Businesses have invested a lot of money into intelligent machine vision, industrial robotics and automation technology. The proposed solution of this paper deals with industrial applications of robotic bin picking. In this paper, a pose estimation approach is introduce to determine the coarse position and rotation of a known object using commonly available image processing tools applied to 3D l...

This paper describes a parallel fast generation method of large-scale meshes for a hierarchical domain decomposition method implemented in the open source parallel finite element software ADVENTURE. The present authors have newly developed a parallel algorithm such that communication table is updated and inherited in parallel during mesh refinement after the initial communication table is gener...

Blending sharp edges in solid models is an important task of Computeraided design. The prominent algorithms for producing blending fillet surfaces relay mostly on the rolling-ball method. These algorithms are applied on B-Rep solid models that are used in many CAD/CAM systems. Such solid models allow for a hierarchical approach of modeling which can incorporate blending operations within its st...

Throughout this thesis, there is an underlying assumption that the quality of a computer graphics image is important. This thesis reports research into computer image synthesis for obtaining this quality. The introduction of discontinuity meshing into existing radiosity techniques has enabled images to be produced at levels of previously unobtainable quality. However, discontinuity meshing is a...

Interval volumes are a generalization of isosurfaces that represent the set of points between two surfaces. In this paper, we present a compact multi-resolution representation for interval volume meshes extracted from regularly sampled volume data sets. The multi-resolution model is a hierarchical tetrahedral mesh whose updates are based on the longest edge bisection (LEB) subdivision strategy ...

This paper de nes, describes and illustrates a systems engineering process for development of software systems implementing high performance computing applications. The example which drives the creation of this process is development of a exible and extendible program development infrastructure for parallel structured adaptive meshes, the HDDA/DAGH package. The fundamental systems engineering p...

In this paper we introduce variable resoultion 4–k meshes, a powerful structure for the representation of geometric objects at multiple levels of detail. It combines most properties of other related descriptions with several advantages, such as more flexibility and greater expressive power. The main unique feature of the 4–k mesh structure lies in its variable resolution capability, which is cr...

Polynomial splines over hierarchical T-meshes (PHT-splines) have an efficient and simple local refinement algorithm, but fail to represent exactly certain complex engineering geometries. In this paper, based on the current isogeometric framework, we overcome the drawbacks of PHT-splines by extending these to Rational PHT-splines (RPHT-splines), and explore RPHT-splines as the basis for analysis...

We describe methods for high-performance and high-quality rendering of point models, including advanced shading, anti-aliasing, and transparency. we keep the rendering quality as the previous GPU-based point rendering approaches, while involving normal vector computation for each frame. We also present efficient data structures for hierarchical rendering on modern graphics processors (GPUs). In...

In this paper we present a novel and efficient depthimage representation and warping technique based on a piece-wise linear approximation of the depth-image as a textured and simplified triangle mesh. We describe the application of a hierarchical triangulation method to generate view-dependent triangulated depth-meshes efficiently from reference depth-images, and propose a new hardware accelera...