Perceptual Digital Imaging

12

Concept-Based Multimedia Processing Using Semantic and Contextual Knowledge

Evaggelos Spyrou, Phivos Mylonas and Stefanos Kollias

12.1 Introduction

12.2 Motivation and Overview

12.3 Image Analysis Based on Regions and Context

12.3.1 The Bag-of-Words Model

12.3.2 The Role of Context

12.4 Image Description and High-Level Concept Detection Using a Region Thesaurus

12.4.1 Low-Level Feature Extraction

12.4.2 Construction of a Region Thesaurus

12.4.3 Construction of Model Vectors

12.4.4 High-Level Feature Detection

12.5 Visual Context Optimization

12.5.1 Scene Context

12.5.1.1 A Scene Context Knowledge Model

12.5.1.2 Scene Context Optimization

12.5.2 Region Type Context

12.5.2.1 A Region Type Knowledge Model

12.5.2.2 Relations between Region Types ...