Implementation of an autofocus algorithm based on searching the best in-focus image into a table-top laser-induced breakdown spectroscopy setup

Jan Novotný; Radomir Malina; Jozef Kaiser; Miroslav Liška; Michaela Galiova; Karel Novotný

doi:10.1117/1.3250206

1 October 2009 Implementation of an autofocus algorithm based on searching the best in-focus image into a table-top laser-induced breakdown spectroscopy setup

Jan Novotný, Radomir Malina, Jozef Kaiser, Miroslav Liška, Michaela Galiova, Karel Novotný

Author Affiliations +

Optical Engineering, Vol. 48, Issue 10, 103604 (October 2009). https://doi.org/10.1117/1.3250206

Abstract

Laser-ablation based spectrochemical analytical methods could be used in applications in which the capability for spatially resolved analysis is required. Such analysis gives a 2-D or 3-D map of the monitored chemical elements. Here we introduce automation of a 2-D surface analysis in the laser-induced breakdown spectroscopy setup by implementation of an autofocus algorithm based on the evaluation of the image sharpness. The most suitable algorithm with respect to its speed, accuracy, and durability against digital noise is chosen by testing different gradient-based methods and methods working in the frequency domain.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Jan Novotný, Radomir Malina, Jozef Kaiser, Miroslav Liška, Michaela Galiova, and Karel Novotný "Implementation of an autofocus algorithm based on searching the best in-focus image into a table-top laser-induced breakdown spectroscopy setup," Optical Engineering 48(10), 103604 (1 October 2009). https://doi.org/10.1117/1.3250206

Published: 1 October 2009

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