The Virtual Reality Modeling Language (VRML) was created to put interconnected 3D worlds onto every desktop. The 3D VRML format has the potential for 3D fax and TeleManufacture. An architecture and methodology of using VRML format to integrate a 3D model and Solid Freeform Fabrication system are described in this paper. The prototype software discussed in this paper demonstrates the use of VRML...

We present our concepts for pre-operative planning of brain tumor resections. The proposed system uses a combination of traditional and novel visualization techniques in order to support the surgeon during the planning process. A set of multimodal 2D and 3D views conveys the relation between the lesion and the various structures at risk and also depicts data uncertainty. To facilitate efficient...

In this paper, we present the design and implementation of a 3D Virtual Endoscopy system for facilitating diagnostic and surgical planning phases of endoscopic procedures. Our system allows the user to interactively explore the internal surface of a 3D patient-specific anatomical model and to create and update a fly-through trajectory through the model to simulate endoscopy. We also present an ...

Abstract UAV path planning in 3D cluttered and uncertain environments centers on finding an optimal / sub-optimal collision-free path, considering parallel geometric, physical temporal constraints, fox example, obstacles, infrastructure, or artificial landmarks, etc. This paper introduces a novel node-based algorithm, called Energy Efficient A* (EEA*), which is based the search but overcomes so...

The path planning problem, i.e., the geometrical problem of finding a collision-free path between two given configurations of a robot moving among obstacles, has been studied by many authors in recent years. Several complete algorithms exist for robots with few degrees of freedom (DOF), but they are intractable for more than 4 DOF. In order to tackle problems in higher dimensions, several heuri...

Path planning is a fundamental problem, especially for various AEC applications, such as architectural design, indoor and outdoor navigation, and emergency evacuation. However, the conventional approaches mainly operate path planning on 2D drawings or building layouts by simply considering geometric information, while losing abundant semantic information of building components. To address this ...

This work presents a path planning algorithm for 3D robot formations based on the standard Fast Marching Square (FM2) path planning method. This method is enlarged in order to apply it to robot formations motion planning. The algorithm is based on a leader-followers scheme, which means that the reference pose for the follower robots is defined by geometric equations that place the goal pose of ...

Introduction: Breast conserving radiotherapy is one of the most common procedures performed in any radiation oncology department. A tangential parallel-opposed pair is usually used for this purpose. This technique is performed using 2D or 3D treatment planning systems. The aim of this study was to compare 2D treatment planning with 3D treatment planning in tangential irradiation in breast conse...

Calculating smooth trajectories of bounded curvature has received a very wide attention in the robotic literature of the last 40 years. Most results focus on the study of wheeled non-holonomic vehicles and are concerned with 2D path generation algorithms. The problem of smooth and least curvature 3D path planning is addressed with a variational approach and the general 3D Euler-Poisson equation...