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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 5 — Feb. 10, 2000
  • pp: 796–802

Image distance transforms that use optical correlation

Shuqun Zhang and Mohammad A. Karim  »View Author Affiliations


Applied Optics, Vol. 39, Issue 5, pp. 796-802 (2000)
http://dx.doi.org/10.1364/AO.39.000796


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Abstract

The image distance transform is a time-consuming global operation. We use optical correlation for the fast computation of binary image distance transforms. A joint transform correlator is proposed to implement the algorithm that accommodates the morphological threshold-decomposition concept. The proposed optical processor is programmable for computing Euclidean, city-block, and chessboard distance transforms in real time. Skeletonization by use of the distance transform and the rotation invariance of the Euclidean distance transform are demonstrated.

© 2000 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.4550) Fourier optics and signal processing : Correlators
(200.4560) Optics in computing : Optical data processing
(200.4690) Optics in computing : Morphological transformations

History
Original Manuscript: May 6, 1999
Revised Manuscript: August 17, 1999
Published: February 10, 2000

Citation
Shuqun Zhang and Mohammad A. Karim, "Image distance transforms that use optical correlation," Appl. Opt. 39, 796-802 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-5-796

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