A Novel Algorithm for Digital Lithological Mapping-Case Studies in Sri Lanka's Mineral Exploration

no code implementations • 1 Apr 2024 • R. M. L. S. Ramanayake, D. Fernando, D. Wickramasinghe, D. Y. L. Ranasinghe, G. M. R. I. Godaliyadda, H. M. V. R. Herath, M. P. B. Ekanayake, A. Senaratne, Fadi Kizel

The results of satellite-based spectral imaging analysis were corroborated with X-ray diffraction (XRD) and Magnetic Separation (MS) analysis of soil samples collected from those sites via field surveys.

X-Ray Diffraction (XRD)

Transmittance Multispectral Imaging for Reheated Coconut Oil Differentiation

no code implementations • 28 Aug 2021 • D. Y. L. Ranasinghe, H. M. H. K. Weerasooriya, S. Herath, M. P. B. Ekanayake, H. M. V. R. Herath, G. M. R. I. Godaliyadda, T. Madhujith

Accordingly, the proposed work closes the gap for using multispectral imaging for oil reheating and proposes a novel algorithm for unsupervised detection of critical property changes in the oil.

Clustering

Quantitative Assessment of Adulteration and Reuse of Coconut Oil Using Transmittance Multispectral Imaging

no code implementations • 30 Nov 2020 • S. Herath, H. K. Weerasooriya, D. Y. L. Ranasinghe, W. G. C. Bandara, H. M. V. R. Herath, G. M. R. I. Godaliyadda, M. P. B. Ekanayake, Terrence Madhujith

Therefore, we propose an imaging system hardware and image processing-based algorithm to estimate the adulteration of coconut oil with palm oil as the adulterant.

Clustering

Constrained Nonnegative Matrix Factorization for Blind Hyperspectral Unmixing incorporating Endmember Independence

no code implementations • 2 Mar 2020 • E. M. M. B. Ekanayake, H. M. H. K. Weerasooriya, D. Y. L. Ranasinghe, S. Herath, B. Rathnayake, G. M. R. I. Godaliyadda, M. P. B. Ekanayake, H. M. V. R. Herath

Hyperspectral unmixing (HU) has become an important technique in exploiting hyperspectral data since it decomposes a mixed pixel into a collection of endmembers weighted by fractional abundances.

Hyperspectral Unmixing