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Text is the easiest means to record information but need not always be the best means for understanding a concept. In psychological theories, it is argued that when information is presented visually, it provides a better means to understand a concept. While techniques exist for generating text from a given image, the inverse problem that is to automatically fetch coherent images to represent a given...
Visual Analytics (VA) is a discipline that integrates computational and human efforts, allowing for effective data exploration with interactive and insightful user interfaces. Human- Data Interaction (HDI) is a relatively new term that we interpret here as the interactive interface between a human and the visual representation of the data, analogous to human computer interaction. Advanced user interfaces...
Augmented Reality (AR) has become a popular technology for both the public and industries. Serious Games (SG) incorporating pedagogical elements for learning, training, or inform. The creation of SG can use AR techniques for their development, with the prospect of new possibilities due to this integration. A Systematic Literature Mapping (SLM) allows a synthesized view of research carried out in the...
The use of smartphones for activities like watching movies and playing games has become commonplace because of the flexibility that devices offer citizens in their increasingly overloaded daily routines. As a consequence, the market has explored the creation of accessories to enhance the user experience in performing these tasks. The present work selected as context the practice of watching movies...
Cardiac auscultation allows diagnosing the heart by listening to its sounds. Current cardiac auscultation training is seeing a preference towards diagnostics equipment such as the echocardiograph that allows visualizing and listening to the heart to determine how the heart is working, rather than the use of the stethoscope which only provides auditory feedback, resulting in a loss of stethoscope-based...
This paper presents a new line based 6-DOF monocular algorithm that uses the iSAM2, a point-based Graph SLAM approach. We extend iSAM2 to minimize the reprojection error of the line features to solve the line-based SLAM problem. A specific line representation is exploited that combines the Plücker Coordinates and the Cayley representation. The Plücker Coordinates are used for the 3D line projection...
Dermoscopy is the in vivo technique of skin surface microscopy which is frequently used in visual examination of the skin. With the rise in the usage of smartphones, many smartphone attachments have been developed that enable dermoscopy on a phone but these attachments are very expensive and are available only for high-end phones. We have developed a novel 3D printed clip-on that can convert any smartphone...
The constant development of scientific and technological forces has led to further exploration and research in various fields. While exploring the real world, scientists have extended their exploration into the virtual world. The emergence of AR technology makes the real world and the virtual world together. The virtual-actual combination has become a new subject. With the growing power of smart phones,...
Virtual Reality may be considered a computational tool often used to aid in medical training, specially in surgical training. That allows surgeons to gain dexterity and experience in surgery without risking real patient lifes, reducing the probability of medical errors to occur, henceforth providing a better quality of life to patients. Due to the fragility of the human eye, more than most other areas...
The results of the inclusion of Virtual Reality in the production line of an Industry Joalheira in the state of Bahia, a case study which was conducted in the elevenmonth period by a Startup consisting of two professional Designers and one Information Technology, between the years of 2008 and 2009. The production flow of this jewelery factory was losses due to continuous communication difficulties...
Autism Spectrum Disorder (ASD) is a behavioral syndrome with different etiologies, deeply affecting the process of child development. Children with ASD have some characteristics in common such as the inability to relate to other people, leading to isolation, communication disorders and obsessive concern for what is unchanging. In addition, these people may experience learning difficulties in various...
Smart TVs have been popularized in the last years, presenting continued innovation regarding different topics such as connectivity, platform support, and options for interaction. Examples of LG and Samsung present interaction options such as voice and gesture control, showing these emerging technologies that were previously tackled mainly on research investigations, as market alternative solutions...
Fear of flying is a real problem that affects the world's population. Approximately 25% of adults experience a significant increase in their anxiety levels when required to take any type of air transport and 10% of them avoid the situation. The approach that has proven to be the most effective in the treatment of phobias is in vivo exposure. However, the difficulty and the cost, and sometimes even...
This work presents the development and validation of a natural interaction method in an immersive CAVE environment. The Microsoft Kinect was used to track the user actions, but only the infrared camera of the device was used, through a gesture recognition model developed by (LEITE, 2015). From such gesture recognition, a nre grammer was defined, as needed for an immersive environment such a the CAVE...
This work proposes a method that allows the entry of text using the Google Cardboard, for this, uses gestures based on geometric forms and smartwatches. Thus, it is proposed the development of a prototype with the purpose of inserting a letter with no more than two user interactions. Gesture recognition is performed using the incremental recognition algorithm. After recognizing the gestures, they...
This work aims to present a methodology of communication between a criminal database and a virtual environment for forensic study, using a proprietary software and a virtual reality prototype, in order to support forensic science activities. The objective is to assist the forensic professional offering the use of criminal investigation resources inside a crime scene simulation, with sensations of...
This paper describes the implementation of a 3D handheld scanning approach based on Kinect. User may get the 3D scans at a very fast rate using real time scanning devices like Kinect. These devices have been utilized in several applications, but the scanning lacks in the accuracy and reliability of the 3D data, which makes their employment a difficult task. This research proposed the 3D handheld scanning...
A near-light perspective shape from shading (SfS) technique applied to endoscopy for 3D visualizations of the gastrointestinal tract regions is presented. By utilizing an extensible reflectance model, we study a robust Huber regularization function based variational SfS model. A balancing parameter is used for weighting the irradiance ad smoothness/regularization terms. Experimental results on different...
This paper presents a fusion of monocular camera-based metric localization, IMU and odometry in dynamic environments of public roads. We build multiple vision-based maps and use them at the same time in localization phase. For the mapping phase, visual maps are built by employing ORB-SLAM and accurate metric positioning from LiDAR-based NDT scan matching. This external positioning is utilized to correct...
This paper presents a novel hierarchical spatiotemporal orientation representation for spacetime image analysis. It is designed to combine the benefits of the multilayer architecture of ConvNets and a more controlled approach to spacetime analysis. A distinguishing aspect of the approach is that unlike most contemporary convolutional networks no learning is involved; rather, all design decisions are...
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