We present an incremental system that builds accurate CAD models of objects from multiple range images. Using a hybrid of surjlace mesh and volumetric representations, the system creates a “water-tight” 3 0 model at each step of the modeling process, allowing reasonable models to be built from a small number of views. We also present a method that can be used to plan the next view and reduce th...

Extracting features of components in an image is an important step for recognition of objects in the image. It is an intermediate-level image processing task as it transforms an image to a list of features. SIMD mesh-connected computers are considered natural architectures for low-level image processing tasks that transform an image into another image. In this paper, we design a fast general al...

Decomposing a 3D mesh into significant regions is considered as a fundamental process in computer graphics, since several algorithms use the segmentation results as an initial step, such as, skeleton extraction, shape retrieval, shape correspondence, and compression. In this work, we present a new segmentation algorithm using spectral clustering where the affinity matrix is constructed by combi...

We propose a decentralized algorithm to calculate the control signals for lights in wireless sensor/actuator networks. This algorithm uses an appropriate step size in the iterative process used for quickly computing the control signals. We demonstrate the accuracy and efficiency of this approach compared with the penalty method by using Mote-based mesh sensor networks. The estimation error of t...

This paper presents a parallel method for progressive mesh simplification. A progressive mesh (PM) is a continuous mesh representation of a given 3D object which makes it possible to efficiently access all mesh representations between a low and a high level of resolution. The creation of a progressive mesh is a time consuming process and has a need for parallelization. Our parallel approach con...

This paper presents a parallel method for progressive mesh simplification. A progressive mesh (PM) is a continuous mesh representation of a given 3D object which makes it possible to efficiently access all mesh representations between a low and a high level of resolution. The creation of a progressive mesh is a time consuming process and has a need for parallelization. Our parallel approach con...

We propose a novel mesh optimization approach that is useful for speeding up a simulation of finite elements-based deformable objects. The approach is based on a quality metric derived from the critical simulation time step of explicit time integration schemes (i.e., the stability limit for the integration of dynamic equations). Our mesh smoothing approach consists of a set of small and indepen...

We prove that the two-step backward differentiation formula (BDF) method is stable on arbitrary time grids; while variable-step three-step scheme if almost all adjacent step ratios are less than 2.553. These results relax severe mesh restrictions in literature and provide a new understanding of BDF methods. Our main tools include discrete orthogonal convolution kernels an elliptic type matrix n...

Studies of timeliness and outcome in lung cancer care lung neoplasms[MESH] OR lung cancer*[text word] AND time factors[MeSH] OR waiting lists[MeSH] OR delay[text word] OR timeliness[text word]) AND mortality[MeSH Terms] OR survival rate[MESH] OR survival analysis[MESH] OR survival[MeSH Terms] AND 1995/01/01[PDat]: 2007/06/01[PDat] AND Humans[Mesh] AND English[lang] Studies aimed at improving ti...

This paper describes easy and effective adaptive technique for Finite Element Method. Utilize Hex-R which refine an existing mesh. Refined mesh keeps original coarse mesh topologically. Finally capability of adaptive method using Hex-R is mentioned. Introduction Adaptive technique is one of the most important issues in order to realize effective FEM analysis process. Many works for adaptive mes...