Rapid Measurement of Soybean Seed Viability Using Kernel-Based Multispectral Image Analysis
Links to Fileshttps://www.mdpi.com/1424-8220/19/2/271
MetadataShow full item record
Type of Work16 pages
Citation of Original PublicationInsuck Baek , Dewi Kusumaningrum , Lalit Mohan Kandpal , Santosh Lohumi , Changyeun Mo , Moon S. Kim 2 and Byoung-Kwan Cho , Rapid Measurement of Soybean Seed Viability Using Kernel-Based Multispectral Image Analysis, Sensors 2019, 19(2), 271; https://doi.org/10.3390/s19020271
RightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
Attribution 4.0 International (CC BY 4.0)
variable importance in projection
Viability is an important quality factor influencing seed germination and crop yield. Current seed-viability testing methods rely on conventional manual inspections, which use destructive, labor-intensive and time-consuming measurements. The aim of this study is to distinguish between viable and nonviable soybean seeds, using a near-infrared (NIR) hyperspectral imaging (HSI) technique in a rapid and nondestructive manner. The data extracted from the NIR–HSI of viable and nonviable soybean seeds were analyzed using a partial least-squares discrimination analysis (PLS-DA) technique for classifying the viable and nonviable soybean seeds. Variable importance in projection (VIP) was used as a waveband selection method to develop a multispectral imaging model. Initially, the spectral profile of each pixel in the soybean seed images was subjected to PLS-DA analysis, which yielded a reasonable classification accuracy; however, the pixel-based classification method was not successful for high accuracy detection for nonviable seeds. Another viability detection method was then investigated: a kernel image threshold method with an optimum-detection-rate strategy. The kernel-based classification of seeds showed over 95% accuracy even when using only seven optimal wavebands selected through VIP. The results show that the proposed multispectral NIR imaging method is an effective and accurate nondestructive technique for the discrimination of soybean seed viability.
The following license files are associated with this item:
- Creative Commons