Reliability of biospeckle image analysis

R. BRAGA JUNIOR, B. OLIVEIRA SILVA, G. RABELO, R. MARQUES COSTA, A. MACHADO ENES, N. CAP, H. RABAL, R. ARIZAGA, M. TRIVI, G. HORGAN

Optics and Lasers in Engineering

Elsevier

Año: 2007 vol. 45 p. 390 - 395

0143-8166

This paper presents an analisys of the time history of speckle patterns (THSP) that is one of the most used procedures to evaluate the biological activity by biospeckle images. THSPs generated by numerical simulations, obtained in a controlled drying of paint experiment and in dead and alive bean seeds under ilumination were evaluated. We used first- and second-order statistics of the dynamic speckle patterns for different time and spatial amounts of data. We have tested both square and rectangular windows in the space time domain. The results show the agreement with a theoretical curve and comparisons between different window size.