Feature Extraction and Image Processing

308 Feature Extraction and Image Processing

recent survey (Reed, 1993), which is certainly more recent than the earlier surveys (Wechsler,

1980; Davis, 1981), but it is a large field of work to survey with many applications. Even

though it is a large body of work, it is still only a subset of the field of pattern recognition.

In fact, a recent review of pattern recognition gives many pointers to this fascinating and

extensive field (Jain, 2000). In this text, the general paradigm is to extract features that

describe the target and then to classify it for purposes of recognition. In vision-based

systems such approaches are used in biometrics: ways to recognise a person’s identity by

some innate human properties. The biometrics of major recent interest ...