Nonlinear morphological correlation: optoelectronic implementation.

An optoelectronic implementation of the nonlinear morphological correlation by use of a threshold-decomposition technique and a joint transform correlator architecture is presented. This nonlinear morphological correlation provides improved image detection compared with standard linear optical pattern-recognition correlation methods. It also offers a more robust detection of low-intensity images in the presence of high-intensity patterns to be rejected.

[1]  C Ferreira,et al.  Optoelectronic morphological image processor. , 1993, Optics letters.

[2]  Francis T. S. Yu,et al.  Comparison of vander lugt and joint transform correlators , 1990 .

[3]  Petros Maragos,et al.  Morphological filters-Part I: Their set-theoretic analysis and relations to linear shift-invariant filters , 1987, IEEE Trans. Acoust. Speech Signal Process..

[4]  A. B. Vander Lugt,et al.  Signal detection by complex spatial filtering , 1964, IEEE Trans. Inf. Theory.

[5]  J. Fitch,et al.  Median filtering by threshold decomposition , 1984 .

[6]  Edward J. Coyle,et al.  Stack filters , 1986, IEEE Trans. Acoust. Speech Signal Process..

[7]  Jaakko Astola,et al.  An Introduction to Nonlinear Image Processing , 1994 .

[8]  J. Goodman,et al.  A technique for optically convolving two functions. , 1966, Applied optics.

[9]  Stuart A. Mills,et al.  Performance of a second-generation miniature ruggedized optical correlator module , 1997 .

[10]  Richard O. Duda,et al.  Pattern classification and scene analysis , 1974, A Wiley-Interscience publication.

[11]  J P Allebach,et al.  Optical median filtering using threshold decomposition. , 1987, Applied optics.

[12]  Jean Serra,et al.  Image Analysis and Mathematical Morphology , 1983 .

[13]  David Casasent,et al.  Optical implementation of gray-scale morphology , 1992, Electronic Imaging.

[14]  William T. Rhodes,et al.  Nonlinear Optical Image Filtering By Time-Sequential Threshold Decomposition , 1988 .

[15]  Petros Maragos,et al.  Optimal Morphological Approaches To Image Matching And Object Detection , 1988, [1988 Proceedings] Second International Conference on Computer Vision.

[16]  D A Gregory,et al.  Comparison of detection efficiencies for VanderLugt and joint transform correlators. , 1990, Applied optics.

[17]  G. Turin,et al.  An introduction to matched filters , 1960, IRE Trans. Inf. Theory.

[18]  R. Schafer,et al.  Morphological systems for multidimensional signal processing , 1990, Proc. IEEE.

[19]  Petros Maragos.  Morphological correlation and mean absolute error criteria , 1989, International Conference on Acoustics, Speech, and Signal Processing,.

[20]  Colin Soutar,et al.  Measurement of the complex transmittance of the Epson liquid crystal television , 1994 .

[21]  Petros Maragos,et al.  Morphological filters-Part II: Their relations to median, order-statistic, and stack filters , 1987, IEEE Trans. Acoust. Speech Signal Process..

[22]  Javier Garcia,et al.  Programmable opticaldigital processor for rank order and morphological filtering , 1995 .