explain the concept of subject matter so that students become more interested, interested and motivated to learn, which in turn will improve student achievement.Key words : models of visual aids, learning media.

An Improved Security 3D Watermarking Method Using Computational Integral Imaging Cryptosystem

2018 ◽  
pp. 567-587
Author(s):  
Yiqun Liu ◽  
Xiaorui Wang ◽  
Jianqi Zhang ◽  
Minqing Zhang ◽  
Peng Luo ◽  
...  
Keyword(s):  
Digital Watermarking ◽  
Imaging System ◽  
Three Dimensional ◽  
Discrete Wavelet ◽  
Integral Imaging ◽  
Visual Model ◽  
Computational Integral Imaging ◽  
3D Watermarking ◽  
Display Quality ◽  
Human Visual Model

Robustness and security are difficult to be solved by conventional two-dimensional (2D) digital watermarking technology. In recent years, three-dimensional (3D) digital watermarking has become a new hotspot in optical information security. This paper presents a new improved security 3D digital watermarking method based on computational integrated imaging cryptosystem. Firstly, 3D digital watermarking is generated and encrypted by computational integral imaging cryptosystem that is implemented with smart pseudoscopic-to-orthoscopic conversion (SPOC) model. Secondly, discrete wavelet transform algorithm is applied to embed and extract the 3D digital watermarking. Finally, the extracted watermark is decrypted, and3D digital watermarking is displayed by integral imaging system. The feasibility and effectiveness of the proposed method is demonstrated by experiment. A primary implication of encrypted processing is that the majority of integral imaging cryptosystem will be encryption-in-the-loop applications, and the majority of system will improve the security and robustness of 3D digital watermarking. The new method is able to meet the requirements of robustness and security. Image quality and display quality achieve these criterions of the human visual model. The proposed method can be applied in the aspects of cloud computing and big data.

scholarly journals Evaluating Internet Pricing Schemes: A Three-Dimensional Visual Model

ETRI Journal ◽  
2005 ◽  
Vol 27 (1) ◽  
pp. 64-74 ◽  
Author(s):  
Thuy T.T Nguyen ◽  
Grenville J. Armitage
Keyword(s):  
Three Dimensional ◽  
Internet Pricing ◽  
Visual Model ◽  
Pricing Schemes

scholarly journals Visualization System for Traffic Accident Data

2020 ◽  
Vol 4 (2) ◽  
pp. 14
Author(s):  
Raja Majid Mehmood ◽  
Su Chenlu ◽  
Hong Yating ◽  
Liu Tianyi
Keyword(s):  
Visual Information ◽  
Traffic Accident ◽  
Three Dimensional ◽  
Map Matching ◽  
Three Dimensional Model ◽  
Accident Rate ◽  
Visualization System ◽  
Visual Model ◽  
Accident Data ◽  
The Government

At present, the traffic problem is a problem that the government attaches great importance to. Many papers also put forward their own visualization models for traffic problems. This research focused on the Map-matching and Spatial-temporal Visualization of Expressway Traffic Accident Information and improves the original two-dimensional visual model of accident rate into a three-dimensional model. The goal is to represent more attributes in a visual model and make them easier to compare, so as to provide users with more intuitive visual information.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

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