Influence of Digital Media Technology on Forest Scene Animation Design

The animation construction of forest scene is a virtual stand scene visualization framework which uses the related technologies of virtual forest modeling and stand scene visualization, and uses the scene graph technology to manage. This paper studies the influence of digital media technology on the animation design of forest scene. In this paper, the model of virtual stand scene is mainly completed by Creator modeling software of MultiGen company. In order to reduce the number of scene patches and ensure realism, the tree model is designed with OpenFlight tree hierarchy. At the same time, the key technologies of Creator modeling and model optimization are analyzed. The virtual stand scene visualization framework uses the open source graphics rendering engine OpenSceneGraph (OSG) as the scene driver to realize the stand scene visualization. This paper provides a variety of roaming control methods. The experimental results show that the virtual forest scene visualization framework can better simulate the forest scene and has a strong sense of reality.

An Efficient, Platform-Independent Map Rendering Framework for Mobile Augmented Reality

With the extensive application of big spatial data and the emergence of spatial computing, augmented reality (AR) map rendering has attracted significant attention. A common issue in existing solutions is that AR-GIS systems rely on different platform-specific graphics libraries on different operating systems, and rendering implementations can vary across various platforms. This causes performance degradation and rendering styles that are not consistent across environments. However, high-performance rendering consistency across devices is critical in AR-GIS, especially for edge collaborative computing. In this paper, we present a high-performance, platform-independent AR-GIS rendering engine; the augmented reality universal graphics library (AUGL) engine. A unified cross-platform interface is proposed to preserve AR-GIS rendering style consistency across platforms. High-performance AR-GIS map symbol drawing models are defined and implemented based on a unified algorithm interface. We also develop a pre-caching strategy, optimized spatial-index querying, and a GPU-accelerated vector drawing algorithm that minimizes IO latency throughout the rendering process. Comparisons to existing AR-GIS visualization engines indicate that the performance of the AUGL engine is two times higher than that of the AR-GIS rendering engine on the Android, iOS, and Vuforia platforms. The drawing efficiency for vector polygons is improved significantly. The rendering performance is more than three times better than the average performances of existing Android and iOS systems.

Learning Preposition Priors to Generate Scene from Text Using Contact Constraints

In this paper, we propose the method of generating a 3D scene from text with respect to interior designing by considering the orientation of every object present in the scene. Thousands of interiors designing related sentences are generated using RNN to preserve context between sentences. The BiLSTM-RNN-WE method is used for POS Tagging, blender is used to generate 3D scene based on query. This paper focuses on interior designing and has considered objects placement with respect to the preposition in the Sentence. Our approach uses Natural Language processing to extract useful information from the user text, which will aid the rendering engine generate better scene.

Serious Gaming for Virtual Archaeoastronomy

Many cultures worldwide have left traces of sacred architecture and monuments which often show correlation to astronomical events like solstitial sunrises. Virtual archaeology can be used to explore such orientation patterns using digital reconstructions and positions of celestial objects computed from modern astronomical models. Most 3D editing systems used to build virtual reconstructions of such monuments however fail to provide astronomically accurate solar illumination models which can recreate the slightly different solar positions of antiquity or even prehistory, and even worse, any usable representation of the night sky. In recent years, two systems created independently by the authors of this study have been utilized for investigations into the orientation of architecture with respect to celestial processes. Both had their advantages and shortcomings compared to each other. One extended a dedicated open-source desktop astronomy program with a 3D rendering engine where such monuments can be investigated in the first-person perspective by interactive walkthrough. The other system uses a game engine and external online resources which provides only solar or planetary positions, but no star data. This study presents ways of connecting both systems in an attempt to take advantage of the best of both approaches.

Smart home R&D system based on virtual reality

Smart home products and equipment are relatively expensive while using specific physical objects to prove functional characteristics, the cost is high, and it is difficult to meet the personal needs of customers. Based on the above background, the purpose of this research is the application and design of a smart home R&D system based on virtual reality. This study proposes the concept of introducing virtual reality methods into the control scene given the shortcomings of the existing smart home control interface interaction methods. From the perspective of being more suitable for the user’s needs, the virtual reality method is used to optimize the smart home interaction methods. Through the analysis of the user’s lifestyle and needs, the functional module model of applying virtual reality to the smart home control scheme is established. Then, by collecting data, use Sketchup software to build and optimize the model of the simulation system to build a realistic family scene model. Finally, through the integrated use of the Unity 3D rendering engine and the virtual simulation system technology, the intelligent simulation of the interior functions of the house is realized. Experimental results show that using virtual reality to optimize the interaction of smart homes, the control method is relatively simple, and the cost can be reduced by about 20%.

XML for Art: A Case Study

Generative art applies a touch of randomness or chaos to algorithms to generate works of art. The production of such works requires a rendering engine, a programming substrate, randomizers, mathematical, geometric, and other operations, and the ability to track experiments. The XML stack can provide all these elements. This paper explores one person's application of the XML stack to generative art.

A High-performance Cross-platform Map Rendering Engine for Mobile Geographic Information System (GIS)

With the diversification of terminal equipment and operating systems, higher requirements are placed on the rendering performance of maps. The traditional map rendering engine relies on the corresponding operating system graphics library, and there are problems such as the inability to cross the operating system, low rendering performance, and inconsistent rendering style. With the development of hardware, graphics processing unit (GPU) appears in various platforms. How to use GPU hardware to improve map rendering performance has become a critical challenge. In order to address the above problems, this study proposes a cross-platform and high-performance map rendering (Graphics Library engine, GL engine), which uses mask drawing technology and texture dictionary text rendering technology. It can be used on different hardware platforms and different operating systems based on the OpenGL graphics library. The high-performance map rendering engine maintains a consistent map rendering style on different platforms. The results of the benchmark experiments show that the performance of GL engine is 1.75 times and 1.54 times better than the general map rendering engine in the iOS system and in the Android system, respectively, and the rendering performance for vector tiles is 11.89 times and 9.52 times better than rendering in the Mapbox in the iOS system and in the Android system, respectively.

RHINOCEROS 5 + VRAY AS A TOOL FOR THE EVALUATION OF CONDITIONS IN <i>BIC</i> ENVIRONMENTS: THE CASES OF THE ATARAZANAS, THE CONVENT OF SAN AGUSTIN AND THE PLAZA NUEVA IN SEVILLE

<p><strong>Abstract.</strong> This contribution aims to deepen the formulas for the application of 3D modelling tools in their application to the protection of heritage in the Spanish legislative framework: Although they emerge as instruments for their eminently industrial application, new architecture or infographics, the Rhinoceros software, together with the Vray rendering engine, constitute a tandem that has proved to be very useful for determining the degrees of impact (heights, perspectives, buildability, occupation and other urban parameters) in real estate environments declared to be of "Cultural Interest" (from now on referred to as "BIC" - or Asset of Cultural Interest), according to the regional legislation of Andalusia. In addition to the didactic character of the results, which allows their dissemination as teaching material applied in the Degree in Fundamentals of Architecture of the University of Seville, the three case studies presented facilitate the reading of the environment affected by the specific regulations, as well as the technical determination of the visual pollution that the surrounding buildings cause in the building itself. The three case studies include buildings declared "BIC", which are in very different situations of conservation and use, all in the city of Seville, in the south of Spain: while the City Council, which presides over the most important square in the city, is the paradigmatic model of a dynamic and inhabited square, the Atarazanas (former shipyard factory) are in a good state of conservation, but without defined use. The last case, the extinct convent of San Agustin, in addition to not being used, is in a state of ascending deterioration, since a large part of its construction has disappeared thanks to real estate expansion and the absence of legislative protection of the heritage.</p>

A Web Browser Fingerprinting Method Based on the Web Audio API

Web Browser Fingerprinting is a process in which the users are, with high likelihood, uniquely identified by the extracted features from their devices, generating an identifier key (fingerprint). Although it can be used for malicious purposes, especially regarding privacy invasion, Web Browser Fingerprinting can also be used to enhance security (e.g. as a factor in two-factor authentication). This paper investigates the use of Web Audio API as a Web Browser Fingerprinting method capable of identifying the devices. The idea is to prove or not if audio can provide features capable to identify users and devices. Our initial results show that the proposed method is capable of identifying the device’s class, based on features like device’s type, web browser’s version and rendering engine.

RESEARCH ON VISUALIZATION OF GROUND LASER RADAR DATA BASED ON OSG

Three-dimensional (3D) laser scanning is a new advanced technology integrating light, machine, electricity, and computer technologies. It can conduct 3D scanning to the whole shape and form of space objects with high precision. With this technology, you can directly collect the point cloud data of a ground object and create the structure of it for rendering. People use excellent 3D rendering engine to optimize and display the 3D model in order to meet the higher requirements of real time realism rendering and the complexity of the scene. OpenSceneGraph (OSG) is an open source 3D graphics engine. Compared with the current mainstream 3D rendering engine, OSG is practical, economical, and easy to expand. Therefore, OSG is widely used in the fields of virtual simulation, virtual reality, science and engineering visualization. In this paper, a dynamic and interactive ground LiDAR data visualization platform is constructed based on the OSG and the cross-platform C++ application development framework Qt. In view of the point cloud data of .txt format and the triangulation network data file of .obj format, the functions of 3D laser point cloud and triangulation network data display are realized. It is proved by experiments that the platform is of strong practical value as it is easy to operate and provides good interaction.