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We introduce a visual analytics method to analyze eye-tracking data and saliency models for dynamic stimuli, such as video or animated graphics. The focus lies on the analysis of the different performance of saliency models in contrast to human observers to identify trends in the general viewing behavior, including time sequences of attentional synchrony and objects with a strong attentional focus...
In the last two decades the use of technology in art projects has proliferated, as is the case of the interactive projections based on movement used in artistic performances and installations. However, the artists responsible for creating this work typically have to rely on computer experts to implement this type of interactive systems. The tool herein presented, MotionDesigner, intends to assist...
The state-of-the-art image classification methods require an intensive learning stage and a considerable amount of training images. Recently, with the introduction of these models (and in particular convolutional neural network (CNN)), it is believed that the best solution to achieve a system with high performance on scene classification is to learn deep scene features using CNN. While this can be...
Due to advancement in minimization and mass-production, cameras are ubiquitously embedded in most of current mobile devices including phones, vehicles, robots, and augmentedreality displays. These mobile cameras are cheap and can gather in real-time large amounts of streaming data about the surrounding environment. Using an information-theoretic model of a streaming video captured by a mobile camera,...
Programming capabilities are important to the new professionals. Although several initiatives all over the world haves been proposed for teaching programming to people at all levels. Many undergraduate students still fail in the programming courses. Proposed strategies have included visual programming and automatic evaluation of exercises. Nevertheless, there is still a lack of knowledge about students'...
A mobile flying projector is hard to build due to the limited size and payload capability of a micro aerial vehicle. Few flying projector designs have been studied in recent research. However, to date, no practical solution has been presented. We propose a versatile laser projection system enabling in-flight projection with feedforward correction for stabilization of projected images. We present a...
The different strategies for feature extraction and synthesis employed by humans and computers are often complementary, hence combining the two into an integrated object recognition system may considerably improve performance over either used in isolation. Rapid Serial Visual Presentation (RSVP) is one well-established technique that has shown promise integrating human perception into a machine perception...
This paper builds on the authors' previous work with Augmented Reality (AR) technology as a tool to enhance traditional visualizations and facilitate the understanding of complex information. In this paper, we expand our previous work with AR technology by focusing on the process of creating custom content. Based on users' feedback, we describe and compare various strategies to create 3D models from...
Program visualizations help students understand the runtime behavior of other programs. They are educational tools to complement lectures or replace inefficient static drawings. A recent survey found 46 program visualizations developed from 1979 to 2012 reported that their effectiveness is unclear. They also evaluated learner engagement strategies implemented by visualization systems, but other learning...
One of the main difficulties of the literacy process is the question of the spelling of the Portuguese language, which has no regularity in relation to issue of letter-sound conversion. The advancement of technology in the educational environment has become the most dynamic and engaging lessons for students and teachers. The use of natural interfaces makes it the simplest and easiest applications...
To improve the learning process in mathematics, new approaches are needed. Yachay Math is visual and interactive software that has been developed to use on desktop computers, tablets and mobile devices. It is a tool for spatio-temporal reasoning, designed for students to learn mathematical concepts dynamically. Yachay Math provides to teachers a visual approach for mathematics teaching and for the...
This article aims to improve the math learning process in students of rural schools. For this purpose, an educational serious game was developed for use on the web and mobile technologies. The tool was designed using a visual approach so that students reinforce their learning developed in class. The tool was tested and validated by thirty four students and four teachers of two rural schools in Apurímac-Perú...
The traffic between computer networks must be controlled to prevent unauthorized access. Firewall is responsible for filtering data packets between networks, applying rules to select data packets that can get in/out to access the network. The firewall must be configured accordingly network access policy. Therefore, the students have to be trained to acquire skills not only to understand network access...
Recently, investigating boundary prior to aid other low-level image cues, have gained great attention in salient object detection. Although the salient regions are mostly located in the image center, the inverse might not necessarily be true. In addition, such kind of center-bias assumption is very simple and fragile, especially when salient regions often touch the image boundary or the images are...
In this paper, we present an animation developed in the Wolfram Mathematica System for the visualization of the m-convex hull of sets containing finitely many points on the Cartesian plane.
We present a design space exploration of interaction techniques for supporting multiple collaborators exploring data on a shared large display. Our proposed solution is based on users controlling individual lenses using both explicit gestures as well as proxemics: the spatial relations between people and physical artifacts such as their distance, orientation, and movement. We discuss different design...
Social network emanates from socially interacting entities that are represented as nodes with identical properties. These nodes are interconnected through different forms of relationship among them. Social network analysis (SNA) establishes interactions and defines the relationships on basis of theoretical foundation of networks and graphs. Social media involves in exploring several ways people share...
DBLP (Digital Bibliography & Library Project) has the huge collection (around 3.4 million) of journal articles with its meta data, papers published in various national and international conferences, and other number of online publications in the field of computer science. Research data on DBLP increases enormously which arises many research problems in the domain of bibliography data network analysis...
This paper objective is to analyze LBP and CM for the comparative analysis in the field of content based image retrieval (CBIR). In this paper LBP and CM methods are used for the efficient retrieval of the images from the Wang database. All the 10 classes are used for the results comparison. LBP is used for better thresholding and CM is used with color dominant features for the efficient retrieval...
Archaeology is a broad church and its role as a “two culture” discipline is frequently cited. This position at the interface of the arts and sciences remains central to archaeological activity but there have been significant changes in the structure of archaeology and its relationship to society overall. The growth of heritage science, in particular, is driving change and development within archaeology...
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