Journal article
Autoencoder-aided measurement of concentration from a single line of speckle
We demonstrate that a single 6mm line sample of simulated near-field speckleintensity suffices for accurate estimation of the concentration of dielectric micro-particles over a range from 104 to 6 · 106 particles per ml. For this estimation, we analyze the speckle using both standard methods (linear principal component analysis, support vector machine (SVM)) and a neural network, in the form of a sparse stacked autoencoder (SSAE) with a softmax classifier or with an SVM.
Using an SSAE with SVM, we classify line speckle samples according to particle concentration with an average accuracy of over 78%, with other methods close behind.
Language: | English |
---|---|
Year: | 2019 |
Pages: | 29098-29123 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.27.029098 |
ORCIDs: | Karamehmedović, Mirza , Sehic, Kenan and Dammann, Bernd |