Journal
AGRONOMY-BASEL
Volume 9, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/agronomy9070390
Keywords
image analysis; machine learning; algorithms; computer vision
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Funding
- Russian Science Foundation [17-74-10148, 0324-2019-0040]
- Russian Science Foundation [17-74-10148] Funding Source: Russian Science Foundation
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Spike shape and morphometric characteristics are among the key characteristics of cultivated cereals associated with their productivity. Identification of the genes controlling these traits requires morphometric data at harvesting and analysis of numerous plants, which could be automatically done using technologies of digital image analysis. A method for wheat spike morphometry utilizing 2D image analysis is proposed. Digital images are acquired in two variants: a spike on a table (one projection) or fixed with a clip (four projections). The method identifies spike and awns in the image and estimates their quantitative characteristics (area in image, length, width, circularity, etc.). Section model, quadrilaterals, and radial model are proposed for describing spike shape. Parameters of these models are used to predict spike shape type (spelt, normal, or compact) by machine learning. The mean error in spike density prediction for the images in one projection is 4.61 (similar to 18%) versus 3.33 (similar to 13%) for the parameters obtained using four projections.
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