3D Virtual Scene Research Articles

A method to integrate hydraulic structure models into 3D terrain models for irrigation infrastructure visualization

Seamless integration of three-dimensional (3D) terrain models and hydraulic structure models is a technical challenge in the construction of 3D virtual scenes for irrigation areas. This study proposes a level-of-detail (LOD)-based dynamic classification integration method for hydraulic structure models and 3D terrain models, called CM-D-LOD. Hydraulic structures are classified according to their point, line, and surface morphologies, as well as their dependence on or independence of the terrain into four categories: point-like hydraulic structures independent of terrain, line-like hydraulic structures dependent on terrain, surface-like hydraulic structures dependent on terrain, and surface-like hydraulic structures independent of terrain. By utilizing the proposed model classification integration method, a visualization management platform for virtual geographical environments of irrigation areas is developed, and experiments are conducted in the Zhuluo Ba Irrigation Area within the large economic zone along China’s eastern coast. Results demonstrate that the integration accuracy can be controlled between 0.2 and 0.7 m and that the 3D virtual scene of the irrigation area can be updated in real time. The proposed classification integration method transforms the traditional global model integration approach into a more efficient one, significantly improving the efficiency of constructing virtual geographical scenes for irrigation areas.

Research on the design and application of 3D scene animation game entertainment system based on user motion sensing participation

Developed a 3D indoor virtual scene assembly system based on dual touch screen. The system adopts a combination of 2D views and 3D views. The 2D and 3D views are displayed on the two touch screens. We have comprehensively designed various interactive operations of 2D view and 3D view from the perspectives of simplicity, easy learning and easy to use, and reduced the complex 3D interactive operations to 2D interactive operations. Users can conduct two-dimensional interactive operation and 3D interactive operation based on two display screens, which can realize the efficient assembly of 3D virtual scene. The results indicate significant differences in the number of modifications of mode A and B (t = 2.982, p = 0.006 < 0.01), effective design time (t = 4.990, p < 0.001), first design satisfaction (t = 5.074, p = <0.001) and final design satisfaction (t = 2.787, p = 0.010 < 0.05). Participants in mode A had fewer modifications and shorter effective design times compared to mode B. Study and design a new workbench supporting the collaborative design of 3D virtual scenes. The workbench can support a three-dimensional indoor virtual scene assembly system based on dual touch screen, and designers and users can assemble the virtual scene together. The workbench mainly consists of two touch displays and a holographic display device. The holographic display device displays the three-dimensional scene designed by the user in real time, and supports the designer and the user to operate the three-dimensional scene through the touch film attached to it. Touch display enables designers and users to assemble scenes on 2D views through simple touch operations such as drag and drop. The face-to-face collaborative design method provided by the workbench is more conducive to the communication between designers and users, so as to improve the design efficiency of 3D scenes.

Diversity of 3D APAR and LAI dynamics in broadleaf and coniferous forests: Implications for the interpretation of remote sensing-based products

Forests substantially mediate the water and carbon dioxide exchanges between terrestrial ecosystems and the atmosphere. The rate of this exchange, including evapotranspiration (ET) and gross primary production (GPP), depends mainly on the underlying vegetation type, health state, and the composition of abiotic environmental drivers. However, the complex 3D structure of forest canopies and the inherent top-view perspective of optical and thermal remote sensing complicate remote sensing-based retrievals of biotic and abiotic factors that eventually determine ET and GPP. This study investigates the sensitivity of remote sensing approaches to 3D variation of abiotic and biotic environmental drivers. We use 3D virtual scenes of two structurally different Swiss forests and the radiative transfer model DART to simulate the 3D distribution of solar irradiance and reflected radiance in the forest canopy. These simulations, in combination with LiDAR data, are used to derive the absorbed photosynthetic active radiation (APAR) and the leaf area index (LAI) in 3D space. The 3D variation of both parameters was quantified and analyzed. We then simulated images of the top-of-canopy bi-directional reflectance factor (BRF) and compared them with the hemispheric-conical reflectance factor (HCRF) data derived from HyPlant airborne imaging spectrometer measurements. The simulated BRF data was used to derive APAR and LAI, and the results were compared to their respective 3D representations. We unravel considerable spatial differences between both representations. We discuss possible reasons for the disagreement, including a potential insensitivity of the inherent top-of-canopy view for the real 3D product dynamics and limitations of the processing of remote sensing data, especially the approximation of effective surface irradiance. Our results can help understanding sources of uncertainties in remote sensing based gas exchange products and defining mitigation strategies.

Balance of authenticity and artistry in TV drama scene design in the context of digital media

Abstract With the development of digital media technology, TV drama scene design increasingly emphasizes authenticity and artistry, and explores how to enhance the visual effect and emotional expression of TV dramas through 3D modeling and advanced image processing techniques. ASIS network is utilized for 3D modeling and semantic segmentation of scenes to improve scene design’s realism and artistic expression through meticulous model construction and precise image processing techniques. The study employs the regional iterative nearest-point alignment and light intensity polarization correction methods for 3D reconstruction and virtual scene rendering of live TV drama scenes to achieve highly realistic visual effects. The results show that the integrity error of this research method in scene reconstruction is 0.325, the accuracy error is 0.294, and the reconstruction wholeness is 0.289, which is an obvious advantage compared with the traditional methods. In addition, this paper also explores the semantic segmentation and reconstruction parallax value of scene design to verify the method’s effectiveness. The scene design of TV drama combined with modern digital technology can effectively balance authenticity and artistry, and provide a richer and more realistic visual experience for TV drama.

The Utilization of Virtual Reality Technology in the Scientific and Technological Protection and Cultural Inheritance of Clarke Porcelain--Taking Clarke Porcelain in the Collection of the City University of Macau as an Example

Abstract Virtual Reality (VR) technology heralds a transformative era for the safeguarding and disseminating cultural heritage. This paper examines its application through the lens of the Clark Porcelain collection at the City University of Macau, highlighting VR’s pivotal role in the scientific preservation and cultural transmission of these artifacts. By delving into the ornamental intricacies of Clark Porcelain, we evaluate VR’s effectiveness in protecting and showcasing these treasures. The study employs advanced techniques, including 3D virtual scene modeling, texture mapping, and collision detection, to replicate a museum setting, thus elevating the user’s interactive experience. An audience satisfaction survey indicates positive feedback, with relaxation and aesthetic satisfaction scores averaging 4.65 and 4.53, respectively. Moreover, ANOVA results reveal significant technological acceptance disparities across age groups. The Analysis further underscores VR’s substantial impact on cultural heritage promotion, noting the potential for better integration of Clark Porcelain with contemporary technologies. Virtual reality emerges as a formidable tool in the scientific conservation and cultural legacy of Clark Porcelain, offering fresh insights and technical backing for the modernization of traditional cultural heritage preservation.

Research on the optimization of interior design of architectural space considering user perception

Abstract This paper integrates the concept of user perception into the presentation of architectural interior spaces. It posits that by employing virtual presentation modes, interior design products are fully demonstrated to users, enhancing their perception of the available information and thereby facilitating the optimization of interior design. The research systematically extracts the influencing factors of user perception by conducting a thorough analysis and synthesis of the literature pertinent to architectural interiors. Additionally, this study combines findings from a questionnaire survey with methods of correlation and regression analysis to further substantiate the identified factors influencing user perception. On this basis, combined with the establishment of a refined model based on real data sources and an indoor modeling method based on tree hierarchy, an indoor 3D virtual scene is constructed with the help of Unity3D software to realize the optimization of architectural space interior design. Overall style of architectural interior space = −2.304 + 0.381*furniture + 0.274*soft furnishing color + 0.205*hard furnishing material + 0.165*lamps + 0.183*hard furnishing color + 0.106*accessories + 0.124*soft furnishing material + 0.115*fabric. Senior and graduate users of higher education had the same attitude towards “personalization” of interior design (both scored 4.33, close to “approved”), while faculty members had the lowest rating (2.6). This study can serve as a guide for the presentation of architectural interiors.

The New Ecology of Chinese Language and Literature in the Digital Age--Cultural Inheritance and Innovation

Abstract Digital media is perpetually evolving, significantly impacting the Chinese language and literature. Concurrently, the rapid pace of modern lifestyles poses challenges to the transmission of cultural heritage within Chinese literary traditions. Accordingly, this study explores the pathways for digital innovation in Chinese literature, focusing on the integration of key virtual technologies to facilitate the cultural inheritance of the Chinese language. This research highlights the application of advanced virtual technologies in preserving and transmitting Chinese linguistic culture. It involves designing an experiential process for cultural inheritance, utilizing these technologies to process graphic and textual information pertinent to the Chinese language and literature. Furthermore, the study innovates cultural transmission methods through the synthesis of virtual 3D scenes and the implementation of human-computer interaction functionalities. An experimental evaluation approach was employed to assess the impact of virtual reality technology on the learning outcomes in Chinese literature and its cultural transmission. The findings indicate that users who interactively engage with the content in a virtual environment achieve a learning effect score that is 0.6528 points higher than those using traditional browsing methods. This underscores the enhanced efficacy of interactive experiences in facilitating the learning of Chinese literature. The regression analysis further demonstrates the significant promotional effects of the number of virtual experiences in Chinese literature (P1) and the rate of user interaction with computers (P2) on the dissemination of Chinese cultural content. The fixed and random effects for the number of virtual experiences are 0.9428 and 0.9784, respectively, while those for user interaction rates are 0.8945 and 0.8835. These results suggest a substantial impact on the broader dissemination and transmission of Chinese language literature, reinforcing the value of integrating virtual reality technologies in cultural education.

Design and development of networked real-life cycling training system based on mixed reality technology

The intelligent riding platform cooperates with the PC-side riding training system to simulate the effect of outdoor riding with a certain sense of reality. With the rapid development of information technology, users have also put forward higher requirements for cycling training systems. The 3D virtual scene riding mode provided by the existing intelligent riding training system does not meet the user's preference for real riding, and the domestic riding platform cannot simulate the real road feeling, lacking realism and fun. Therefore, developing a richer and more interesting new cycling training mode and creating a more realistic and accurate real cycling experience based on mixed reality are the new demands of users for the cycling training system. At the same time, the calculation and development of rider power based on the platform is the core of it. In the original single-person riding training mode, the server framework and client-side functional modules are constructed by using the principle of network communication and related technologies such as the production of online game rooms to realize the multi-player competitive function.

When a tree model meets texture baking: an approach for quality-preserving lightweight visualization in virtual 3D scene construction

ABSTRACT Three-dimensional (3D) high-fidelity surface models play an important role in urban scene construction. However, the data quantity of such models is large and places a tremendous burden on rendering. Many applications must balance the visual quality of the models with the rendering efficiency. The study provides a practical texture baking processing pipeline for generating 3D models to reduce the model complexity and preserve the visually pleasing details. Concretely, we apply a mesh simplification to the original model and use texture baking to create three types of baked textures, namely, a diffuse map, normal map and displacement map. The simplified model with the baked textures has a pleasing visualization effect in a rendering engine. Furthermore, we discuss the influence of various factors in the process on the results, as well as the functional principles and characteristics of the baking textures. The proposed approach is very useful for real-time rendering with limited rendering hardware as no additional memory or computing capacity is required for properly preserving the relief details of the model. Each step in the pipeline is described in detail to facilitate the realization.

PBR Textures Capture by CNN Trained in Virtual 3D Scene

PBR Textures Capture by CNN Trained in Virtual 3D Scene

Fusing surveillance videos and three‐dimensional scene: A mixed reality system

AbstractAugmented Virtual Environments (AVE) or Virtual‐Reality Fusion systems fuse dynamic videos with static three‐dimensional (3D) models of a virtual environment to provide an optimal solution for visualizing and understanding multichannel surveillance systems. However, texture distortion caused by viewpoint changes in such systems is a critical issue that needs to be addressed. To minimize texture fusion distortion, this paper presents a novel virtual environment system in two phases, offline and online phases, to dynamically fuse multiple surveillance videos with a virtual 3D scene. In the offline phase, a static virtual environment is obtained by performing a 3D photogrammetric reconstruction from the input images of the scene. In the online phase, the virtual environment is augmented by fusing multiple videos through two optional strategies. One strategy is to dynamically map images of different videos onto a 3D model of the virtual environment, and the other is to extract moving objects and represent them as billboards. The system can be used to visualize a 3D environment from any viewpoint augmented by real‐time videos. Experiments and user studies in different scenarios demonstrate the superiority of our system.

Research on the Relationship between Motion Performance and User Experience of Golf Virtual Simulation Putting Simulator

This paper designs and develops a virtual golf simulation putting simulator based on the existing computer technology and conducts in-depth research and analysis on the relationship between its motion performance and user experience. The network architecture of the distributed virtual golf simulation system and the scene data management model are established, based on which the server-side system design and the client-side network communication module design of the distributed virtual golf simulation system are carried out. In the requirement analysis, the functional requirements such as building VR scenes, data communication and recognition models, and the non-functional requirements such as system security and ease of use are analyzed; in the outline design, the hardware equipment and logical architecture of the automatic user experience optimization system are described; in the detailed design, the functional modules of the system are designed in detail, including VR induction experience, physiological signal dataset user experience identification, data communication, optimization strategy, and so on, and important class diagrams and flowcharts are given. The intervention effects of positive thinking training on sports performance and improving athletes’ attention and receptivity have been verified and recognized by coaches and athletes. The putting simulator in the experimental class had higher hole-in-hole parameters than the control class, a highly significant difference; the putting simulator in the experimental class had higher hole-in-hole parameters than the control class, with a highly significant difference. These 3D models may contain more detailed information. In a virtual scene, the more detailed information a model contains, the more polygons the model needs, so that the computer needs to draw many polygons per frame, which has a great impact on the real-time performance of scene drawing. The parameters of the 5-yard chip-and-shoot in the experimental class were higher than those in the control class, and there was a very significant difference between the parameters of the 15-yard chip-and-shoot in the experimental class and those in the control class. The experimental results show that the model optimization processing method and rendering acceleration technology proposed in this paper can largely improve the rendering efficiency of 3D virtual scenes.

Scene-relative object motion biases depth percepts

An important function of the visual system is to represent 3D scene structure from a sequence of 2D images projected onto the retinae. During observer translation, the relative image motion of stationary objects at different distances (motion parallax) provides potent depth information. However, if an object moves relative to the scene, this complicates the computation of depth from motion parallax since there will be an additional component of image motion related to scene-relative object motion. To correctly compute depth from motion parallax, only the component of image motion caused by self-motion should be used by the brain. Previous experimental and theoretical work on perception of depth from motion parallax has assumed that objects are stationary in the world. Thus, it is unknown whether perceived depth based on motion parallax is biased by object motion relative to the scene. Naïve human subjects viewed a virtual 3D scene consisting of a ground plane and stationary background objects, while lateral self-motion was simulated by optic flow. A target object could be either stationary or moving laterally at different velocities, and subjects were asked to judge the depth of the object relative to the plane of fixation. Subjects showed a far bias when object and observer moved in the same direction, and a near bias when object and observer moved in opposite directions. This pattern of biases is expected if subjects confound image motion due to self-motion with that due to scene-relative object motion. These biases were large when the object was viewed monocularly, and were greatly reduced, but not eliminated, when binocular disparity cues were provided. Our findings establish that scene-relative object motion can confound perceptual judgements of depth during self-motion.

Optimization of 3D Virtual Reality Technology in High School Physics Direct-Type Teaching

Virtual reality technology is a computer simulation that allows the creation and experience of virtual worlds, using computers to generate a simulated environment into which the user is immersed. Through a theoretical exposition of 3D virtual reality technology, the elements of teaching and learning and virtual reality technology are analyzed in terms of abstract virtual cognition and concrete modeling techniques, and the forms of application of virtual reality technology in high school physics teaching are described, along with associated educational technology theories. The era of core literacy development poses new challenges to basic teaching and requires new teaching methods and approaches to adapt. The development of 3D virtual reality technology has provided new opportunities for teaching reform. Firstly, the unique charm of virtual reality technology itself has deeply attracted many experts and scholars to explore its application in pedagogy. Secondly, the scale and effect of virtual reality technology in pedagogy applications are still far from the ideal goal in people’s mind, and further exploration and research are needed in the theoretical support of educational technology research. Thirdly, in the process of high school basic teaching, on the one hand, basic experiments play a crucial role, and on the other hand, transforming abstract basic principles and concepts into concrete visible and operable teaching methods is also an important direction for its future development. Combined with the development tools and software to build processes and models, the knowledge of electricity and mechanics in high school physics is modeled in 3Ds MAX and Unity3D to provide technical support for the application of virtual reality in high school physics teaching and to promote the reform of high school physics teaching. Based on an in-depth analysis of virtual reality technology in the construction of teaching resources, this paper explores the feasibility of using software systems and hardware facilities of 3D virtual reality technology in high school physics teaching, such as experimental demonstration, geometric modeling, and 3D graphic transformation. It fits the cognitive level of high school students, constructs 3D virtual scenes and virtual object motion trajectory models that meet the requirements of the high school physics curriculum, and promotes the application of virtual reality technology in high school physics teaching and visualizing abstract physics knowledge, with clear student understanding and significant improvement in learning efficiency.

Artificial Intelligence in Construction of English Classroom Situational Teaching Mode Based on Digital Twin Technology

It is combined the digital twin technology to construct the English classroom situational teaching mode. The system uses advanced virtual reality technology and computer image technology and combines with video and audio synchronization processing technology to provide a new set of methods for students’ language learning. The scene interactive teaching system’s graphics rendering server produce and create 3D virtual scenes or actual photos in real time. Furthermore, according to the English classroom teaching situation, this paper constructs the functional modules of the situational teaching system, conducts an in-depth analysis of the system implementation methods, expresses the system core algorithm flow in the form of diagrams and tables, and obtains the overall system framework. Finally, it is evaluated the effect of the English classroom situational teaching model proposed in this paper through experimental research. From the experimental results, it can be seen that the teaching model proposed in this paper is very effective.

The Development and Realization of Digital Panorama Media Technology Based on VR Technology.

The purpose of this paper is to understand the digital 3D multimedia panoramic visual communication technology based on virtual reality. Firstly, the key concepts and characteristics of virtual reality are introduced, including the development and application of digital three-dimensional panorama technology. Then, according to the theoretical research, some basic knowledge of 3D panoramic image Mosaic is introduced, including camera image modeling, image sharing, and image exchange. Finally, with the development of the virtual tour at the College of Normal University, the hardware of panoramic technology and the demand of panoramic image search have been expanded in the application. The design of panoramic Mosaic, panoramic image generation, and virtual tour school construction considers real-world issues. The innovation of this paper lies in that will be used by SketchUp8.0 software builds the geometry of 3d virtual scene and by the cylindrical panoramic images based on image of building 3 d virtual scene organic unifies in together and makes a panoramic image can be as the change of seasons in the real scene and real-time change, enhance the sense of the reality of the system and user immersive.

Integration of 3DGIS and BIM and its application in visual detection of concealed facilities

ABSTRACT The multi-level modeling technology of Building Information Modeling (BIM), combined with Three-dimensional Geographic Information System (3DGIS) macro-scene visualization technology and location information, can realize the transmission of decentralized information from various disciplines to multi-disciplinary collaborative information sharing services. It can be applied independently for the whole life cycle, which plays a positive role in reducing the cost and improving the efficiency of engineering planning, design, construction, operation, and maintenance. In this paper, the data integration and function integration methods of 3DGIS and BIM are designed. In order to avoid the breaking problems caused by attribute information loss and excessive simplification in the process of BIM data integration, the attribute mapping between 3DGIS and BIM based on Industry Foundation Classes (IFC) and City Geography Markup Language (CityGML) and the data simplification method considering the geometric characteristics of BIM are designed. By setting the relevant preconditions and thresholds of patch merging, on the premise of maintaining the structural characteristics of BIM data surface, reduce the amount of model data to improve the efficiency of BIM data loading, rendering and display effect in 3D geospatial scene. Through the data and function integration of 3DGIS and BIM, we can effectively manage the data of large-scale model, and calculate and obtain the geospatial location and direction of key parts of buildings through the coordinate transformation of BIM, which can effectively assist the rapid and accurate positioning of BIM in virtual 3D scene and expand the visualization ability of 3DGIS. By effectively integrating 3DGIS and BIM, this paper gives full play to the spatial management advantages of 3DGIS and the component management advantages of BIM. The rationality and operability of the method are verified by its application in the operation and maintenance management project of concealed facilities in actual buildings.

Design Mode of Stage Performing Arts Based on 3D Modeling and Moving Edge Computing Technology

In recent years, the virtual stage background has become increasingly popular in the stage design of large-scale art evenings as well as in dance performances. It deftly blends the form of dance beauty with the content of dance performance, creating an atmosphere that not only sets the scene but also expands the stage space and enhances the artistic expression of dance. This paper focuses on the design of stage performance art using 3D modeling and MEC (mobile edge computing) technology. The data fusion method of multi-Kinect joints is researched and realized using 3DMAX to complete the modeling and virtual design of a 3D virtual stage scene. The performance scheme is created by analyzing music features with a computer, designing lighting actions, and matching music and lighting actions. Finally, it shows how DDLS (distributed deep learning shunting) configuration affects convergence performance as well as how model setting affects the diversion scheme.

Allometric Vegetation Modeling and SAR Image Simulation for Polarimetry and Interferometry

This paper establishes a low degrees-of-freedom allometric vegetation model based on the Biomass and allometry database (BAAD). It consists of a 5-bit species encoding scheme and a 5-parameter relationship derived from the BAAD data records. Combined with opensource fractal tree generation engine, it can produce realistic tree samples of a large variety of species. A coherent electromagnetic scattering calculation method is developed for the vegetation model where the generalized Rayleigh-Gans (GRG) approximation and the infinite cylinder approximation are used to calculate the scattering matrix of leaves and branches/trunk. Four-path multiple scattering mechanisms between vegetation and the ground are considered and attenuations through vegetation canopy are also considered. The scattering model is validated against numerical methods. In addition, an end-to-end simulation tool is developed. Optical image is used to extract individual trees with center positions and crown diameters. The rest parameters are generated using the derived allometry model. Virtual 3D scene with vegetation on digital elevation map (DEM) can be generated and SAR images can be simulated. Several case studies are carried out for both polarimetric synthetic aperture radar (SAR) interferometry (PolInSAR) and multi-temporal interferometric SAR (InSAR). One case of the Mount Fuji area is simulated and validated against ALOS-2 data and demonstrates an average scattering coefficient error of less than 3dB. Additional cases of Southwest China, Hainan Island and the Great Khingan Mountain demonstrate the feasibility of the proposed simulation scheme for various application scenarios.

Product 3D virtual display scene modelling based on augmented reality technology

Product 3D virtual display scene modelling based on augmented reality technology