We present a new data structure, called the MultiSculpure to represent 3D shapes at multiple levels of detail. The input shape at high resolution is described as a mesh of triangles. A coarse approximation of this shape is provided by the convex hull of the mesh, while intermediate approximations are obtained by sculpturing the space that separates the convex hull from the mesh. A higher level ...

ACKNOWLEDGMENT The authors express their appreciation for numerous constructive suggestions, which led to improvements on various phases of the manuscript, to Dr. A high performance multiple data rate burst modem for satellite packet communication, " EASCON Conference Record, Nov. 198 1. A microprocessor-based PSK modem for packet transmission over satellite channels, " IEEE Truns. Abstract-A g...

Paper introduces main characteristics and particulars of an innovative design for an Unmanned Surface Vehicle to autonomously launch and recover AUVs (Autonomous Underwater Vehicles) in open sea. The USV has an unconventional SWATH hull shape and in its smaller size version, it has dedicated hangar at midship that can host one medium size AUV, completely recovered onboard. The focus of this pap...

Approximation is one of the key techniques used in manipulating geometric objects. Aggregation is a form of approximation that joins objects that are likely to be grouped together as a single unit. This can improve efficiency, reduce complexity and generate levels of detail, and has application in rendering, cartography and molecular structure design. In this work, we present a general framewor...

Modern research in the field of oceanology Arctic region, studying ice conditions, environmental and climatic monitoring, prospecting hydrographic works, monitoring extended bottom structures, oceano-graphic measurements, search for sunken objects, chemical physical measurements aquatic environment, underwater objects topography cannot be imagined without use autonomous unmanned submersibles. U...

The abilities to build precise human kinematic models and to perform accurate human motion tracking are essential in a wide variety of applications such as ergonomic design, biometrics, anthropological studies, entertainment, human computer interfaces for intelligent environments, and surveillance. Due to the complexity of the human bodies and the problem of self-occlusion, modeling and trackin...

The flat-hull ship design is an innovative concept that saves costs and speed-up the fabrication of ship. Even though was hydrodynamically inefficient, some shipowners probably experienced issue with its unusual shape disadvantages where drag greater than conventional ships. This paper aimed to improve a vessel using hull vane bow foil reduce resistance. asymmetric NACA 4412 0012 were used for ...

In this paper a method is proposed for shape recognition and grasping of unknown objects using a robotic hand with two soft fingers and one omnidirectional camera. For shape recognition, we propose to use a simple 2D version of the visual volume intersection method to obtain the visual hull of the object in a horizontal plane from multiple images taken from different positions around the object...

Convex and concave hulls are useful concepts for a wide variety of application areas, such as pattern recognition, image processing, statistics, and classification tasks. Concave hull performs better than convex hull, but it is difficult to formulate and few algorithms are suggested. Especially, an n-dimensional concave hull is more difficult than a 2or 3dimensional one. In this paper, we propo...