Three-dimensional Modeling Technology Research Articles

Functional optimization of the design of adaptive furniture to improve the accessibility and comfort of people with impaired musculosical system

In today's world, there is a growing need to create an inclusive environment that meets the needs of people with limited mobility. This applies not only to architecture and public spaces at the level of macro- and meso-ergonomics, but also to adaptive furniture at the level of micro-ergonomics. The study is devoted to the formalization of a number of requirements for the modeling of adaptive furniture for people with musculoskeletal disorders. Particular attention is paid to aspects in the development of furniture that not only provide comfort, safety and functionality, but also represent an aesthetically pleasing design that contributes to the integration of ASPA into the social environment. Ergonomic requirements are considered, taking into account the anthropometric and biomechanical features of such users with the help of digital models (DHM). Using DHM, you can study the interaction of users with furniture, simulate different scenarios of their use, and evaluate the parameters of the quality of comfort and safety. It has been established that the integration of DHM with modern three-dimensional modeling technologies allows optimizing furniture designs, making them maximally adapted to the needs of ASPA. The purpose of the study is to develop a methodology for designing adaptive furniture, which ensures an increase in the standard of living of users thanks to individually configured ergonomic. In order for ASPAs to be able to work comfortably and productively, the projected development of the interpenetration of modern technical innovations in this field with the subsequent unification in a separate direction of designing inclusive furniture and equipment, with the division into separate groups for different types of disabilities, becomes quite relevant.

Study on the Application of Finite Difference in Geological Mine Fault Groups: A Case Study

Fault structures can cause a bad mining environment and increase the stress of surrounding coal pillar faults. The study investigates the stress evolution characteristics within fault structure groups and their surrounding coal pillars and explores the extent to which these fault structure groups influence the stress distribution in coal pillars. Based on three-dimensional modeling technology, a transparent geological model of the geological environment of fault structure groups was constructed and finite difference software was used to generate a numerical simulation model. Two survey lines and four survey points were arranged to analyze the stress distribution of a coal pillar fault. The results show that the fault structure groups have obvious stress barrier effects. There is a 35 m stress reduction zone in the hanging wall of the fault and a 30 m stress increase zone in the footwall of the fault. Both FL-1 and FL-3 faults have a stress barrier effect in the hanging wall. The obvious stress increases in the footwall of the fault are 37.7 MPa and 33.5 MPa, respectively. The stress of the FL-2 fault as a whole appears to be a more obvious superposition at the end of mining, and the peak stress reaches 41.5 MPa.

Establishing a Resident-Driven Three-Dimensional Printing Lab Within an Academic Institution

Background: Three-dimensional (3D) modeling and printing technologies have been increasingly used throughout healthcare for research, educational, and clinical purposes. Despite the benefits associated with their use in surgical training, the literature poorly outlines the value of establishing an in-house, resident-driven 3D printing lab. Herein, we outline our quantifiable experience with our 3D printing lab and outline all necessary components needed to establish a lab such that the reader can replicate our experience at their institution. Additionally, we outline the process of creating a 3D-printed model from patient imaging with supplementary tutorial videos. Methods: A retrospective review of all 3D-printed models created in our in-house 3D printing lab since its creation in 2022 was performed. 3D-printed models that were utilized for formal educational or clinical purposes were included in this study. All 3D-printed models were created using the Raise3D 2 Pro. Cost estimates associated with each print were collected from the printer’s cost estimation function. Results: A total of 14 3D-printed models met the inclusion criteria for our study. Of these, 4 (28.6%) were utilized for patient and/or resident education with the remaining 10 (71.4%) being used in patient care. By and large, the average cost of educational 3D-printed models was greater than clinical models ($12.00 vs $1.50, respectively). Ten 3D-printed models of mandibular fractures were successfully used to pre-bend plates prior to reconstructive surgery, and minimal intraoperative adjustment of the plate was required for each case. The processes of establishing a 3D printing lab along with creating a 3D-printed model from patient imaging are outlined. Conclusion: Establishing a 3D printing lab is an attainable feat for most institutions. High-value clinical and educational tools can be created for a reasonable price once the initial overhead costs of establishing a lab are covered.

Bionic design of knitted fabrics for ice and snow sports

The extreme environment of winter sports significantly impacts the performance of athletes, leading to a need for clothing that meets composite functional requirements such as warmth, comfort, and protection to improve competition performance. Knitted fabrics for ice and snow sports with excellent heat and moisture performance were inspired by the water collection and transmission system used by the Moloch horridus. A bionic design model of multi-state fabric morphology was developed by using a topological derivation method and three-dimensional parametric surface modeling technology. The experimental results showed that the four single-sided three-dimensional fabrics have better moisture management characteristics and it is possible to achieve an excellent thermal insulation performance. The textile design application models based on this new design method can provide a feasible solution for developing high-performance textiles for winter sports.

Patient-Specific Implant Customization for Treatment of Internal Orbital Fractures Using Office-Based Three-Dimensional Printing

Objective: Three-dimensional (3D) modeling technology aids the reconstructive surgeon in designing and tailoring individualized implants for the reconstruction of complex craniofacial fractures. Three-dimensional modeling and printing have traditionally been outsourced to commercial vendors but can now be incorporated into both private and academic craniomaxillofacial practices. The goal of this report is to present a low-cost, standardized office-based workflow for restoring bony orbital volume in traumatic orbital fractures. Methods: Patients with internal orbital fractures requiring open repair were identified. After the virtual 3D models were created by iPlan 3.0 Cranial CMF software (Brainlab), the models were printed using an office-based 3D printer to shape and modify orbital plates to correctly fit the fracture defect. The accuracy of the anatomic reduction and the restored bony orbital volume measurements were determined using postoperative computed tomography images and iPlan software. Results: Nine patients fulfilled the inclusion criteria: 8 patients had unilateral fractures and 1 patient had bilateral fractures. Average image processing and print time were 1.5 hours and 3 hours, respectively. The cost of the 3D printer was $2500 and the average material cost to print a single orbital model was $2. When compared with the uninjured side, the mean preoperative orbital volume increase and percent difference were 2.7 ± 1.3 mL and 10.9 ± 5.3%, respectively. Postoperative absolute volume and percent volume difference between the orbits were −0.2 ± 0.4 mL and −0.8 ± 1.7%, respectively. Conclusions: Office-based 3D printing can be routinely used in the repair of internal orbital fractures in an efficient and cost-effective manner to design the implant with satisfactory patient outcomes.

Exploration of Virtual Reality Technology Enabling Diversified Teaching Models of Civics and Politics

Abstract The wide application of virtual reality technology has brought opportunities for teaching ideology and politics, breaking traditional education’s time and space limitations. This paper proposes an automatic three-dimensional modeling technology model, combined with computer vision camera imaging principles, to optimize the amount of data and improve optimization efficiency. And on this basis, it further proposes the Civics virtual scene construction technology, combined with the improved QEM grid simplification algorithm of edge segmentation, to optimize the virtual scene by simplifying the complex three-dimensional grid model. The experimental group’s students have shown good acceptance of this teaching method when teaching Civics in VR venues. In the cognitive and knowledge level of Civics learning, there is a significant difference between the experimental group and the control group in the dimensions of value identity and knowledge retention (P<0.05), and the mean value in the dimension of value identity is as high as 4.55, which is a very significant difference from the control class (P<0.01). And in the experiential feedback of Civics learning, the students in the experimental group have a greater sense of scene realism than the students in the control group (P<0.01), a stronger sense of realism of the interactive experience in learning (P<0.05), a higher degree of concentration in learning (P<0.01), and a more minor degree of interference by the external environment (P<0.01).

Study on the Digital Reassembly of Yoni Monument Excavated from Cella of Hong Nang Sida, Lao PDR

During the dismantling of the cella of the Hong Nang Sida temple in Laos, 100 highly significant Yoni-monument members were recovered as fragmented individual stones. To restore the Hong Nang Sida temple to its former glory, it is necessary to restore the fragmented Yoni-monument members to their original positions. However, the high weight and low mobility of the stones make it difficult to physically reassemble the story members. Therefore, this study utilized three-dimensional (3D) scanning, modeling, and printing technologies to digitally reassemble the Yoni monument. To achieve this goal, optimization modeling was performed to connect the three-dimensional (3D) scanning data of individual fragmented stones, after which each story member was reduced to a 1/5 of its original size and printed by sand printing to evaluate the feasibility of physical assembly. Finally, 3D scans of the Yoni monument assembled using the sand-printing outputs were taken, and all the story members were virtually aligned based on the scan data to complete the digital reassembly. We believe that the results of this study will improve the feasibility and completeness of the physical reassembly by allowing for a full preliminary examination of stone blocks, which would otherwise be difficult to achieve because of the risk of secondary damage or weight limitation. In particular, it is possible to objectively and visually illustrate the geometric relationship between the members of each story, which can be extended to similar stone-based cultural heritage sites. To broaden the utility of the digital-reassembly model, it must be evolved into a historic building information model that links the unstructured data, including documents, photos, and images, obtained throughout the process life cycle.

Review of Three-Dimensional Model Simplification Algorithms Based on Quadric Error Metrics and Bibliometric Analysis by Knowledge Map

With the rapid advancement of computer graphics and three-dimensional modeling technology, the processing and optimization of three-dimensional (3D) models have become contentious research topics. In the context of mobile devices or web applications, situations may arise where it becomes necessary to load a 3D model with a substantial memory footprint in real-time or dynamically adjust the level of detail of a model based on the scene’s proximity. In such cases, it is imperative to optimize the original model to ensure smoothness and responsiveness. Due to the simplicity of their algorithm, quadric error metrics (QEMs) can deliver excellent results in simplifying 3D models while maintaining high efficiency. Therefore, QEM is widely employed in engineering applications within the realm of computer graphics development. Moreover, in the pursuit of enhanced quality and efficiency, numerous scholars have improved it based on QEM algorithms. This study aims to provide a systematic review and summary of the principles and applications of current research on QEM algorithms. First, we conducted a bibliometric analysis of 128 studies in related fields spanning from 1998 to 2022 using CiteSpace. This allowed us to sort QEM algorithms and gain insights into their development status and emerging trends. Second, we delve into the fundamental principles and optimizations of the QEM algorithms to provide a deeper understanding of their implementation process. Following that, we explore the advantages and limitations of the QEM algorithms in practical applications and analyze their potential in various domains, including virtual reality and game development. Finally, this study outlines future research directions, which encompass the development of more efficient error metric calculation methods, the exploration of adaptive simplification strategies, and the investigation of potential synergies with deep learning technologies. Current research primarily centers on enhancing QEM algorithms by incorporating additional geometric constraints to better differentiate between flat and irregular areas. This enables a more accurate determination of the areas that should be prioritized for folding. Nevertheless, it is important to note that these improvements may come at the cost of reduced computational efficiency. Therefore, future research directions could involve exploring parallel computing techniques and utilizing GPUs to enhance computational efficiency.

Research and Effectiveness Analysis of Innovative Teaching Models of Physical Education in Colleges and Universities under Convergent Network Architecture

Abstract In order to realize the innovation of sports teaching mode, this paper first combines the motion capture technology and three-dimensional modeling technology, based on the objectives and theories of sports teaching in colleges and universities, and constructs a college sports auxiliary teaching system under the fusion network architecture. Then, the three-dimensional modeling of sports action, the extraction of key sports action features, and the use of generalized discriminant analysis and hierarchical SVM construction method for the degradation and classification, respectively, to achieve the recognition of the sport in sports teaching. Finally, the effectiveness of the system and teaching model was tested and evaluated through the use of Loadrunner and SPSS software. The results show that the response time is 2s when the number of concurrent users is 100, the utilization rate of CPU is 64.2%, and the mastery of sports knowledge and movement skills of the experimental class is higher than that of the control class by 0.18 and 0.26, respectively. The innovative teaching mode of physical education in this study is effective.

FORMATION OF ANALYTICAL AND SPATIAL THINKING OF STUDENTS IN THE PROCESS OF STUDYING THREE-DIMENSIONAL MODELING TECHNOLOGIES

In the article, we considered the problem of forming analytical and spatial thinking of students during the study of three-dimensional modeling technologies, in particular, in the course "Informatics". Modeling makes it possible to develop thinking, inclu

Development and Application of 3D Modeling in Game

The development and progress of computer graphics and 3D modeling technology play an important role in the development of 3D game animation. Three-dimensional modeling technology combines artistic design and computer technology perfectly with a real sense of depth, so it has been widely used in the game industry. This paper introduces the development process of 3D modeling technology and the application of 3D modeling technology in games. At the same time, it gives suggestions on the problems existing in the application of 3D modeling technology in games, as well as researches and looks forward to the development trend of 3D modeling technology.

Application of Spatial Data in Three-dimensional Computer Graphics

Digital three-dimensional modeling technologies are actively developing in all areas of industry and business. Three-dimensional models allow you to get visual information about complex objects, phenomena, processes and technical systems, and the scale of modeling can reach entire cities or enterprises. Because, when modeling the environment (cities, enterprises, complex technical systems), there is a spatial component, and there is a tendency to integrate technologies from different areas within one 3D model. Thus, within the framework of this article, the mechanism of using spatial data in the framework of computer graphics applications is considered. The main areas of application of three-dimensional modeling technologies and the trends of their further development are considered in detail. The main terms and definitions that underlie geoinformation technologies that allow processing spatial data are given. Using the example of computer graphics Blender, an example of the use of spatial data for the construction of terrain is given.

Application of 3D modeling in power engineering survey and design

In the rapid development of social economy and science and technology, digital three-dimensional modeling technology has been widely used in machinery, architecture, planning and other fields. Especially in the era of big data, computer aided design software in power design began to innovate in the direction of 3D and digitalization. In order to keep up with the design requirements of the international market, Chinese scholars begin to focus on how to apply 3D modeling technology in the survey and design of electric power engineering, master the basic structure and operation characteristics of the digital 3D design software, and provide effective technical support for the survey and design of electric power engineering in the new era. Therefore, after understanding the unique advantages of digital 3D modeling technology, this paper takes 110kV overhead line in a certain area as an example to focus on the application of 3D modeling in power engineering survey and design, and then defines the development direction of 3D modeling software technology in the new era, so as to gradually replace the traditional power engineering design means.

Using Three- Dimensional Modeling Techniques in Digital Preservation of Urban Plans for the Old Walled City of Shibam Hadramawt

Historic cities have great importance in our time because they represent a cultural, social and urban wealth for societies, where historical cities gain their importance through the values ​​and principles that are reflected on the reality of the city, its personality, its social and topographic components, its planning and urban form. The traditional methods and paths of preservation have taken long periods of time and have been affected by the political and economic situation of the country which until our current situation, still living a period of instability. The study object is to create a vision for a preservation digital platform of the historical city of Shibam, Hadramout using 3D modeling techniques. The study importance is that using 3D modeling techniques and a set of metadata associated with each graphic object of historical urban elements would help in digital preservation. The research followed the descriptive inductive approach in studying the theoretical concepts and the practical approach in creating the digital platform for the three-dimensional modeling technologies.

Analysis of Maintenance Techniques for a Three-Dimensional Digital Twin-Based Railway Facility with Tunnels

In accordance with the paradigm of the 4th and Industrial Revolution, the introduction of building information modeling is expected in all areas related to railroad construction, operation and management, along with the establishment of a metaverse platform that combines big data, the Internet of Things, and artificial intelligence. The performance of tasks related to the safety and maintenance of railway facilities is aided by the use of digital systems free from physical and temporal constraints. Three-dimensional (3D) modeling and other 4th industrial technologies, such as unmanned aerial vehicles (UAVs) and light detection and ranging (LiDAR), are increasingly implemented in many types of infrastructure. With respect to railroads, the use of these methods to monitor tunnel spaces has been hindered by the limitations of modeling with UAV and inadequate Global Positioning System reception. Here, we conducted the domestic application of 4th industrial technologies to a railway tunnel; we addressed these problems using a BLK360, a fixed LiDAR device that combines two-dimensional panoramic images and a 3D point cloud method. The outcomes of this research will benefit railway operation managers by providing a platform combining a two-dimensional panoramic virtual reality (VR) image and a 3D model developed from a 3D scan framework for the maintenance of existing railway facilities (tunnels). Our approach was optimized for the maintenance and operational management of railroad facilities, as demonstrated for tunnels, because it continuously acquires time-series data that is appropriate for the maintenance of the corresponding space. In the future, this approach can be used for test tracks and operational lines.

A controllable thoracolumbar external fixation brace

Based on the theoretical basis of "dynamic and static combination" in traditional Chinese medicine, a controllable thoracolumbar external fixation brace was developed. Using new photosensitive resin materials, combined with three-dimensional modeling technology and 3D printing technology, a controllable thoracolumbar external fixation brace was designed and developed. In this study, the new adjustable thoracolumbar spine brace can fix and support the body to assist in restoring the biomechanical stability of the spine, and has a better therapeutic effect on shortening the bed treatment time of patients with thoracic and lumbar compression fractures.

Transforming homestay guest experience with AI-powered design tools

Artificial Intelligence (AI) is playing a very significant and prominent role in product development as per consumer requirements. It can provide valuable tools and equipment and assist designers in their work. Homestay design is a service sector component with regional and cultural overtones. Therefore, this study aims to analyze the design and production of homestays through AI in order to raise the standards of homestay establishments and encourage the growth of rural tourism. Exploratory Factor Analysis (EFA) is used to search for factors mainly responsible for designing any homestay establishment based on geographical location and local culture. Then confirmatory factor analysis (CFA) was applied to confirm how the explored factors are related and affect the homestay design through the structural model. According to the survey findings, visitors are more interested in the floor plan, type, and essence of homestays. The research and analysis in this paper found that people prefer the room layout and style of homestays, so when designing a homestay, it uses three-dimensional modeling technology to simulate the room layout and homestay style.

Research on Digital Protection Technology of Based on Virtual Reality

VR technology is a simulation of the virtual world. Users receive and respond to various sensory stimuli provided by the virtual environment with the help of special output and input devices, and interact with people and objects in the virtual world in a natural way to create an immersive feeling. Based on the virtual reality technology, the tourism intangible cultural heritage that has disappeared can be reproduced in front of people. Three technologies are specifically used. First, the three-dimensional modeling technology makes the real scene virtual reappearance, and produces a fully real three-dimensional effect. Second, three-dimensional panorama technology, which uses panoramic images to represent three-dimensional virtual environment, makes the picture effect more realistic. Third, human-computer interaction technology. After adding the somatosensory device, you can get an almost real interaction experience.

New Paths for the Development of National Sports Intangible Cultural Heritage Based on Computer Nonlinear 3D Model Modeling Technology from the Perspective of Scene Theory

Purpose. The AI era has brought rapid progress and many changes in life, which challenge the survival of cultural heritage. One of the topics that has attracted much attention at the moment is how to better inherit and develop the intangible cultural heritage of national sports. In order to improve the development level of national sports intangible cultural heritage, this article explores a new path for its development. Methodology. Through the analysis and research of scene theory and computer nonlinear three-dimensional (3D) model modeling technology, it can be applied to the development of national sports intangible cultural heritage. This article analyzes the scene theory, three-dimensional modeling, and intangible cultural heritage of national sports, conducts experimental analysis on its functions, and uses relevant theoretical formulas to explain. Research Findings. The results show that this development path is more effective than the traditional development path. It has a lower error rate than the traditional model, which differs by 0.124. The public satisfaction increased by 56.7% before and after. Research Implications: The new method proposed in this article provides a new path reference for the development of national sports intangible cultural heritage in the future. Practical Implications. This method can meet the needs of the development of intangible cultural heritage of national sports culture, and the satisfaction and development level of the masses have been greatly improved.

3D Modeling Technology of Mobile Big Data Application in the Electric Vehicle Condition Monitoring System

In recent years, the modern information society has entered the era of big data. Big data has rapidly developed into a popular category favored by academia and industry and has been widely used. This paper is aimed at studying the application of the 3D modeling technology of mobile big data to the monitoring of the state of electric vehicles. It proposes related concepts of big data algorithm and 3D modeling technology, introduces the trajectory matching algorithm based on mobile big data, and finally introduces the related concepts of electric vehicles and the design of the big data analysis platform for condition monitoring of substation equipment. On the basis of discussing the application of the three-dimensional modeling technology of mobile big data in the electric vehicle condition monitoring system, the experimental research was carried out with the big data in the condition monitoring of the intelligent substation. The experimental results of this paper showed that the storage overhead of the NJLS model was reduced by 34% to 40% compared with the conventional star schema, which could reduce the space overhead.