Wiley Interscience Digital Image Processing 4th Edition Feb 2007.pdf

DIGITAL IMAGE

PROCESSING

DIGITAL IMAGE

PROCESSING

PIKS Scientific Inside

Fourth Edition

WILLIAM K. PRATT

PixelSoft, Inc.

Los Altos, California

WILEY-INTERSCIENCE

A John Wiley & Sons, Inc., Publication

About the cover:

The first image on the left is the peppers_gamma original color image.

The second image is the edge map of the luma component of the first image produced by a derivative of

Gaussian edge detector.

The third image is the cat original color image.

The fourth image is the spatial gain image of the luma component of the cat image produced by a Wallis

statistical differencing operator.

The fifth image is the result of Wallis processing on the luma component and amplitude stretching of the

chrominance components of the cat image.

The lower right image is a sharpened version of the original image obtained by subtracting an amplitude

weighted version of the blurred image from a weighted version of the original image. The processing

technique is called unsharp masking.

Published by John Wiley & Sons, Inc., Hoboken, New Jersey.

Published simutaneously in Canada.

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Library of Congress Cataloging-in-Publication Data:

Pratt, William K.

Digital image processing : PIKS Scientific inside / William K. Pratt.—, 4th ed.

p. cm.

“A Wiley-Interscience publication.”

Includes bibliographical references and index.

ISBN: 978-0-471-76777-0

1. Image processing—Digital techniques. I. Title.

TA1632.P7 2007

621.36'7—dc22

2006046397

Printed in the United States of America.

10 9 8 7 6 5 4 3 2 1

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