Home > Search Results: Yaroslavsky, Leonid P.
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Articles, 4 records found
Articles 4 records found  
1.
3 p, 93.3 KB Integration in the Fourier domain for restoration of a function from its slope : comparison of four methods / Campos Coloma, Juan (Universitat Autònoma de Barcelona. Departament de Física) ; Yaroslavsky, Leonid P. (Tel Aviv University. Department of Interdisciplinary Studies) ; Moreno Soriano, Alfonso (Universitat Autònoma de Barcelona. Departament de Física) ; Yzuel Giménez, María Josefa (Universitat Autònoma de Barcelona. Departament de Física)
In some measurement techniques the profile, f(x), of a function should be obtained from the data on measured slope f'(x) by integration. The slope is measured in a given set of points, and from these data we should obtain the profile with the highest possible accuracy. [...]
2002 - 10.1364/OL.27.001986
Optics letters, Vol. 27, No. 22 (15 November 2002) , p. 1986-1988  
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2.
3 p, 481.8 KB Input-image homogenization as a method to improve a correlator's discrimination capability / Yaroslavsky, Leonid P. (Tel Aviv University. Department of Interdisciplinary Studies) ; López Coronado, Octavio (Universitat Autònoma de Barcelona. Departament de Física) ; Campos Coloma, Juan (Universitat Autònoma de Barcelona. Departament de Física)
We propose an input-image preprocessing method consisting of homogenization of the image to improve the discrimination capability of a correlation-based recognition process. This method is an approximation of the optimal filter. [...]
1998 - 10.1364/OL.23.001129
Optics letters, Vol. 23, No. 14 (15 July 1998) , p. 1129-1131  
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3.
3 p, 1016.2 KB Color pattern recognition with circular component whitening / Moreno, Ignacio (Universitat Autònoma de Barcelona. Departament de Física) ; Kober, Vitaly (Universitat Autònoma de Barcelona. Departament de Física) ; Lashin, Vladimir (Universitat Autònoma de Barcelona. Departament de Física) ; Campos Coloma, Juan (Universitat Autònoma de Barcelona. Departament de Física) ; Yaroslavsky, Leonid P. (Tel Aviv University. Department of Interdisciplinary Studies) ; Yzuel Giménez, María Josefa (Universitat Autònoma de Barcelona. Departament de Física)
Polychromatic object recognition based on circular whitening preprocessing of red-green-blue components and multichannel matched filtering is described. Computer simulations and experimental results are provided to facilitate recognizing a color target among objects of similar shape but with different color contents. [...]
1996 - 10.1364/OL.21.000498
Optics letters, Vol. 21, No. 7 (1 April 1996) , p. 498-500  
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4.
3 p, 463.8 KB Optimal filter approximation by means of a phase-only filter with quantization / Kober, Vitaly (Universitat Autònoma de Barcelona. Departament de Física) ; Yaroslavsky, Leonid P. (National Institutes of Health (Bethesda, Estats Units d'Amèrica)) ; Campos Coloma, Juan (Universitat Autònoma de Barcelona. Departament de Física) ; Yzuel Giménez, María Josefa (Universitat Autònoma de Barcelona. Departament de Física)
Approximate filters based on a phase-only filter for reliable recognition of objects are proposed. Good light efficiency and discrimination capability close to that of the optimal filter can be obtained. [...]
1994 - 10.1364/OL.19.000978
Optics letters, Vol. 19, No. 13 (1 July 1994) , p. 978-980  
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