Danni Ai

Adaptive Color Independent Components Based SIFT Descriptors for Image Classification

This paper proposes an adaptive color independent components based SIFT descriptor (termed CIC-SIFT) for image classification. Our motivation is to seek an adaptive and efficient color space for color SIFT feature extraction. Our work has two key contributions. First, based on independent component analysis (ICA), an adaptive and efficient color space is proposed for color image representation. Second, in this ICA-based color space, a discriminative CIC-SIFT descriptor is calculated for image classification. The experiment results indicate that (1) contrast between objects and background can be enhanced on the ICA-based color space and (2) the CIC-SIFT descriptor outperforms other conventional color SIFT descriptors on image classification.

Generalized N-dimensional independent component analysis and its application to multiple feature selection and fusion for image classification

We propose a multilinear independent component analysis (ICA) framework called generalized N-dimensional ICA (GND-ICA) by extending the conventional linear ICA based on the multilinear algebra. Unlike the linear ICA that only treats one-dimensional data, the proposed GND-ICA treats N-dimensional data as a tensor without any preprocess of data vectorization. We furthermore introduce two types of GND-ICA solutions and analyze their efficiency and effectiveness. As an application, the GND-ICA can be used for multiple feature fusion and representation for color image classification. Many features extracted from a given image are constructed as a tensor. The feature tensor can be effective represented by GND-ICA. Compared with the conventional linear subspace learning methods, GND-ICA is capable of obtaining more distinctive representation for color image classification.

A multi-agent system architecture to classify colour images

Colour image classification plays an important role in computer vision and pattern recognition. Traditional classification research mainly focuses on developing novel techniques that are efficient for image representation or classification. By processing considerable visual information, human can handle the complicated classification tasks quite effectively. Inspirited by the structure of the visual cortex, we propose a multi-agent colour image classification architecture (MACICA). Agents within a multi-agent system (MAS) architecture are programmed to deliver specific image classification capabilities. The MACICA provides an efficient classification output by sharing knowledge, communication and team work. The architecture is flexible and dynamic, while the platform has produced encouraging results, which are presented in the paper.

AN AGENT-ORIENTED APPROACH FOR IMAGE CLASSIFICATION WITH ICA-COLOR SIFT

This paper discusses the research conducted on developing a Multi-Agent System (MAS) for solving an image classification task. The aim of this research is to equip agents in MAS with reusable autonomous capabilities. The system provides a flexible framework for developing the communication aspects within an agent-oriented architecture to program agents that dynamically acquire functionality at runtime using event based messaging. In this research agents are equipped with unique image processing capabilities and required to interact and cooperate to achieve the goal. Complementary research on a variety of agent tools (specifically JACK, JADE and CIAgent) and communication languages (ACL, KQML, FIPA and SOAP) has been reviewed to glean knowledge that enables these agents to adapt those capabilities. The system has generated encouraging results.

Independent component analysis of color SIFT for Image Classification

This paper addresses the problems of feature selection and feature fusion. For the feature selection, the color SIFT descriptors in the independent components are ordered for image classification. To select distinctive and compact independent components (IC) of the color SIFT descriptors, we propose two ordering approaches based on variation: (1) Local ordering approaches (the localization-based ICs ordering and the sparseness-based ICs ordering) and (2) Global selection approach (PCA-based ICs selection).We evaluate the performance of proposed methods on object and scene databases, and obtain the following two main results. First, the proposed methods are able to obtain acceptable classification results in comparison with original color SIFT descriptors. Second, the highest classification rate can be obtained by using the global selection method in the scene database, while the local ordering methods give the best performance for the object database. For the aspect of feature fusion, tensor-based ICA is utilized to consider the relationship between different features. This obtains compact and distinctive representation of images for effective image classification.