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Segmentation is a fundamental problem in image processing. In biomedical applications, for example cell analysis, it is important to recognize cells with certain shape characteristics. Although recent advances in microscopy and in experimental methods have made the culturing and imaging of cells in 3D environments possible, there is a great need for advanced image processing methods capable of handling...
Continuum robots are an emerging class of manipulators which exhibit constantly deformable motion and the appearance of infinite degrees of freedom. These structures increase the scope of tasks achievable by robots with their ability to deform into infinite configurations, navigate unpredictable terrain and grasp unfamiliar objects. Often inspired by biological structures such as snakes, and elephant...
For a high penetration of intermittent renewable energy sources, they may cause transmission-line congestion problems in power systems. In particular, among the current forecasting methodologies for renewable generation, an extremely large (but rare) forecasting error in the renewable generation inevitably occurs. In a previous paper, the authors developed a line current variation model to represent...
In this paper, we present a novel method to estimate dichromatic model parameters from a single color image. Estimation of reflectance, shading and specularity has many applications such as shape recovery, specularity removal and facilitates classical image processing and computer vision tasks such as segmentation or classification. Our method is based on two successive and independent constrained...
This paper describes an objective and subjective evaluation models of pencil still drawings for art education. In the subjective evaluation, the evaluation word is summarized. This is a point of view when an art educator evaluates a pencil still drawing. The objective evaluation model consists of factor Fi, which comprises the features value of a basic pencil still drawing. Fi is also defined by considering...
It is difficult to obtain failure data in stability analysis of long lifetime gyro such as hemispherical resonator gyro. Therefore, traditional stability analysis methods based on failure data is useless in stability analysis of long lifetime gyro. A stability analysis method based on probability statistics is proposed in this paper to solve this problem. In this method, Weibull distribution is applied...
Rigid structure-from-motion (RSfM) and non-rigid structure-from-motion (NRSfM) have long been treated in the literature as separate (different) problems. Inspired by a previous work which solved directly for 3D scene structure by factoring the relative camera poses out, we revisit the principle of “maximizing rigidity” in structure-from-motion literature, and develop a unified theory which is applicable...
A novel Finite Element Controller Map (FECM) method for the speed control of a saturated induction motor (IM) drive is presented in this paper. The newly developed algorithm is based on approximate functions in finite elements, which are expressed according to the nodal values of output response of the IM drive. The map complexity depends on the nodes assigned within a discrete element. The proposed...
Using vision systems with SCARA robotic manipulators is beneficial in many industrial applications specially in automated object picking and placing tasks. In this paper, the equations of forward and inverse kinematics of a SCARA manipulator are derived using D-H parameters convention. The mechanical structure, as well as the electrical, electronic and pneumatic components of the manipulator were...
This paper presents the design and a novel rotor shape of a 3 kW, 25000 rpm permanent magnet assisted synchronous reluctance motor (PMa-SynRM) based on a low speed benchmark model. Multiphase PMa-SynRM can operate with low torque ripple, reduced magnet volume and extended field weakening region which makes it a potential candidate for high speed motor design. However, the challenge of high speed PMa-SynRM...
This paper proposes a new intelligent control for an indirect vector controlled induction motor drive for high performance, based on a finite element controller map. The traditional basic conventional algorithm (PI controller) has been successfully used to obtain decoupling control between the rotor flux and the torque. The basic PI has fixed gains that cannot be increased beyond certain limits. In...
In this article, the efficiency of Kalman's filter to classify moving parts is shown. A SCARA robot working cell was designed and built to accomplish this task. The main goal is to classify parts that are being carried on a conveyor belt at constant speed according to their shape or color. The operation of the Kalman's filter is described, as well as the mathematical equations to develop the algorithm...
Pectoral fin types of biological fish have an enormous diversity, and they play an essential role in locomotion of fish. The adaptation to shapes and movement mechanism of pectoral fin types helps swimming motion of the main body effectively, that results in the high flexibility and maneuverability of locomotion. This paper proposes a hydrodynamic model of a type of flexible pectoral fin (FPF), which...
This paper studies the influence of three volute geometries of a single-stage centrifugal compressor, using the same vaned diffuser and impeller, the only differences are given by the volute geometry: cross section area and volute tongue. The objective of this research is to determine which of parameters has a major impact on the compressor and how much are the operating range and overall performance...
The research presented here is introducing a modelling approach which investigates the influence of different runoff parameters that are used in the modelling process to achieve a suitable representation of the urban catchments runoff. The aim of this research is to analyse the calibration of a hydrological model in the area of Ølsted, Denmark. Quantitative data such as rainfall, water level and flow...
The present paper details a novel methodology called Meta-Process Model that is able to generate new data-based models for manufacturing processes when no experimental data is available. For that purpose, the concept of Hyper-Models was used to create a higher level of abstraction of these manufacturing processes, along with a Statistical Shape Model (SSM) that is able to capture the modes of shape...
The erosion of contact material is one of the critical failure mechanisms in switch devices. Thus it is important to study the characteristics of contact erosion. In this paper, a two-dimensional magnetic hydrodynamics (MHD) is established to get physical characteristics of the molten pool in cathode. Gas dynamics and statistical methods are then used for the calculation of the vaporization rates...
With wafer fabs running at near full capacity, it is a constant challenge to maintain high yields. Many different products are fabricated by the same equipment. So the sudden change in product yield, a yield excursion, can have a significant impact to many different products. Therefore, it is critical to detect an excursion as early as possible and fix the cause in order to minimize the impact. This...
The diamond ring resonator is recognized as a potential quantum photonic device with varieties of applications. The properties of a ring resonator largely depend on the shape parameters. Designing the shape, however, is difficult without closed-form expression and requires complex simulation. Ordinal optimization is useful for solving simulation-based optimization problems like this. In this paper,...
A precise, stable and invertible model for surface reflectance is the key to the success of photometric stereo with real world materials. Recent developments in the field have enabled shape recovery techniques for surfaces of various types, but an effective solution to directly estimating the surface normal in the presence of highly specular reflectance remains elusive. In this paper, we derive an...
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