Classification of Processing Damage in Sugar Beet (Beta vulgaris) Seeds by Multispectral Image Analysis

Abstract

The pericarp of monogerm sugar beet seed is rubbed off during processing in order to produce uniformly sized seeds ready for pelleting. This process can lead to mechanical damage, which may cause quality deterioration of the processed seeds. Identification of the mechanical damage and classification of the severity of the injury is important and currently time consuming, as visual inspections by trained analysts are used. This study aimed to find alternative seed quality assessment methods by evaluating a machine vision technique for the classification of five damage types in monogerm sugar beet seeds. Multispectral imaging (MSI) was employed using the VideometerLab3 instrument and instrument software. Statistical analysis of MSI-derived data produced a model, which had an average of 82% accuracy in classification of 200 seeds in the five damage classes. The first class contained seeds with the potential to produce good seedlings and the model was designed to put more limitations on seeds to be classified in this group. The classification accuracy of class one to five was 59, 100, 77, 77 and 89%, respectively. Based on the results we conclude that MSI-based classification of mechanical damage in sugar beet seeds is a potential tool for future seed quality assessment.

Non-destructive identification of single hard seed via multispectral imaging analysis in six legume species

“…Then, the attributes of the seeds such as morphological traits and main spectral features of all individual seeds were extracted from the image analysis and processing. The morphological traits included area, length, width, Width/Length Ratio, compactness circle, compactness ellipse, BetaShape a, BetaShape b, vertical skewness, CIELab L*, CIELab a*, CIELab b*, saturation, hue and vertical orientation [19,35]. Explanation of morphological traits were listed in Additional file 4: Table S1.…”

The effects of high oxygen partial pressure on vegetable Allium seeds with a short shelf-life

“…The ability to repair accumulated oxidative damage during seed imbibition (antioxidant systems, DNA ligases, O-methyltransferases), as well as the biochemical, biomechanical and micromorphological properties of the protecting seed and fruit coat layers are important in determining seed quality (Gardarin et al 2010;Mene-Saffrane et al 2010;Waterworth et al 2010;Sano et al 2016;Steinbrecher and Leubner-Metzger 2017). It is known for many crop species that mechanical damage including cracks of the seed coat through threshing or shrinkage during drying leads to a reduction in seed quality and viability (Mohamed-Yasseen et al 1994;Pedretti et al 2017;Salimi and Boelt 2019). The internal oxygen concentration inside a seed depends on the permeability of the seed coats for gases and on the ambient oxygen concentration (Hermann et al 2007;Borisjuk and Rolletschek 2009;Schwember and Bradford 2011).…”

The biochemistry underpinning industrial seed technology and mechanical processing of sugar beet

“…In this work, we focus on two processing treatments, polishing and washing. Polishing is used to remove parts of the pericarp tissue, resulting in a fruit size and shape which is suitable, after assessment for any damage to the seed within (Salimi and Boelt 2019), for pelleting (Draycott 2006; Halmer 2008; Kockelmann et al 2010; Pedrini et al 2017). Partial removal of the pericarp by polishing also leads to an improved germination performance.…”