The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Distributed teams of agents can provide robust solutions to many problems of interest, and allowing a human to influence and manage those agents can extend the range of problems that can be solved while improving the team's efficiency. Within this context, it is interesting to develop methods for interaction that are intuitive and that utilize haptic interaction so that the human manager need not...
The techniques of interleaving phases and magnetic coupling in power converters are effective downsizing the capacitive components as well as the inductive components in certain configurations. These techniques help tackle the problem of large mass and volume in autonomous electric vehicles as the use of the transformer-linked method in interleaved converters facilitates the miniaturization of the...
We present an approach that uses combinatorial optimization to decide which spatial relations between objects are relevant to accurately describe an indoor scene, made up of objects. We extract scene models from object configurations that are acquired during demonstration of actions, characteristic for a certain scene. We model scenes as graphs with Implicit Shape Models (ISMs), a Generalized Hough...
This paper looks at the design of a distributed control law to solve the formation shape control problem using bearing-only constraints in two-dimensional space while inter-agent collision between the neighbor agents is avoided. We assume each agent can measure the relative position and is only given the desired bearing (and not the distance) to its neighbors in some local coordinate system attached...
This paper studies cages of convex polygonal objects using three point fingers. The fingers are said to cage the object when it is impossible to move the object arbitrarily far from its initial placement without penetrating the fingers. We consider a three-parameter model of the relative position of the fingers, which gives complete generality for three point fingers in the plane. We consider robustness...
Research on hand gesture recognition has been intensified in the last decade. There has been successful work on gesture recognition by using shape and texture features from 2D images and videos. However, it is still a challenging task in handling various conditions with hand scale variations, hand rotations, and hand ambiguity due to finger occlusions. Recent work has started using depth images for...
Candide-3 is a well-known model, used to represent triangular meshes of human faces. It is common to only estimate 17 to 21 of the 79 model parameters. We show that these are insufficient to fit model vertices to facial feature points with low error and if more parameters are estimated, the model mesh deforms to unnatural configurations. To overcome this problem, we propose a novel solution: Given...
This paper investigates into enriching a (step-down) classic Fibonacci switched capacitor converter voltage target ratios set by applying a multiphase switching. Simple theoretical closed-form expressions for equivalent output resistances are obtained using charge flow balance analysis that also provides a useful insight into switched capacitor and output voltage ripples. It is shown that employing...
In this paper we present a new method of data hiding in 3D objects. This method is based on a 3D model represented by a cloud of vertices and a list of edges corresponding to the triangular mesh of the surface. The main idea of this method is to find and to synchronize particular areas that can be used to embed the message. The data hiding relies on the modification of the topology of edges in chosen...
We examine the in-network optimal content placement and storage allocation problem by formulating a linear program. Our objective is to minimize the overall cost of content delivery subject to total storage budget and link capacity constraints. The solution determines whether/where to keep a copy of a content based on contents ranking distributions. In addition, we present a realization of the optimal...
Glaucoma, a leading cause of blindness worldwide, can be detected using retinal thicknesses from spectral-domain optical coherence tomography (SD-OCT) scans of the macula. We calculate the desired thickness maps as the distance between the inner-limiting membrane (ILM) and retinal pigmented epithelium (RPE) of the retina. To delineate these two layers, we use a set of two deformable open surfaces...
Topological signal processing, especially persistent homology, is a growing field of study for analyzing sets of data points that has been heretofore applied to unlabeled data. In this work, we consider the case of labeled data and examine the topology of the decision boundary separating different labeled classes. Specifically, we propose a novel approach to construct simplicial complexes of decision...
We propose a novel optimal data placement technique considering not only the data locality but also the global data access cost to improve the performance of MapReduce in cloud data centers. We first conducted analytical and experimental study to identify the performance issues of MapReduce in data center and show that MapReduce tasks which are involved in unexpected remote data access take much more...
We propose a new non-rigid articulated point set registration framework for human pose estimation that aims at improving two recent registration techniques and filling the gap between the two. One is Coherent Point Drift (CPD) that is a powerful Gaussian Mixture Model (GMM) -based non-rigid registration method, but may not be suitable for articulated deformations due to the violation of motion coherence...
This paper focuses on the design of a gripper that can grasp objects with shape, size and pose uncertainty. Rather than a dexterous hand with multiple actuators and sensors, a passively adaptive gripper made of soft material can conform to various objects by using compliance. In this paper, we present a novel design methodology for a passively adaptive gripper by employing a level-set-based topology...
While digital IC design is highly automated, analog circuits are still handcrafted in a time-consuming, manual fashion today. This paper introduces a novel Parameterized Circuit Description Scheme (PCDS) for the development of procedural analog schematic generators as parameterized circuits. Circuit designers themselves can use PCDS to create circuit automatisms which capture valuable expert knowledge,...
In this paper, we propose a distance-based control law for acyclic persistent formations of mobile agents. The proposed normalized gradient law, which can be implemented distributively by using local measurements, allows agents to achieve their desired formation shape specified by inter-agent distance constraints in finite time, with local but not global con-vergence. We show some local finite-time...
This research proposed a new model to differentiate leaf venation topology patterns using Multiscale Fractal Dimension. Identification of medicinal plants is important considering wide range of biodiversity in Indonesia and significant role of medicinal plants in Indonesia. Plants identification can be performed with shape analysis using plant leaf venation as a feature. Multiscale Fractal Dimension...
In this paper, we categorized topology of terrorist networks into six because of their ideological, historical and practical similarities by showing them with real terrorist network examples.
In the theory of communication it is essential that agents are able to exchange information. This fact is closely related to the study of connected spaces in topology. A communication network may be modelled as a topological space such that agents can communicate if and only if they belong to the same path connected component of that space. In order to study combinatorial properties of such a space,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.