In this paper, the consensus problem of descriptor multi-agent systems is considered. Each agent’s dynamics is given in general form of continuous-time linear descriptor system, and the communication topology among the agents is assumed to be directed under fixed topology case and balanced under switching topology case. To solve the multi-agent consensus problem, three kinds of distributed obse...

This paper presents a robust descriptor for matching vertical lines among omnidirectional images and a method for automatically calibrating an omnidirectional camera with the robot reference system. The first part of this paper describes how to build the feature descriptor. We show that the descriptor is unique and distinctive for each feature and is invariant to rotation and slight changes of ...

Practical stability is of significant practical importance in scientific and engineering problems but less investigated for descriptor systems. In this paper, the concepts of practical stability are developed to descriptor systems based on the idea of the generalized state which stands for the dynamic part of the state. To derive the main results of this paper, a comparison principle is establi...

Based on the upper-triangular Hessenberg forms for descriptor linear systems and a method for right coprime factorization of descriptor linear systems using matrix elementary transformations, a simple, neat and numerically stable iterative formula for right coprime factorization of a regular singleinput descriptor linear system is proposed. This iterative formula gives directly the coefficients...

This paper investigate a binary local image descriptor for Augmented Reality (AR) applications. Recently, various fields are benefit from AR. This technique can enhance the real environment by inserting virtual objects generated by computer. Temporal coherence between virtual and real objects must be ensure in AR system realization. In this paper, object recognition based on extracted natural f...

In this paper we introduce a general descriptor-type LFT representation of rational parametric matrices. This generalized representation allows to represent arbitrary rationally dependent multivariate functions in LFT-form. As applications, we develop explicit LFT realizations of the transfer-function matrix of a linear descriptor system whose state space matrices depend rationally on a set of ...

The problem of filter design for descriptor systems system has been intensively studied by a number of researchers for the past three decades; see Ref.[1]-[6]. This is due not only to theoretical interest but also to the relevance of this topic in control engineering applications. Descriptor systems or so called singularly perturbed systems are dynamical systems with multiple time-scales. Descr...

It is a critical problem to find the commerce quickly and accuracy. Information from different sources can improve the retrieval performance. In this paper, we proposed a combination algorithm of color descriptor, LBP texture descriptor and HOG shape descriptor for commerce image retrieval. The commerce image retrieval experiments on commerce image dataset PI 100 indicate the combination can bo...

In this paper, we investigate several theoretical and computational aspects of fundamental subspaces for linear, time-invariant (LTI) descriptor systems, which appear in the solution of many control and estimation problems. Different types of reachability and controllability for descriptor systems are described and discussed. The Rosenbrock system matrix pencil is employed for the computation o...

A feature detector and a feature descriptor are presented, which are applicable to 3D range data. The feature detector is used to identify locations in the range data at which the feature descriptor is applied. The feature descriptor, or feature transform, calculates a signature for each identified location on the basis of local shape information. The approach used in both the feature detector ...