Abstract

During the last decade, the exponential increase of multimedia and remote sensing image archives, the fast expansion of the world wide web, and the high diversity of users have yielded concepts and systems for successful content-based image retrieval and image information mining. Image data information systems require both database and visual capabilities, but there is a gap between these systems. Database systems usually do not deal with multidimensional pictorial structures and vision systems do not provide database query functions. In terms of these points, the evaluation of content-based image retrieval systems became a focus of research interest. One can find several system evaluation approaches in literature, however, only few of them go beyond precision-recall graphs and do not allow a detailed evaluation of an interactive image retrieval system. Apart from the existing evaluation methodologies, we aim at the overall validation of our knowledge-driven content-based image information mining system. In this paper, an evaluation approach is demonstrated that is based on information-theoretic quantities to determine the information flow between system levels of different semantic abstraction and to analyze human-computer interactions.

Highlights

  • In recent years, the growth of data collected and stored in archives and the access via the world wide web has greatly exceeded our ability to significantly extract user-relevant information from the data

  • We ingested several datasets in the knowledge-driven image information mining (KIM) system that had been used for studying a flooding disaster in Mozambique

  • In this paper we demonstrated the evaluation of a probabilistic knowledge-driven image information mining system using information-theoretic measures

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Summary

INTRODUCTION

The growth of data collected and stored in archives and the access via the world wide web has greatly exceeded our ability to significantly extract user-relevant information from the data This has resulted in combined efforts to develop new methods and concepts to manage large volumes of data: content-based image retrieval(CBIR) [1], data mining [2], knowledge discovery in databases [3], and information visualization. Further development in image information mining depends on the capability to carefully evaluate the image retrieval and image understanding functions and methods Such an evaluation should include the technical (objective) quality of a system as well as user-related (subjective) concepts.

KNOWLEDGE-DRIVEN IMAGE INFORMATION MINING
MEASURES OF INFORMATION
Shannon’s measure of information
Kullback-Leibler divergence
INFORMATION BETWEEN DIFFERENT SYSTEM LEVELS
Image space versus class space
D Landsat TM
Image space versus semantic label space
EVALUATION OF HUMAN-MACHINE INTERACTIONS
Target structure classification and identification
Convergence of learning process
Matching user-specific semantic labels
CONCLUSIONS

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