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Digital images obtained through medical imaging techniques are viewed using different visualization applications (methods). Also with the help of these applications, the three dimensional (3D) models of the images are created. Usually, the visualization and modelling processes are executed by medical staff, using general purpose applications. Via the same applications operation planning is made, after...
This study consists of the partial result of the High Scope Plan "The Study of the Teaching of Dig-itized Project-Based Learning in the Atayal Indige-nous High School" of the Ministry of Science and Technology, ROC. This is a quantitative study. The participants were 24 indigenous high school students in Yilan. Through the teaching procedures, the students' visual design abilities of cultural...
A stereo vision based autonomous navigation method for 3-DOF systems is presented in this paper. It is able to tackle the learning and recognition problem of generic scenes in an unstructured environment, providing motion-planning capability to control all the 3 DOFs of a robotic system. In this method, 3 spatial constraints are generated from a single visual recognition to estimate the robot pose...
Computer simulation of tree development can provide important insight into real world tree behavior. Numerous models have been developed ranging from simple equations to complicated 3D geometrical models that allow for simulation of acquisition and allocation of carbohydrates. We introduce IMapple (Interactively Modeled Apple), a functional structural apple tree model that builds on the source-sink...
Great efforts have been made over the last few decades to promote the development of computer aided diagnosis systems for melanoma detection. However, most of these systems employ multiple descriptors with bag-of-features model to represent the lesions. Since the melanoma and nevi share a large number of common patterns, the representation of original features are not sufficiently discriminative....
As one of research directions of Intelligent Transportation System (ITS), Cooperative Vehicle Infrastructure System (CVIS) has attracted the attention of domestic and foreign researchers. CVIS is a complex large system, so it is very necessary to simulate and verify the system before put it into use. In this paper, the traffic simulation environment is built, including road network, vehicles, city...
The paper proposes a class-specific feature assisted automatic classification approach of microscopic HEp-2 cell images. Unlike traditional methods our method highlights two important aspects: (1) the visual characteristics of classes to formulate class-specific image features and (2) the classification task is treated as hierarchical verification sub-tasks. Thus, the overall classification problem...
Visual tracking and estimation of the 3D posture of a micro/nano-object is a key issue in the development of automated manipulation tasks using the visual feedback. The 3D posture of the micro-object is estimated based on a template matching algorithm. Nevertheless, a key challenge for visual tracking in a scanning electron microscope (SEM) is the difficulty to observe the motion along the depth direction...
With the increasing number of clinical interventions using needle shaped tools, robotic control of needle insertion procedures has been an active research field for many years. In this work we propose a 3D model of a flexible needle that takes into account tissue deformations in order to predict the needle shape and trajectory when it is inserted using a robotic arm. To account for tissue displacements,...
The view planning problem is the problem that involves finding suitable viewpoints for vision-related tasks such as inspection or reconstruction. In this paper, we propose a novel view planning algorithm for a camera-equipped Unmanned Aerial Vehicle (UAV) acquiring visual geometric information of target objects in its surrounding environment. The proposed model-based approach makes use of iterative...
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...
A new software system has been developed for converting CAD (Computer-Aided Design) models to Geant4 geometries. It converts CAD to two solids types — Constructive Solid Geometry (CSG) and tessellated solids. The CAD-to-CSG conversion is based on a newly developed half-space solid type, which represents exactly the CAD solids using analytical surfaces. The CAD conversion to the tessellated solids...
Technology such as GPS equipped smart phones and voice commands have opened up navigation for users who are blind. However performing activities that others take for granted, such as crossing the street, is still an intense experience. Not all crosswalks are marked, drivers may not be paying attention, and noisy city environments may prevent any types of sonic feedback from being understood. This...
This paper presents an experimental method and apparatus of augmented reality (AR) for nDimensional (nD) building information modeling (BIM). BIM allows nD information to be visualized simultaneously by architects, engineers and constructors to gain a synchronized understanding viewing from different perspectives. However, BIM is conventionally being operated on a desktop-based computer which makes...
In this paper, we consider a single object visual tracking problem using multi-object filtering technique. We represent object appearance as a multi-object distribution of keypoints. Hidden positions of keypoints are observed by using SURF feature detectors and multi-Bernoulli filtering is used for tracking of keypoints. Unlike other feature matching based object trackers, multi-Bernoulli filtering...
Dynamic occlusion handling is critical for correct depth perception in Augmented Reality (AR) applications. Consequently it is a key component to ensure realistic and immersive AR experiences. Existing solutions to tackle this challenge typically suffer from various limitations, e.g. assumption of a static scene or high computational complexity. In this work, we propose an algorithm for depth map...
In this paper, we present a visual mechanism and a visual saliency model which is suitable for the visual tracking algorithm. In order to extract robust feature of motion area, instead of using saliency map to detect moving targets, our algorithm adopts a bottom-up attention model based on the human visual information processing mechanism. The method is robust to illumination and viewpoint changes...
Serious games and simulations are called to fulfill an important role in education. They have already demonstrated effectiveness not only from the point of view of learning, but also as motivation tools. The current work examines the progress that, from the eMadrid Network, is taking place in this research area, together with the new research lines that are being opened.
The article describes a new author's method of floodlighting designing of architectural objects. The method is described and the advantages and limits are shown. The method allows to create a multivariate concept of illumination without the need of usage of complex visualization tools. It is based on projections on the real object of the 3D model or two-dimensional grid, the luminance distribution...
Technology trends and market changes force modern manufacturing companies to employ complex, standalone mechatronic components for automating their production. The complexity of mechatronic components induces adverse effects on their corrective maintenance. Handling downtime of these components requires knowledge of system composition, effect of external and internal disturbances on the component...
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