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The assessment of perceived multimedia quality is a central research field in information and media technology. Conventionally, psychophysical techniques are used for determining the quality of multimedia signals. Recently, Brain-Computer Interfacing (BCI)-based methods have been proposed for the assessment of perceived multimedia signal quality. In this paper we give an overview over the shortcomings...
Effect of adaptive threshold on shot boundary detection performance is analyzed in this paper, where the threshold is used to determine whether a target frame is a shot boundary or not in a broadcasting video content. Adaptive threshold is calculated using input threshold and visual similarities of adjacent frames of a target frame. The experimental results show that application of adaptive threshold...
The paper discusses the main didactical principles and problems related to the interactive eLearning. The important stages at designing of multimedia adaptive eLearning systems are presented and they are used as a bases for realization of an adaptive eLearning system. The prototype is piloted with undergraduate students enrolled in the Informatics course. The solution improves students' concepts understanding...
Este documento presenta el proceso de elaboración de un micromundo educativo, con el cual se pretende apoyar actividades de comprensión lectora y escucha de la lengua nam trik hablada en el resguardo de Totoró, departamento del Cauca-Colombia. Para este propósito, se describe la adaptación metodológica obtenida a partir del estudio de tres metodologías: (i) Metodología para la construcción de materiales...
Interactive online content development is one of the main challenges universities are facing today. Therefore, they require tools to facilitate the creation of digital content for teachers and make the production process sustainable. In addition, universities will have to provide resources to teachers such as recording studios, qualified staff and guidelines. With this in mind, University Polytechnic...
Image encryption is a quite well-developed area of multimedia security which helps to protect the confidentiality of authorized users' image content by converting it into an incomprehensible form. Most of the image encryption algorithms will generate encrypted images with noise-like or texture-like contents. Hence it's easy to distinguish natural images from encrypted images. The chances of attacks...
The interactive artwork “deBallution” is to catch audience members' throwing movements on a virtual screen and drawing various generated kaleidoscope images to predict points from the audience throwing on the screen. Audience members threw the pseudo-balls for large-size screen and caused symbolic digital revolution, devolution.
In this paper, an enhanced mobility manager will be presented to overcome many drawbacks of Castalia's traditional mobility manager. The presented mobility manger can deal with paths rather than lines. This will allow users to simulate nodes moving with any possibilities within the simulation space. Additionally a 3D visualization engine will be integrated so that users can visualize their simulated...
Narrative games may offer reasoning on players' behavior or make-believe on players' personation as a pursuit to achieve specific goals. One of the goals is probably the intention to instill learning, which subconsciously provide information on the content of the game. However, there is lack of empirical evidence on game aesthetics for player's perceived learning. By means of expert review, this article...
Multimedia semantic concept detection is an emerging research area in recent years. One of the prominent challenges in multimedia concept detection is data imbalance. In this study, a multimedia data mining framework for interesting concept detection in videos is presented. First, the Minimum Description Length (MDL) discretization algorithm is extended to handle the imbalanced data. Thereafter, a...
Video-based learning has gained popularity in higher education in recent years. Danmaku video is a kind of video where the screen is overlaid with user comments. In this study, the user comments consist of ideas and explanations about important concepts in the video, thus providing domain-specific knowledge and reducing the cognitive load for comprehension. This study tries to understand the effect...
A system for efficient multimedia content analysis and automatic annotation is presented in this paper. The system is able to identify objects in videos and annotate them with metadata. It includes three modules: the first provides detection and recognition of faces; the second provides generic object detection, based on a deep convolutional neural network; the third provides automated location estimation...
Digital storytelling applications are playing an increasingly important role in people's daily life. In contemporary storytelling applications such as PowerPoint presentation and macro/micro blogs, good presentation images are always highly desired by content creators to boost their presentation in an intuitive and attractive way. Existing studies, however, have not yet addressed the challenging problem...
Most existing discriminative tracking methods model a target object as a whole and train a tracker based on holistic templates, which cannot effectively deal with partial occlusions. Instead, in this paper, by treating the target as a collection of local patches, we propose a novel tracking approach based on boosted local classifiers. Initially, a set of local patches are sampled to train a set of...
By analyzing the generation of fragmentized reading environment in the age of multimedia information and the changes in reading psychology and reading purpose of the cognitive behaviors under such environment, it is discussed in this paper that under the fragmentized reading environment, the reading psychology of users changes from "linearity" to "nonlinearity", and the reading...
This research collects data on the profile of the digital journalist in Ecuador, role, characteristics, training, knowledge, content management and use of Web 2.0 tools in their daily work; for this we have selected six national newspapers that have a digital version: El Universo; El Comercio; La Hora, El Telégrafo, Expreso y Extra. The research was conducted through quantitative and qualitative methods;...
This paper aims to investigate the multimedia applications enhancing active self-learning in term of (1) the suitability of multimedia applications in relative with learning content and (2) the suitability of interactivity design, nature of subject content and learner experience. The multimedia technology design required to associate with a variety of factors: content design, interactivity, visual...
Nowadays, multimedia retrieval has become a task of high importance, due to the need for efficient and fast access to very large and heterogeneous multimedia collections. An interesting challenge within the aforementioned task is the efficient combination of different modalities in a multimedia object and especially the fusion between textual and visual information. The fusion of multiple modalities...
In this paper, we present a subclass-representation approach that predicts the probability of a social image belonging to one particular class. We explore the co-occurrence of user-contributed tags to find subclasses with a strong connection to the top level class. We then project each image onto the resulting subclass space, generating a subclass representation for the image. The advantage of our...
The fast growth of video data requires robust, efficient, and scalable systems to allow for indexing and retrieval. These systems must be accessible from lightweight, portable and usable interfaces to help users in management and search of video content. This demo paper presents LIvRE, an extension of an existing open source tool for image retrieval to support video indexing. LIvRE consists of three...
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