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Dr. Roberto Hirata
at Univ de São Paulo
SPIE Involvement:
Author
Publications (4)
Proceedings Article | 8 May 2001 Paper
Image restoration by multiresolution nonlinear filters
Proceedings Volume 4304, (2001) https://doi.org/10.1117/12.424980
KEYWORDS: Optimal filtering, Nonlinear filtering, Image filtering, Error analysis, Spatial resolution, Linear filtering, Digital filtering, Image restoration, Image resolution, Binary data
Proceedings Article | 5 March 1999 Paper
Optimal range-domain window filters
Roberto Hirata, Edward Dougherty, Junior Barrera
Proceedings Volume 3646, (1999) https://doi.org/10.1117/12.341100
KEYWORDS: Linear filtering, Optimal filtering, Electronic filtering, Nonlinear filtering, Filtering (signal processing), Statistical analysis, Error analysis, Digital filtering, Signal processing, Gaussian filters
Proceedings Article | 6 April 1998 Paper
OCR based on mathematical morphology
Junior Barrera, Routo Terada, Roberto Lotufo, Nina Hirata, Roberto Hirata, F. Zampirolli
Proceedings Volume 3304, (1998) https://doi.org/10.1117/12.304600
KEYWORDS: Optical character recognition, Image segmentation, Image processing, Mathematical morphology, Information fusion, Prototyping, Image compression, Mathematics, System integration, Picture Archiving and Communication System
SPIE Journal Paper | 1 January 1998
MMach: a mathematical morphology toolbox for the KHOROS system
Junior Barrera, Gerald Banon, Roberto Lotufo, Roberto Hirata
JEI, Vol. 7, Issue 01, (January 1998) https://doi.org/10.1117/12.10.1117/1.482637
KEYWORDS: Binary data, Image segmentation, Image filtering, Mathematical morphology, Image processing, Visualization, Image enhancement, Reconstruction algorithms, Image visualization, Human-machine interfaces
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