September 2013
Beginner
756 pages
19h 35m
English
Content preview from Introduction to Digital Image Processing
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Introduction to Digital Image Processing by William K. Pratt
Copyright © 2013 by CRC Press
IMAGE FEATURE EXTRACTION
An image feature is a distinguishing primitive characteristic or attribute of an image.
Some features are natural in the sense that such features are defined by the visual
appearance of an image, while other, so called, artificial features result from specific
manipulations of an image. Natural features include the luminance of a region of
pixels and gray scale textural regions. Image amplitude histograms and spatial fre-
quency spectra are examples of artificial features.
Image features are of major importance in the isolation of ...