An ICON programming technique for multimedia presentation designs

The chapter addresses how multimedia presentations can be designed effectively for learners. Based on the literature, it defines the related terms and discusses the role of human factors during the design and development process of multimedia. Then, it discusses strategies, such as providing learner control and using visual cueing, to design effective multimedia presentations. In addition, various technologies in creating multimedia-based instruction are described. Finally, the chapter discusses evaluation frameworks, as well as the implications for integrating multimedia into educational practices.

Augmented reality (AR) is anticipated for use in medical practice. However, virtual objects cannot be overlaid exactly on real objects using theoretical data. Therefore, this study is intended to determine the correction method to overlay a virtual object with real object accurately. Experimental results confirmed that differences of perceived depth position between real and virtual objects can be made negligible (within 1 mm on average) by correcting sizes of virtual objects such that they can be seen identically to the real object.

The purpose of the article is to reveal the peculiarities of virtual art environment formation by multimedia tools. The methodology of the research involves the use of general and special research methods. Complex and analytical methods are defined as basic. Methods of system-comparative and formal analysis, as well as systematization, generalization and visual-graphic methods in the study of empirical material were used to identify specific features, content and visual features of multimedia presentations. The scientific novelty of the work is in a comprehensive analysis of the virtual artistic environment in the context of its content formation using multimedia design. Conclusions. It has been found that today museums are increasingly turning to the virtual environment for effective communication, and the most effective way to transmit information is to involve multimedia design. The synthesis of traditional and innovative means of artistic expression in the context of the formation of static and interactive visual content of the art institution becomes an effective mechanism of communication with the virtual visitor.

The role of vestibular function on the representation of space and its impairment after central and peripheral lesions

Multimedia presentations are composed of objects belonging to different data types such as video, audio, text and image. An important aspect is that, quite often, the user defining a presentation needs to express sophisticated temporal and spatial constraints among the objects composing the presentation. We present a system (called MPGS-Multimedia Presentation Generator System) which supports the specification of constraints among multimedia objects and the generation of multimedia presentations according to the specified constraints. The constraint model provided by MPGS is very flexible and powerful in terms of the kinds of object constraints it can represent. A large number of innovative features are supported including: asynchronous and simultaneous spatial constraints; components of interest and priority levels; motion functions. Obviously, the flexibility provided to the users requires the development of nontrivial techniques to check constraint consistency and to generate a presentation satisfying the specified constraints. We illustrate the solutions we have devised in the framework of MPGS.

On the construction of intelligent multimedia presentations

The laser triangulation method allows non-contact scanning of objects and obtaining a three-dimensional point cloud. The measuring system consists of a camera and illuminator that allows projection of a linear laser beam on the surface of the object. The position of the laser beam is recorded on the camera matrix. Next, on the basis of the knowledge of camera angle and laser plane, coordinates of points describing the surfaces and edges of objects in three-dimensional space are determined. By calibrating the obtained data, it is possible to measure products, determining parameters such as volume, angle between planes, position of the object in space. The article discusses the issue of searching for the assumed model among the point cloud and determining its location and orientation in the container, enabling collision-free implementation of manipulation tasks with the use of an industrial robot.

Augmented Reality (AR) is the combination of digital information and user's target in real world. The handheld devices like Smartphone have all the components that are necessary to use an augmented reality application, where the virtual three dimensional objects imported on real world environment. In AR based mobile applications utilizing an image target trackers are growing. In these continue growing trends can lead the applications to require more interaction technique interfaces, which will attract the user attentions (e.g. hand interaction). In this proposes work a new approach used to dynamic nature hand interaction on Virtual Reality (VR) objects through the mobile based AR application. Virtual link and buttons are placed on the image target surface and interact by the human 3-D hand. Hand detection algorithm used for fast detecting and track the hand on virtual objects. By this proposed system the user can directly change the behavior and position of the virtual object by human hand. Virtual links and buttons are allowing the users to view other virtual objects on same virtual space. Filter data technique by reducing redundancies and creating layout for remaining information on virtual objects for change the behavior or functions of the virtual interface objects.

Virtual and mixed realities make it possible to view and interact with virtual objects in a three-dimensional space. However, the location to display menus in three-dimensional space and the means of manipulating them are often problems. Existing studies developed methods of displaying a menu in the air or on the body. In this paper, a menu system is proposed that appears in front of the user's palm (of the non-dominant hand) when he/she opens that hand. The user employs the other hand (dominant hand) to then interact with the menu. Using the space around the body as opposed to projections onto actual limbs makes it possible to display more items in more varied layouts. Additionally, the user can control rendering of the menu by opening or closing the hand. Being adjacent to the palm of the open hand also enables the user to adjust the hand position to operate the menu more comfortably or to move the menu to an area where it is easier to view. In this study, we conducted an experiment to develop the menu design guidelines to ensure smooth menu operation, designed an optimal menu, and tested that menu by determining the ease of use in interacting with our modeling application.

The paper is concerned with a virtual image of an Arctic town as exemplified by Salekhard. Arctic discourse is extensively researched in contemporary humanities and social studies. The Arctic is being conceptualized as a unique region of circumpolar civilization, and its sustainability is considered a national issue of strategic importance, particularly in terms of the prosperity of Arctic towns, which have received a significant investment to shape their brands and identities. The above-mentioned trends are key to understanding the relevance of the study. However, few Russian researchers have previously dealt with the issues of shaping, preserving, and developing Russian Arctic towns’ unique identity and representation in a virtual space. This paper seeks to contribute to this area of research. Hence, the paper is aimed at identifying key characteristics of an Arctic town’s virtual image as represented by Salekhard, the administrative centre of the Yamalo-Nenets Autonomous Okrug located in the Arctic zone of the Russian Federation. To explore Salekhard’s virtual image, the author has adopted a contextual analysis of data retrieved from January to June 2022 through parcing the official community of Salekhard’s municipality administration on the social networking service VK (VKontakte) facilitated by VK API. In terms of the study’s findings, the specific components shaping the image of Arctic towns are presented; the notion of ‘a town’s virtual image’ is defined; key topics, most popular hashtags and most frequent lexemes are revealed by means of contextual analysis; evaluative and functional dominants of VK posts that affect Salekhard’s image are identified; building upon this, authentic features of Salekhard as an Arctic town are outlined. In conclusion, emphasis is placed on peculiar features of the representation of Arctic discourse in a virtual space based on the explored data, contextual conditions of shaping, developing and promoting the town’s virtual image, and major components that constitute this image.

In this paper we argue that the automatic generation of dynamic multimedia presentation requires both low-level collections of objective measurements for media units representing prototypical style elements, and high-level conceptual descriptions supporting contextual and presentational requirements. Only the combination of both facilitates the retrieval of adequate material and its user-centred presentation. We discuss the problems of visual signification for images in dynamic systems and explain how a combined approach can help overcome such problems. We then propose an architecture for such a system and present its applicability for a museum-oriented multimedia system with a working example.

Space activities are continuously at risk due to the ever-increasing amount of uncontrolled space objects, called space debris, which can collide with operational spacecraft. Therefore, space agencies have started space situational awareness (SSA) programs, which aim to provide timely and accurate data regarding the space environment and hazards to infrastructure in orbit and on the ground. An essential need for SSA is the orbit determination of as many space objects as possible, in order to predict and prevent collisions. In this work, techniques for orbit determination of objects observed on short arcs are developed. This scenario frequently occurs with space debris, which are characterised by long observational gaps due to observability constraints. The classical least squares method, used for orbit determination, is revisited by studying the effect of nonlinearities in the mapping between observations and state. Differential algebra techniques are exploited, which enable the computation of high-order Taylor expansions of the residuals with respect to the state. Approximations of differential correction methods can then be avoided and the confidence region of the solution accurately characterized with a nonlinear approach. This uncertainty region can be reduced when more observations of the same objects are acquired. Thus, a method that both recognizes associated observations and sequentially reduces the solution uncertainty when two or more sets of observations are associated is proposed. The six dimensional ($6D$) association problem is addressed as a series of $2D$ and $4D$ problems to alleviate the computational cost. In case of successful association, part of the initial uncertainty is pruned away. The least squares solution and its uncertainty region can finally be used to initialize a sequential filter. A particle filter is implemented using differential algebra, so that system and measurement equations are substituted by polynomial evaluations and the resulting computational cost of the algorithm is alleviated. A population-based stochastic optimizer, the multiobjective particle swarm optimizer, is exploited to generate particles that best represent the probability distribution over solution orbits.

In civil circulation, due to its digitalization, virtual objects that, unlike a real object of the surrounding world in its usual sense, have a digital form wihout a real shell, are widespread. The civil law regime of virtual objects is not defined in the current legislation. Meanwhile, in the context of the development of metaverse concepts, this problem and the search for ways to solve it is becoming increasingly urgent. Determining the legal regime of objects created by the user of the platform on which access to virtual reality is provided, augmented reality objects, as well as objects existing and created within the metaverse, where the user’s usual activities can be carried out, is ambiguous in scholarship and jurisprudence. This study was undertaken to determine the features of the civil law regime of objects created in virtual reality, augmented reality, and in the metaverse. It was concluded that the regimes of familiar civil law objects (property, results of intellectual activity, intangible benefits, services) can be extended to the objects under consideration. However, the material legal concept does not fully reflect the legal nature of the objects under study. Therefore, virtual objects that copy things of the physical world, in essence, can be recognized as other property rights. At the same time, the intellectual property rules can be applied to these objects only if they are created as a result of a person’s creative efforts.

Virtual objects in augmented realty (AR) often appear ”floaty”–a visual indication that augmented objects are poorly integrated into real world environments through shading. As a result, it is difficult to determine where objects are positioned in space. However, accurate depth perception is crucial for many applications in AR. I begin investigating this issue by evaluating different shading techniques for shadows, because shadows represent an important depth cue for creating a point of contact with surfaces beneath objects in three-dimensional space. As my research progresses, I hope to extend my investigation to other relative depth cues that may further resolve cue conflicts present in AR displays. My goal is to develop graphics based solutions to mitigate cue conflicts that result in perceptual uncertainty, especially in optical see-through (OST) AR displays. Resolving perceptual limitations will allow us to provide guidelines for software and hardware development of both future and current AR devices.

A hologram is described as a 'screenless display' that provides a realism and three-dimensional effect as if seeing a real object, and refers to a technology that implements a three-dimensional stereoscopic image using laser light. These holograms are currently being used in various cultural industries such as performances, exhibitions, and advertisements. In particular, pseudo-holograms such as floating techniques are mainly used in the cultural heritage exhibition field. However, pseudo-holograms can implement the same effect as holograms that show virtual 3D images in the real world, but there are still practical and technical limitations in satisfying audiences who want perfect 3D images like those seen in science fiction movies. The hologram, which is attracting attention as a future high-value-added imaging technology, can naturally reproduce real or virtual objects in a three-dimensional space as if they were real. In addition, holography technology is expected to lead the growth of the immersive content industry in the future by improving the technical limitations of the current augmented reality(AR) or virtual reality(VR). Therefore, if the current holography technology is gradually improved and supplemented with hologram screen, hologram printing, and plenoptic visualization technology, it is expected that the field of digital heritage contents and exhibitions using hologram will further develop in the future.