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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 17, Iss. 7 — Jul. 1, 2000
  • pp: 1160–1171

Multiresolution spot detection by means of entropy thresholding

Giuseppe Boccignone, Angelo Chianese, and Antonio Picariello  »View Author Affiliations

JOSA A, Vol. 17, Issue 7, pp. 1160-1171 (2000)

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Many imaging applications deal with the detection of small targets or spots embedded within an inhomogeneous background. We present a method that accomplishes a multiresolution detection on the wavelet-transformed image. The targets are separated from the background by the exploitation of Renyi’s information, which is evaluated at the different decomposition levels of the wavelet transform. The scale-dependent candidate detections are successively combined by means of majority voting for final detection. Connections with results provided in different fields such as multifractal analysis, generalized information measures in scale-space, and cross-entropy analysis in fine-to-coarse transformations are discussed. Detection performance is investigated through an example from medical image analysis.

© 2000 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(100.2000) Image processing : Digital image processing
(100.2960) Image processing : Image analysis
(100.7410) Image processing : Wavelets

Original Manuscript: May 6, 1999
Revised Manuscript: April 3, 2000
Manuscript Accepted: April 3, 2000
Published: July 1, 2000

Giuseppe Boccignone, Angelo Chianese, and Antonio Picariello, "Multiresolution spot detection by means of entropy thresholding," J. Opt. Soc. Am. A 17, 1160-1171 (2000)

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