نتایج جستجو برای: free object

تعداد نتایج: 798917  

Anthony W. Hager, Bernhard Banaschewski

 The category of the title is called $mathcal{W}$. This has all free objects $F(I)$ ($I$ a set). For an object class $mathcal{A}$, $Hmathcal{A}$ consists of all homomorphic images of $mathcal{A}$-objects. This note continues the study of the $H$-closed monoreflections $(mathcal{R}, r)$ (meaning $Hmathcal{R} = mathcal{R}$), about which we show ({em inter alia}): $A in mathcal{A}$ if and  only if...

Journal: :Computers & Electrical Engineering 2016
Amin Safaei Hongying Lilian Tang Saeid Sanei

In this paper, we propose a novel search-free localization method based on 3-D Bayesian saliency estimation. This method uses a new 3-D object tracking algorithm which includes: object detection, shadow detection and removal, and object recognition based on Bayesian methods. The algorithm is tested over three image datasets with different levels of complexities, and the results are compared wit...

Journal: :IJPRAI 2003
Richard J. Campbell Patrick J. Flynn

Model-Based 3D object recognition systems have a variety of potential applications, but widespread use of such systems has not occurred, due to a number of factors including the representational limitations of models. This has led to systems that recognize objects of free-form shape. The system described in this paper recognizes such free-form objects in dense range data acquired by a structure...

1995
Fang-Chang Lin Jane Yung-jen Hsu

This paper presents a deadlock-free cooperation protocol for an object-sorting task in a multi-agent system. First, the object-sorting task in a distributed robotic system is introduced and a cooperation protocol for the task along with the agent architecture is proposed. The agents are based on a homogeneous agent architecture that consists of search, motion, and communication modules coordina...

2004
Dariu M. Gavrila Daniel Weinland

In this work we investigate kernel methods for object detection. Kernel principal component analysis (KPCA) is the algorithm used to generate nonlinear models of object variation. We focus on edge-based features, i.e. shapes, to represent objects. Object variations are learned a priori in feature space. Based on the Mahalanobis distance we define a distance measure for an object. In contrast to...

2013
Tahseen Fadhil Abbas Ahmed Abdullah Ebraheem

This paper presents a new experimental approach in reverse engineering for rapid reconstruction, modeling and manufacturing of products with complex free form surfaces. The proposed approach eliminates the requirement for camera calibration and poses estimation. Using planar sectioning, we generate a set of horizontal parallel planes slicing the object to a set of parallel cross-sections. For e...

2011
Patrick Garrity

An object is lock-free if it guarantees that in a system where multiple threads are manipulating the object, some thread will complete its operation on the object in a finite number of steps, no matter what happens to other threads. More practically, lock-free programming is a technique to achieve thread safety without the use of locks, which are the current standard. Lock-free objects (LFOs) h...

Journal: :Optical Engineering 2022

Computer-generated holography (CGH) is an ideal three-dimensional (3D) display technology, and head-mounted displays (HMDs) using CGH are expected to become the next-generation devices without eye strain, which called holographic HMDs (holo-HMDs). However, computational load too much for a holo-HMD, has limited processing power. We have devised method that calculates cylindrical object light on...

One of the modern paradigms to develop an application is object oriented analysis and design. In this paradigm, there are several objects and each object plays some specific roles in applications. In an application, we must distinguish between procedural semantics and declarative semantics for their implementation in a specific programming language. For the procedural semantics, we can write a ...

Journal: :Theor. Comput. Sci. 2003
I. Dutour Jean-Marc Fedou

A new systematic approach for the speciication of bijections between sets of combinatorial objects is presented. It is based on the notion of object grammars. Object grammmars are recursive descriptions of objects which generalize context free grammars. The study of a particular substitution in these object grammars connrms once more the key role of Dyck words in the domain of enumerative and b...

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