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Nowadays, visual features play a key role, as they can provide a concise representation of visual data that is efficient for multiple tasks, notably content retrieval and object recognition. In parallel, visual sensors have been improving, targeting richer acquisitions of the light in a visual scene. In this context, the so-called light field cameras, which have recently emerged, are able to go beyond...
The Leopold and Rudolf Blaschka replicas of ma- rine invertebrates are among the more famous objects produced in the XIXth century for pedagogical purposes. Their high level of detail, still unknown manufacturing technique and their con- ceived artistic beauty, make these glass replicas precious museum exhibits currently. The fragility of these items produced by the Blaschka family (father and son)...
Nowadays, stereoscopic images are commonly used for 3D image generation, these are composed by a pair of images viewed independently by each eye, which creates a feeling of immersion and in depth perception. 3D vision technologies have multiple applications in many different areas such as medicine, entertainment, computer vision, etc.; being accessible to a wider group of people. However, there is...
Visualization of fluid flows at a high-Reynolds number (Re ∼ 105) presents difficulties for user comprehension due to density and ambiguous interactions between vortices. Prior work has used cluster-based reduced-order modelling (CROM) to analyze the wake of a High-Speed Train (HST) with Re = 86,000. In this paper, we present a novel surface visualization to convey the spatiotemporal changes undergone...
While the multi-million-dollar videogame industry sees constant improvements in visuals and processing power with every new processor, gaming console, or graphics card release, is there any avenue to pursue new innovations in this discipline? One answer lies in the introduction of procedural music in videogames as an innovative means of overcoming the repetitive nature of traditionally composed game...
Nowadays, collaborative systems and applications are widely used to allow multiple users to work together in order to achieve one same goal. In the field of virtual and augmented realities, such collaboration is often sought to effectuate complex activities in some relevant experiences. Users can share virtual objects, but most importantly, they use collaborative 3D interaction, visualize their objects...
Spatial ability and effective communication are considered important skills in the engineering and technology fields. However, little research has been done to assess how engineering or technology students communicate spatial information. Effective spatial information can help engineers and technologists describe their design, as well as how parts of a design are assembled into a final shape. In this...
Face alignment has witnessed substantial progress in the last decade. One of the recent focuses has been aligning a dense 3D face shape to face images with large head poses. The dominant technology used is based on the cascade of regressors, e.g., CNNs, which has shown promising results. Nonetheless, the cascade of CNNs suffers from several drawbacks, e.g., lack of end-to-end training, handcrafted...
Convolutional Neural Networks (CNN) have been regarded as a powerful class of models for image recognition problems. Nevertheless, it is not trivial when utilizing a CNN for learning spatio-temporal video representation. A few studies have shown that performing 3D convolutions is a rewarding approach to capture both spatial and temporal dimensions in videos. However, the development of a very deep...
Given an image of a street scene in a city, this paper develops a new method that can quickly and precisely pinpoint at which location (as well as viewing direction) the image was taken, against a pre-stored large-scale 3D point-cloud map of the city. We adopt the recently developed 2D-3D direct feature matching framework for this task [23,31,32,42–44]. This is a challenging task especially for large-scale...
Edge and surface are two fundamental visual elements of an object. The majority of existing object proposal approaches utilize edge or edge-like cues to rank candidates, while we consider that the surface cue containing the 3D characteristic of objects should be captured effectively for proposals, which has been rarely discussed before. In this paper, an object-level proposal model is presented, which...
This paper discusses the challenges related to the insertion of Virtual and Augmented Reality in the teaching and learning processes, considering their multidisciplinary aspect, the adherence to Web 3.0 and a scenario of possible gains and results with such an insertion. There will be pointed out the features that made VR and AR solutions with a potential big impact, despite not properly explored...
Nowadays, people have to face many challenges In order to become familiar with all the functionalities of electronical devices. The training process becomes thus essential, especially when we are referring to consumer electronics created for people with disabilities. Our paper presents the importance of training visually impaired people for an advanced sensory substitution device. By using the advantages...
The article represents retrospection of special suit (scaphandre, spacesuit) advancement. Chronology of Soviet aviation- and space- suits making, exploitation and technological features of various special suits are considered herein. Historical connections and continuity of technologies of their creation are given. The article contains the results of a new approach in the history of space technology...
Although shadows in images have a constructive role providing a natural view of features of the scene, they also have a destructive role in image processing by hiding significant information. Improving the quality of 3D textured models for serious games and augmented reality applications via shadow detection and removal remains challenging due to the complexity of an image scene. This paper proposes...
In this paper I review gaze-based interaction, distinguishing eye movement analysis from synthesis in virtual reality and games for serious applications. My focus is on four forms of gaze-based interaction: diagnostic, active, passive, and expressive. In discussing each, I briefly review seminal results and recent advancements, highlighting outstanding research problems.
This paper presents a serious game designed for children suffering from profound intellectual and multiple disabilities (PIMD) also know as multihandicap, for their evaluation and cognitive training. The specificities of these children must be taken into account for the choice of both the game feedbacks and interfaces.
We address the problem of on-line volumetric map creation of unknown environments and planning of safe trajectories. The sensor used for this purpose is a stereo camera. Our system is designed to work in GPS denied areas. We design a keyframe based hybrid SLAM algorithm which combines feature-based stereo SLAM and direct stereo SLAM. We use it to grow the map while keeping track of the camera pose...
Micro aerial vehicles (MAVs) are strongly limited in their payload and power capacity. In order to implement autonomous navigation, algorithms are therefore desirable that use sensory equipment that is as small, low-weight, and low- power consuming as possible. In this paper, we propose a method for autonomous MAV navigation and exploration using a low-cost consumer-grade quadrocopter equipped with...
In this study, we clarify how a metaphorical door handle influence users' opening-door behaviors and what kansei value metaphorical door handle brings. To achieve this, we conducted a questionnaire with 12 door handles (made by 3D max) based on a sample of 200 students from Future University Hakodate. Each feature was evaluated on a scale from −2 to 2 according to 5 evaluation items. The data was...
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