A descriptor of speckle textures using box fractal dimension curve

Rabal, H.; Grumel, Eduardo; Cap, Nelly; Buffarini, L.; Trivi, Marcelo

doi:10.1016/j.optlaseng.2018.02.006

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…The speckle caused by seed surface laser scattering -BSL (Rabal et al, 2018) is quite different from the quasifractal cold plasma -GDV patterns (Korotkov et al, 2010). The particles presented in BSL images have very similar fractality pattern sizes and this also occurs in GDV but with larger scale format.…”

Section: Data Frommentioning

confidence: 90%

“…GDV photonic technologies or "gas discharge visualization" (Kononenko, Bevk, Sadikov & Sajn, 2004;Korotkov, Matravers, Orlov & Williams, 2010) and BSL laser-camera coupling or "biospeckle laser" (Braga et al, 2007;Rabal, Grumel, Cap, Buffarini & Trivi, 2018) are suitable cost-effective and easy to implement in laboratory routines and detect interference patterns due to UHD. Applying appropriate algorithms in arrangement with statistical analysis can equate the effects captured by images with the biological effects of UHD (Kononenko et al, 2004;Rabelo, Enes, Junior & Fabbro, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The BSL Research, Society andDevelopment, v. 10, n. 2, e26110212462, 2021 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v10i2.12462 technique captures images about biological laser effect, which emits ultraweak and coherent light over an object under analysis, generating a scattered light image. UHD signals over seeds can be viewed in a pixel matrix, translated into gray-level intensity patterns of the image (Braga et al, 2007;Rabal et al, 2018). The GDV method, in turn, forms the image of interest from the gas-sensitive electric discharge around the sample, which remains weakly ionized, without altering the sample, but can be rigorously analyzed (Korotkov et al, 2010) The electron drift velocity in GDV imaging reveals a cold plasma conductivity proportional to the current density of the electric field force stimulated by high voltage and low amperage (Korotkov et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Biophototic in azuki bean seeds treated with ultrahigh dilutions

Zanco

Boff

Werner

et al. 2021

RSD

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Seed analysis is usually performed by destructive samples with time-consuming methods. Treatments that improve seed vigor are suggested based on bioassays and protocols for most plants. This includes the use of images to assess quality and pro- vide information that supports decisions. However, instrumental cost has not made these technologies widely used. The objective of this research was to study biophotonic images generated by low cost technologies - cold plasma scanner or gas discharge visualization (GDV) and speckle laser (BSL) - to evaluate the germination of adzuki beans seeds treated with ultrahigh dilutions (UHD). The research was carried out at the EPAGRI Homeopathy and Plant Health Laboratory, with a post-graduate support at the State University of Santa Catarina (UDESC). The images of the seeds were diagnosed mathematically, before and after germination, using “Local Connected Fractal Dimension Analysis” (LCFD) and “Time History Speckle Pattern” (THSP). The results show that the images identify the effects of high dilution - Bryonia alba and Silicea terra, at 6, 12 and 30 CH (centesimal hahnemannian dilution order) - on the seeds of azuki beans. There were statistically differences (p < 1% and p < 5%) of the treatments in relation to the control: water. Only Silicea terra 30CH inhibited seed germination. The signals found in the BSL images of the seeds were superior to the GDV signals, showing an average of 89% correct responses (BSL) against 87% (GDV).

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Section: Data Frommentioning

confidence: 90%