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Journal articles on the topic '3D Computer Model'

Author: Grafiati

Published: 28 May 2022

Last updated: 18 July 2025

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1

Tomilova, O. V., and N. V. Rokotov. "3D Model of the Winding Product." Scientific Visualization 16, no. 4 (2024): 67–81. http://dx.doi.org/10.26583/sv.16.4.07.

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The article presents the results of computer modeling of a winding product. It describes the method for creating a 3D model based on a series of flat sections passing through the axis of the package. The issues encountered during 3D modeling and their solutions are discussed. The authors propose using the continued fraction method to describe the structure of winding products and optimize the model for subsequent calculations in CAE programs. The article provides information about the process of creating a 3D model of the winding product, as well as the possibilities for reducing computational

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2

Ding, Huan Wen, Guang Wen Yu, Qiang Tu, Jun Feng Jia, Jian Jian Shen, and Ying Jun Wang. "3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery." Advanced Materials Research 804 (September 2013): 174–79. http://dx.doi.org/10.4028/www.scientific.net/amr.804.174.

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To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an osteotomy method was sele

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Xing, Shu Jun, Xun Bo Yu, Tian Qi Zhao, et al. "Ground Based 360° Three-Dimensional Display of the Computer Model." Advanced Materials Research 846-847 (November 2013): 1844–47. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.1844.

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Most technologies provide three-dimensional (3D) display in the front of screens which are in parallel with the walls, and the sense of immersion is decreased. To get the right ground based 3D imaging, cameras imaging planes should be parallel to the public focus plane, and the cameras optical axes should be shifted to the center of the public focus plane in both vertical and horizontal directions. Virtual cameras are used to display 3D model in computer system. The virtual capturing methods for ground based 3D display are presented. The position of virtual camera is determined by the observer

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Sarnadsky, Vladimir Nikolayevich, Sergey Yakovlevich Vilberger, Alla Vladimirovna Shevchenko, and Tatyana Nikiforovna Sadovaya. "ACCURACY STUDY OF SURFACE SHAPE RECONSTRUCTION OF A HUMAN BODY MODEL BY COMPUTER OPTICAL TOPOGRAPHY." Hirurgiâ pozvonočnika, no. 2 (June 22, 2006): 062–67. http://dx.doi.org/10.14531/ss2006.2.62-67.

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Objective. To study the accuracy of 3D surface reconstruction of human body model by computer optical topography as compared to a multislice computed tomography. Material and Methods. A model of a trunk dorsal surface of a patient with III Grade right side scoliosis in the thoracic spine was used for study. Computer optical topography was performed with a serial installation TODP, METOS Ltd., and multislice computed tomography – with a helical tomograph Siemens Somatom Sensation 4. Results. Comparison of obtained magnitudes of clinical parameters, which are the most significant for diagnostics

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Ding, Huan Wen, Qiang Tu, Hong Wang, et al. "3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery." Advanced Materials Research 787 (September 2013): 947–53. http://dx.doi.org/10.4028/www.scientific.net/amr.787.947.

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Background: To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Methods: Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an oste

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Qian, Z., Erik Schlangen, Guang Ye, and Klaas van Breugel. "3D Lattice Fracture Model: Theory and Computer Implementation." Key Engineering Materials 452-453 (November 2010): 69–72. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.69.

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The lattice fracture model is presented in this paper, which is intended to simulate the fracture processes in multiphase materials to obtain the mechanical behavior in terms of load-displacement diagram and the cracks propagation. The basic procedures of lattice fracture analysis is that imposing a prescribed displacement on a lattice structure, finding the critical lattice element with the highest stress/strength ratio, removing it from the system and repeating until the system fails globally. One of the challenges in computer implementation of 3D lattice fracture model is the huge demand fo

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Sato, Yoichi, and Katsushi Ikeuchi. "Reflectance Analysis for 3D Computer Graphics Model Generation." Graphical Models and Image Processing 58, no. 5 (1996): 437–51. http://dx.doi.org/10.1006/gmip.1996.0036.

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8

John, Siju, and S. N. Kumar. "6D Hyperchaotic Encryption Model for Ensuring Security to 3D Printed Models and Medical Images." Journal of Image and Graphics 12, no. 2 (2024): 117–26. http://dx.doi.org/10.18178/joig.12.2.117-126.

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In the 6G era, where ultra-fast and reliable communication is expected to be ubiquitous, encryption shall continue to play a crucial role in ensuring the security and privacy of data. Encryption and decryption of medical images and 3D printed models using 6D hyperchaotic function is proposed in this research work for ensuring security in data transfer. Here we envisage using a six-dimensional hyperchaotic system for encryption purposes which shall offer a high level of security due to its complex and unpredictable dynamics with multiple positive Lyapunov exponents. This system can potentially

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9

Qian, Li. "3D Rotary Model Design Based on Accelerometer." Applied Mechanics and Materials 241-244 (December 2012): 1357–60. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1357.

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Accelerometer is the important sensor of MEMS inertial sensors and is applied in many occasions. A three dimension model is designed to accomplish rotary motion in 3D space and the model is introduced to the computer input system to enhance the functions of the computer input system. In order to indicate the feasibility and effectiveness, a Demo platform with AVR controller is designed to control the rotary motion of accelerometer solid model.

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10

Thilmany, Jean. "Outside In." Mechanical Engineering 131, no. 08 (2009): 38–41. http://dx.doi.org/10.1115/1.2009-aug-5.

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This article discusses reverse engineering software is slowly changing the way design engineers do their everyday jobs. With the pervasiveness of computer-aided design packages, reverse engineering technology has become a practical tool to create a 3D virtual model of an existing physical part. This model is then available to be used in 3D CAD, computer-aided manufacturing, or other computer-aided engineering applications. The reverse engineering process needs hardware and software that work together. The hardware is used to measure an object, and the software reconstructs it as a 3D model. Th

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11

Edelmers, Edgars, Dzintra Kazoka, Katrina Bolocko, and Mara Pilmane. "Different Techniques of Creating Bone Digital 3D Models from Natural Specimens." Applied System Innovation 5, no. 4 (2022): 85. http://dx.doi.org/10.3390/asi5040085.

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The choice of technique for the creation of a 3D digital human bone model from natural specimens has a critical impact on the final result and usability of the obtained model. The cornerstone factor in 3D modeling is the number of faces of polygon mesh, along with topological accuracy, as well as resolution and level of detail of the texture map. Three different techniques (3D scanning, photogrammetry, and micro-computed tomography) have been used to create a digital 3D model of the human zygomatic bone. As implementation and use of 3D models can be divided into three main categories—visualiza

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Kubota, Tetsuyuki, and Peter Chow. "Development of CAD-to-CAE Model Preparation Technology." Applied Mechanics and Materials 459 (October 2013): 325–29. http://dx.doi.org/10.4028/www.scientific.net/amm.459.325.

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This paper explains and demonstrates how to reduce time for preparation of 3-dimensional (3D) geometrical Computer-Aided-Engineering (CAE) model from 3D Computer-Aided-Design (CAD) data. In generally, CAE model preparation is labor intensive and takes long time. Main part of preparation work is simplification of 3D-CAD data to decrease mesh scale and without impacting the solution accuracy. The purpose of this study is to create automatic CAE model preparation technology for reduction of preparation time. In this study, automatic model preparation method is developed by using of geometrical an

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Xu, Pengfei, Hongbo Fu, Youyi Zheng, Karan Singh, Hui Huang, and Chiew-Lan Tai. "Model-Guided 3D Sketching." IEEE Transactions on Visualization and Computer Graphics 25, no. 10 (2019): 2927–39. http://dx.doi.org/10.1109/tvcg.2018.2860016.

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Jayakar, Kashmira. "Interactive Human 3D Model with Conventional AI." International Journal for Research in Applied Science and Engineering Technology 12, no. 5 (2024): 4993–99. http://dx.doi.org/10.22214/ijraset.2024.62699.

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Abstract: The convergence of interactive human 3D models with conventional artificial intelligence (AI) represents a groundbreaking fusion of computer graphics and intelligent systems. This interdisciplinary field combines advanced 3D modeling techniques with classical AI methodologies to create interactive virtual representations of humans. Rigorous studies in 3D modeling and animation form the basis for lifelike avatars, while conventional AI empowers these models with the ability to understand user inputs, make contextually relevant decisions, and engage in dynamic and responsive interactio

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Shrivastava, Akash. "3D Model of the Planetary System." Applied Mechanics and Materials 110-116 (October 2011): 3111–16. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.3111.

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An effort is made to develop a computer programme by using C++ language to generate the orbits of the planets of the solar system in a three dimentional view. The programme presented makes the orbits and one can see the rotations. It is also possible to make the same programme in 2D.

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Wuttidittachotti, Pongpisit, and Pornsak Preelakha. "An asymmetric encryption method for 3D mesh model using elgamal with elliptic curve cryptography." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 2 (2022): 959–69. https://doi.org/10.11591/ijeecs.v27.i2.pp959-969.

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The 3D mesh (Polygon mesh) model has been widely used in multiple computer technology fields such as computer graphic design and modern 3D animation. 3D mesh repositories were created to support the contribution of many 3D artist-designers and have become an important data source. This research is aimed at introducing asymmetric encryption for a 3D mesh model to improve encryption using elgamal elliptic curve cryptography with Fischer-Yates shuffling. The researchers evaluated the performance of the proposed model using Entropy, mean squared error (MSE), and peak signal noise ratio (PSNR) as e

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17

Ling, Tong, and Yun Ma. "Computer 3D Scene Simulation of Ecological Landscape Layout Planning." Advances in Multimedia 2022 (September 5, 2022): 1–11. http://dx.doi.org/10.1155/2022/6602095.

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There are some problems in traditional 3D landscape construction and virtual display, such as inflexible landscape spatial organization and limitations of virtual garden simulation in reality. Virtual reality, virtual plants and geographic information systems, and other technologies are used. Based on parameterized method in constructing 3D landscape scene, the main elements of the landscape were, respectively, constructed and rendered in 3D model, and a complete 3D landscape scene construction model was formed. OpenGL shader language was used for rendering, improved NSGA-II algorithm was used

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Perens, Gregory, Justin Chyu, Kevin McHenry, Takegawa Yoshida, and J. Paul Finn. "Three-Dimensional Congenital Heart Models Created With Free Software and a Desktop Printer: Assessment of Accuracy, Technical Aspects, and Clinical Use." World Journal for Pediatric and Congenital Heart Surgery 11, no. 6 (2020): 797–801. http://dx.doi.org/10.1177/2150135120952072.

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Background: Three-dimensional printing is increasingly recognized as a valuable tool for congenital heart disease (CHD) procedural planning and education. Cost and complexity currently limit the more widespread adoption of this technology. We sought to demonstrate the accuracy of 3D printed CHD models created from contrast-enhanced magnetic resonance imaging (MRI) and computed tomography (CT) scans using free software and an inexpensive desktop fused filament fabrication (FFF) printer. Methods: Solid segmentations of the intracardiac blood pool were created with the program ITK-SNAP. Using the

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19

Bergen, Steve, and Brian J. Ross. "Aesthetic 3D model evolution." Genetic Programming and Evolvable Machines 14, no. 3 (2013): 339–67. http://dx.doi.org/10.1007/s10710-013-9187-8.

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20

Navratil, G., P. Konturek, and I. Giannopoulos. "INTERACTING WITH 3D MODELS – 3D-CAD VS. HOLOGRAPHIC MODELS." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences VI-4/W1-2020 (September 3, 2020): 129–34. http://dx.doi.org/10.5194/isprs-annals-vi-4-w1-2020-129-2020.

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Abstract. A problem with 3D models is that devices used to display them are typically two-dimensional, i.e., computer monitors or printed maps. User interfaces of computer software are based on mouse, touchscreen, keyboards, etc. and are optimized for this dimensionality. However, this causes problems when working with 3D models and the user must adapt her actions by interpreting the missing third dimension. While this might not necessarily pose a problem for frequent users, infrequent users may find this quite challenging. Holographic models, on the other hand, float in front of the user, pro

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21

Höper, C., G. Seemann, F. B. Sachse, H. Zhang, and O. Dössel. "3D COMPUTER MODEL OF HUMAN ATRIAL ANATOMY AND ELECTROPHYSIOLOGY." Biomedizinische Technik/Biomedical Engineering 48, s1 (2003): 2–3. http://dx.doi.org/10.1515/bmte.2003.48.s1.2.

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22

Trunk, Primoz, Jaka Mocnik, Roman Trobec, and Borut Gersak. "3D heart model for computer simulations in cardiac surgery." Computers in Biology and Medicine 37, no. 10 (2007): 1398–403. http://dx.doi.org/10.1016/j.compbiomed.2006.11.003.

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23

Derigent, William, Emilie Chapotot, Gabriel Ris, Sébastien Remy, and Alain Bernard. "3D Digitizing Strategy Planning Approach Based on a CAD Model." Journal of Computing and Information Science in Engineering 7, no. 1 (2006): 10–19. http://dx.doi.org/10.1115/1.2410023.

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The objective of this paper is to describe a new method to determine the three-dimensional (3D) digitizing strategy for a computer aided design (CAD) known mechanical part by using a plane laser sensor. The Research Centre for Automatic control in Nancy, France has initiated a project to create an automatic 3D digitizing system. Previous papers focused on the visibility determinations using spherical geometry in a three axis environment. Here, the latest developments are presented. They enable one to improve this approach by taking into account a five axis environment. Using a new approach bas

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Liu, Dan. "3D Face Geometry Optimization Using Artificial Intelligence and Computer Graphics." Scientific Programming 2022 (March 22, 2022): 1–9. http://dx.doi.org/10.1155/2022/9959153.

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Human face plays an indispensable role in emotional expression and information exchange, which attracts large number of researchers to study face recognition. Nowadays, with the rapid development of computer graphics, artificial intelligence, and other technologies, the ability of the human vision system to recognize facial expressions and facial organs is enhanced. More and more experts think about how to make the computer vision system have this capability. By combining artificial intelligence and computer graphics, this paper studies how to optimize the 3D face network model and extract geo

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Jayakar, Kashmira, Payal Sonawane, Samruddhi Shirke, and Shubham Garkar. "Interactive Human 3D Model with Conventional AI." International Journal for Research in Applied Science and Engineering Technology 12, no. 2 (2024): 38–42. http://dx.doi.org/10.22214/ijraset.2024.58238.

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Abstract: The convergence of interactive human 3D models with conventional artificial intelligence (AI) represents a groundbreaking fusion of computer graphics and intelligent systems. This interdisciplinary field combines advanced 3D modeling techniques with classical AI methodologies to create interactive virtual representations of humans. Rigorous studies in 3D modeling and animation form the basis for lifelike avatars, while conventional AI empowers these models with the ability to understand user inputs, make contextually relevant decisions, and engage in dynamic and responsive interactio

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Li, Yuan-Ta, Chun-Chi Hung, Yu-Ching Chou, et al. "Surgical Treatment for Posterior Dislocation of Hip Combined with Acetabular Fractures Using Preoperative Virtual Simulation and Three-Dimensional Printing Model-Assisted Precontoured Plate Fixation Techniques." BioMed Research International 2019 (February 28, 2019): 1–9. http://dx.doi.org/10.1155/2019/3971571.

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Background and Purpose. Hip dislocation combined with acetabular fracture remains a challenging condition for orthopedic surgeons. In this study, we utilized a computer-assisted simulation and three-dimensional (3D) printing technology to treat patients with hip dislocation combined with acetabular fracture. We hypothesized that the 3D printing-assisted method would shorten the internal fixation time and surgical time. Methods. We retrospectively reviewed 16 patients diagnosed with traumatic posterior dislocation of hip combined with acetabular fractures and treated with plate fixation from Se

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Ai, Ju Mei, and Ping Du. "Discussion on 3D Print Model and Technology." Applied Mechanics and Materials 543-547 (March 2014): 130–33. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.130.

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3D printing is a new technology of computer science, is an important topic in the field of academic discussion, is still in the primary stage of 3D printing technology in China, the application is not widespread, so scholars have discussed a lot of work to do. This paper introduces the 3D printing technology international and domestic development situation, the working principle, the printing process and technology, proposed the application bottleneck 3D printing technology is to manufacture, printing materials therefore, electroactive materials developed for 3D printing will become an importa

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Tan, Xiu Hu. "A 3D Model Watermarking Algorithm." Advanced Materials Research 798-799 (September 2013): 708–11. http://dx.doi.org/10.4028/www.scientific.net/amr.798-799.708.

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The popularity of 3D content is on the rise since it provides an immersive experience to viewers. In this paper, we present a new approach to watermarking 3D models based on optimization statistics. Through choosing the vertexes, we are able to obtain to the embedded watermark that has the least modified to topology transform of the 3D geometry model, and then project the watermark to the space that has the least mean square error value. So, we obtain that the robustness of the approach lies in hiding a watermark in the space that is least susceptible to the 3D model potential modification. Th

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Chen, Yin, Wei Jiang, Tao Yu, Qizhen Zhou, and Zhiquan Cheng. "Biharmonic 3D Parametric Human Model." Journal of Computer-Aided Design & Computer Graphics 34, no. 07 (2022): 1108–17. http://dx.doi.org/10.3724/sp.j.1089.2022.19002.

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Sekou, Singare. "Manufacture of Custom Contoured Seat Cushions Using Computer-Aided Design Computer-Aided Manufacturing (CAD/CAM) Technique." Advanced Materials Research 201-203 (February 2011): 342–46. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.342.

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In the rehabilitation engineering area, the pressure ulcer prevention is an important and healthy problem, especially for people with the spinal cord injured (SCI). This paper aim to develop a computer aided design and computer aided manufacture (CAD/CAM) method to manufacture custom cushions to prevent pressure ulcer. A patient’s buttock was digitized using 3D laser scanner, and the captured buttock data was processed in reverse engineering environment to generate the 3D surface model of the buttock. The 3D surface model of the buttock is imported into Unigraphics software to create the solid

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Bekono, Boris D., Akori E. Esmel, Brice Dali, et al. "Computer-Aided Design of Peptidomimetic Inhibitors of Falcipain-3: QSAR and Pharmacophore Models." Scientia Pharmaceutica 89, no. 4 (2021): 44. http://dx.doi.org/10.3390/scipharm89040044.

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In this work, antiparasitic peptidomimetics inhibitors (PEP) of falcipain-3 (FP3) of Plasmodium falciparum (Pf) are proposed using structure-based and computer-aided molecular design. Beginning with the crystal structure of PfFP3-K11017 complex (PDB ID: 3BWK), three-dimensional (3D) models of FP3-PEPx complexes with known activities ( IC50exp) were prepared by in situ modification, based on molecular mechanics and implicit solvation to compute Gibbs free energies (GFE) of inhibitor-FP3 complex formation. This resulted in a quantitative structure–activity relationships (QSAR) model based on a l

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Bojcetic, Nenad, Filip Valjak, Dragan Zezelj, and Tomislav Martinec. "Automatized Evaluation of Students’ CAD Models." Education Sciences 11, no. 4 (2021): 145. http://dx.doi.org/10.3390/educsci11040145.

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The article describes an attempt to address the automatized evaluation of student three-dimensional (3D) computer-aided design (CAD) models. The driving idea was conceptualized under the restraints of the COVID pandemic, driven by the problem of evaluating a large number of student 3D CAD models. The described computer solution can be implemented using any CAD computer application that supports customization. Test cases showed that the proposed solution was valid and could be used to evaluate many students’ 3D CAD models. The computer solution can also be used to help students to better unders

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Qiao, Hu, Xufan Wang, Zihao Wang, Liang Wang, and Ying Xiang. "Common Structure Mining of 3D Model Assembly Model Based on Frequent Subgraphs." Scientific Programming 2022 (July 19, 2022): 1–17. http://dx.doi.org/10.1155/2022/6829386.

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As an important data source of complex product design and manufacturing, 3D assembly model has accumulated a large number of 3D assembly models in various manufacturing industries under the background of widely used digital design technology. In order to make better use of reusable common structure information about 3D assembly model, reduce repetitive labor, and shorten product development cycles, a common structure mining method of 3D assembly models was proposed. Firstly, based on the attribute neighbourhood diagram of individual parts of the 3D assembly model, the information of the assemb

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Fan, Jun. "Computer Data Structure for Geological Entities Modelling Based on OO-Solid Model." Advanced Materials Research 383-390 (November 2011): 2484–91. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2484.

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In the long evolution of the earth formation often form a complex geological structure, modeling for these complex geological entities (such as thinning-out, bifurcation, reverse, etc.) still require in-depth 3D modeling study. Because of discontinuity, complexity and uncertainty of distribution of 3D geo-objects, some models only are suitable for regular, continuous and relatively simple spatial objects, and some are suitable for discontinue, complex and uncertain geo-objects, but some improvements on these models, such as, updating of model, maintenance of topological and seamless integratio

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Cai, Ying, Menglong Yang, and Ziqiang Li. "Robust Head Pose Estimation Using a 3D Morphable Model." Mathematical Problems in Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/678973.

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Head pose estimation from single 2D images has been considered as an important and challenging research task in computer vision. This paper presents a novel head pose estimation method which utilizes the shape model of the Basel face model and five fiducial points in faces. It adjusts shape deformation according to Laplace distribution to afford the shape variation across different persons. A new matching method based on PSO (particle swarm optimization) algorithm is applied both to reduce the time cost of shape reconstruction and to achieve higher accuracy than traditional optimization method

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PEREZ, ALAIN. "A PHYSICAL MODEL OF THE WRIST DYNAMICS." Journal of Biological Systems 03, no. 04 (1995): 1245–55. http://dx.doi.org/10.1142/s0218339095001106.

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The wrist articulation represents one of the most complex mechanical system of the human body. It is composed of eight bones rolling and sliding along their surface and along the faces of the five metacarpals of the hand and the two bones of the arm. The wrist dynamics is however fundamental for the hand movement, but it is so complex that it still remains incompletely explored. This work is part of a new concept of Computer Assisted Surgery, which consists in developing computer models to perfect surgery acts by predicting their consequences. The physical wrist dynamics model is based first o

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Liang, Jianming, Jianhua Gong, Xiuping Xie, and Jun Sun. "Solar3D: An Open-Source Tool for Estimating Solar Radiation in Urban Environments." ISPRS International Journal of Geo-Information 9, no. 9 (2020): 524. http://dx.doi.org/10.3390/ijgi9090524.

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Solar3D is an open-source software application designed to interactively calculate solar irradiation on three-dimensional (3D) surfaces in a virtual environment constructed with combinations of 3D-city models, digital elevation models (DEMs), digital surface models (DSMs) and feature layers. The GRASS GIS r.sun solar radiation model computes solar irradiation based on two-dimensional (2D) raster maps for a given day, latitude, surface and atmospheric conditions. With the increasing availability of 3D-city models and demand for solar energy, there is an urgent need for better tools to computes

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Ye, Zilin. "Application of Improved Deep Belief Network Model in 3D Art Design." Mathematical Problems in Engineering 2022 (April 5, 2022): 1–9. http://dx.doi.org/10.1155/2022/2213561.

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In recent years, driven by the high-speed computing performance of computers and massive data on the Internet, deep nervine networks with highly abstract feature extraction and classification capabilities have been widely used in 3D art design and other fields, and a large number of breakthrough results have emerged. 3D art design is a research hotspot in the field of computer vision, which has broad application prospects and practical application value. Aiming at the problems of slow convergence and long training time of traditional deep belief network in the process of data feature expressio

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Zhou, Mingquan, Qingsong Huo, Guohua Geng, and Xiaojing Liu. "A New 3D Model Retrieval Method with Building Blocks." International Journal of Computer Games Technology 2009 (2009): 1–6. http://dx.doi.org/10.1155/2009/572030.

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As the numbers of 3D models available grow in many application fields, there is an increasing need for a search method to help people find them. Unfortunately, traditional search techniques are not always effective for 3D data. In this paper, we describe a novel method of interactive 3D model retrieval with building blocks. First, by using a cube block as the baseblock in a 3D virtual space, we may construct the query model with human-computer interaction method. Then through retrieving the polygon model of the database generated by the voxel model, we may get retrieval results in real time. E

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Bai, Jing, Mengjie Wang, and Dexin Kong. "Deep Common Semantic Space Embedding for Sketch-Based 3D Model Retrieval." Entropy 21, no. 4 (2019): 369. http://dx.doi.org/10.3390/e21040369.

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Sketch-based 3D model retrieval has become an important research topic in many applications, such as computer graphics and computer-aided design. Although sketches and 3D models have huge interdomain visual perception discrepancies, and sketches of the same object have remarkable intradomain visual perception diversity, the 3D models and sketches of the same class share common semantic content. Motivated by these findings, we propose a novel approach for sketch-based 3D model retrieval by constructing a deep common semantic space embedding using triplet network. First, a common data space is c

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Dadi, Gabriel B., Timothy R. B. Taylor, Paul M. Goodrum, and William F. Maloney. "Performance of 3D computers and 3D printed models as a fundamental means for spatial engineering information visualization." Canadian Journal of Civil Engineering 41, no. 10 (2014): 869–77. http://dx.doi.org/10.1139/cjce-2014-0019.

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Engineering information delivery can be a source of inefficient communication of design, leading to construction rework and lower worker morale. Due to errors, omissions, and misinterpretations, there remains a great opportunity to improve the traditional documentation of engineering information that craft professionals use to complete their work. Historically, physical three dimensional (3D) models built by hand provided 3D physical representations of the project to assist in sequencing, visualization, and planning of critical construction activities. This practice has greatly diminished sinc

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Yue, Xue Jun, Tian Sheng Hong, Xing Xu, and Wei Bin Wu. "Study on 3D Virtual Reality Modeling." Advanced Materials Research 129-131 (August 2010): 1296–300. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.1296.

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We build out a very vivid and real conditions environment based on the virtual reality of a simulation computer technology, so that users can be in a virtual environment through the man-machine interface with a virtual environment direct interaction. This paper studies 3d virtual model development and integration including the system design to realize the functions and systems integration. In its implementation, we use the model tool, 3 D R C to structure three-dimensional model, and the model tool, and finally we use virtools tool to achieve a three-dimensional with the establishment of virtu

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Choi, Suyeon, Manu Gopakumar, Yifan Peng, Jonghyun Kim, and Gordon Wetzstein. "Neural 3D holography." ACM Transactions on Graphics 40, no. 6 (2021): 1–12. http://dx.doi.org/10.1145/3478513.3480542.

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Holographic near-eye displays promise unprecedented capabilities for virtual and augmented reality (VR/AR) systems. The image quality achieved by current holographic displays, however, is limited by the wave propagation models used to simulate the physical optics. We propose a neural network-parameterized plane-to-multiplane wave propagation model that closes the gap between physics and simulation. Our model is automatically trained using camera feedback and it outperforms related techniques in 2D plane-to-plane settings by a large margin. Moreover, it is the first network-parameterized model

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Utenov, М. U., D. K. Baltabay, Zh T. Rahim, and C. Zh Batyrbek. "Computer 3d modeling of manipulators in the Maple software environment." Bulletin of the National Engineering Academy of the Republic of Kazakhstan 86, no. 4 (2022): 109–15. http://dx.doi.org/10.47533/2020.1606-146x.201.

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The creation of a 3D model of any robotic systems has become widespread in the last few years and is used both for educational and research purposes, where work with a visual image of an object in three-dimensional space is required. Currently, there are many 3D modeling environments available for various fields of robotics research with some advantages and limitations. Computer 3D modeling of spatial manipulators and their movements with a visual image of the object allows you to visually observe the results when studying its kinematic, dynamic, power, control and other aspects. In this paper

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Bąkowski, Henryk, Damian Hadryś, and Antoni John. "Analysis of a 3D model obtained from a computer microtomograph in a CAE environment." Mechanik, no. 1 (January 2019): 49–51. http://dx.doi.org/10.17814/mechanik.2019.1.9.

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Dobrzański, L. A., A. D. Dobrzańska-Danikiewicz, P. Malara, T. G. Gaweł, L. B. Dobrzański, and A. Achtelik-Franczak. "Fabrication Of Scaffolds From Ti6Al4V Powders Using The Computer Aided Laser Method." Archives of Metallurgy and Materials 60, no. 2 (2015): 1065–70. http://dx.doi.org/10.1515/amm-2015-0260.

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AbstractThe aim of the research, the results of which are presented in the paper, is to fabricate, by Selective Laser Melting (SLM), a metallic scaffold with Ti6Al4V powder based on a virtual model corresponding to the actual loss of a patient’s craniofacial bone. A plaster cast was made for a patient with a palate recess, and the cast was then scanned with a 3D scanner to create a virtual 3D model of a palate recess, according to which a 3D model of a solid implant was created using specialist software. The virtual 3D solid implant model was converted into a 3D porous implant model after desi

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Soleman, Jehuda, Florian Thieringer, Joerg Beinemann, Christoph Kunz, and Raphael Guzman. "Computer-assisted virtual planning and surgical template fabrication for frontoorbital advancement." Neurosurgical Focus 38, no. 5 (2015): E5. http://dx.doi.org/10.3171/2015.3.focus14852.

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OBJECT The authors describe a novel technique using computer-assisted design (CAD) and computed-assisted manufacturing (CAM) for the fabrication of individualized 3D printed surgical templates for frontoorbital advancement surgery. METHODS Two patients underwent frontoorbital advancement surgery for unilateral coronal synostosis. Virtual surgical planning (SurgiCase-CMF, version 5.0, Materialise) was done by virtual mirroring techniques and superposition of an age-matched normative 3D pediatric skull model. Based on these measurements, surgical templates were fabricated using a 3D printer. Bif

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Zhao, Zheng Fa. "Hand Sketching in 3D Computer Animation Model Rendering and Editing." Advanced Materials Research 690-693 (May 2013): 2742–45. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2742.

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With The high development of science and technology, computer hardware and auxiliary technologies have a major influence on 3D animation; As for hand-painted interactively assistive technology, which also should be applied to 3D animation combined with better elements of science and technology. Hand sketching gathers the advantage of pen-paper and computer so that the model rendering will be more quickly, at the same time, to get the efficiency of editing more grid details and provide a basis for creating the internal structure and local details of the complex model; to improve the model quali

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Wu, Shi Lin, and Xiang Yan Liu. "VC and ACIS/HOOPS Based Semi-Physical Virtual Prototype Design and Motion Simulation of 3D Printer." Applied Mechanics and Materials 437 (October 2013): 267–70. http://dx.doi.org/10.4028/www.scientific.net/amm.437.267.

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3D Printing is a widely used manufacturing method whose processing speed is very fast. This method is suitable for a variety of complex geometric structure in many application fields, and supports a variety of material types. At present, 3D printer is not only used in manufacturing, but also began to be used in education, architecture, design industries and so on. However, at home, there are less 3D printer manufacturers most of which are universities and research institutions, and price of 3D printer is relatively expensive. After analyzing how 3D printer works, this paper built 3D model of 3

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Duc-Tien Dang-Nguyen, Giulia Boato, and Francesco G. B. De Natale. "3D-Model-Based Video Analysis for Computer Generated Faces Identification." IEEE Transactions on Information Forensics and Security 10, no. 8 (2015): 1752–63. http://dx.doi.org/10.1109/tifs.2015.2427778.

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