The need to model muscles means different things to artistic and technical practitioners. Three different muscle representations are presented and the motivations behind their design are discussed. Each representation allows unique capabilities and operations to be performed on the model, yet the underlying mathematical foundation is the same for all. This is achieved by developing a data-fitti...

In the present paper we describe the CAGD part of an effort that aimed at the unification of the whole geometric preprocessing that preceded the wind tunnel readings with a realistic air-plane wing model in a recent research project. This preprocessing includes the automated generation of the CAD models which were used for the manufacturing of the multi-parted wing-fuselage configuration and th...

We have developed hybrid CPU/GPU algorithms that utilize the GPU to accelerate Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) operations and facilitate interactive control and feedback to the designer. Our GPU accelerated algorithms helps the designer in performing modeling operations like direct sketching and interactive trimming on Non Uniform Rational BSpline (NURBS) surf...

The use of polygonal meshes, especially triangle meshes, is manifold but a lot of algorithms require the mesh to be structured in a certain way and cannot be applied to an arbitrarily shaped mesh. The process of replacing an arbitrary mesh by a structured one is called remeshing. Triangle meshes with subdivision connectivity are an important class of structured meshes and have been studied thor...

O. Ismail, Senior Member, IEEE Abstract— This paper presents an efficient method for degree elevation of interval B-spline curves. The four fixed Kharitonov's polynomials (four fixed B-spline curves) associated with the original interval B-spline curve are obtained. The method is based on the matrix identity. The B-spline basis functions are represented as linear combinations of the B-splines o...

A learning feedforward controller (LFFC) using a dilated B-splines network (BSN) is proposed in this paper. The LFFC acts as an add-on element to . the existing feedback controller (FBC) for control performance enhancement. The LFFC signal is u p dated iteratively based on the FBC signal of previous iteration as the task repeats. In the LFFC approach, there are two parameters to tune: the Bspli...

We present an approach for polarimetric Synthetic Aperture Radar (SAR) image region boundary detection based on the use of B-Spline active contours and a new model for polarimetric SAR data: the GH P distribution. In order to detect the boundary of a region, initial BSpline curves are specified, either automatically or manually, and the proposed algorithm uses a deformable contours technique to...

An algorithmic approach to degree reduction of interval B-spline curve is presented in this paper. The curves that are useful in geometric modeling should have a relatively smooth shape and should be intuitively connected with the path of the sequence of control points. One family of curves satisfying this requirement is represented by the B-spline curves. The four fixed Kharitonov's polynomial...

هدف از این تحقیق تعیین مناطق دارای پتانسیل حضور چشمة آب زیرزمینی و اولویت‌بندی عوامل مؤثر در آن، با استفاده روش حداکثر آنتروپی (مدل MaxEnt)، سیستم اطلاعات جغرافیایی سنجش دور است. حاضر، چهارده شاخص تأثیرگذار شامل شاخص‌های توپوگرافیکی، زمین‌شناسی، اقلیمی، هیدرولوژیکی کاربری اراضی همچنین، جدید ارتفاع سطح نزدیک‌ترین زهکش (HAND) شده ابتدا، شاخص‌ها به دو بخش توپوگرافیکی سایر تقسیم شدند نقشة براساس آن...