Most of current Video Copy Detection systems (VCD) perform a multimodal detection by dividing the system into subsystems. Each subsystem performs a copy detection using a different feature (either visual or audio), and the sets of candidates are combined (fused) to create the final result. We present a VCD system that fuses visual and audio descriptors at the similarity search level. The system...

Learning how to extract texture features from noncontrolled environments characterized by distorted images is a still-open task. By using a new rotation-invariant and scale-invariant image descriptor based on steerable pyramid decomposition, and a novel multiclass recognition method based on optimum-path forest, a new texture recognition system is proposed. By combining the discriminating power...

REN Wei-Ya, LI Shuo-Hao, Guo Qiang; LI Guo-Hui; Zhang Jun Email: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]. (College of Information System and Management, National University of Defense Technology, Hunan Changsha, 410073, China) Abstract: The key in agglomerative clustering is to define the affinity measure between two sets. A...

The adaptive fault-tolerant control problem for descriptor nonlinear system is researched in this paper.

This paper advocates a novel material-aware feature descriptor for volumetric image registration. We rigorously formulate a novel probability density function (PDF) based distance metric to devise a compact local feature descriptor supporting invariance of full 3D orientation and isometric deformation. The central idea is to employ anisotropic heat diffusion to characterize the detected local v...

We propose a color-based image descriptor that can be used for image indexing based on high-level semantic concepts. The descriptor is based on Kobayashi’s Color Image Scale, which is a system that includes 130 basic colors combined in 1170 three-color combinations. Each combination is labeled with one of 180 high-level semantic concepts, like ”elegant”, ”romantic”, ”provocative”, etc. Moreover...

There are many ways to classify the competencies of online tutors. This paper will investigate an innovative classification schema of online tutor competency based on an analysis of the current literature, with particular reference to the work of several selected authors. This schema has been developed to investigate the role these competencies play within the online learning environment. The s...

This article is focused on analyzing stability and L2 gain properties for switched systems composed of a family of linear discrete-time descriptor subsystems. Concerning descriptor systems, they are also known as singular systems or implicit systems and have high abilities in representing dynamical systems [1, 2]. Since they can preserve physical parameters in the coefficient matrices, and desc...