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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Comparison of the resultant images obtained by using the Raman hyperspectral image; (a) original picture of seed samples, (b) representative Raman images at 1076.8 cm−1, (c) a band-ratio image (1076.8 cm−1/437 cm−1), (d) a binary band-ratio image with a threshold value of 1.03.