Abstract
The leaf shape and leaf area measurement are crucial in plant growth modeling. The castor bean leaf is large, palm-shaped with multiple clefts. The leaf shape simulation and leaf area estimation were less studied. The circular model and nonrectangular hyperbolic model were developed to describe the standard leaf shape of castor bean in this study, providing a model for simulating the leaf shape and a nondestructive way for estimating the leaf area respectively. In addition, a formula was established to estimate the leaf area by the parameter of the standard leaf shape of castor bean. Based on validation results, the circular model fits the landmarks and nonrectangular hyperbolic model fits the lobe margins very well. The leaf area was accurately estimated by using the established formula. This study could provide a theoretical reference for leaf visualization, a nondestructive and easy way to estimate the leaf area for other complex leaves with multiple lobes. Keywords: leaf shape, leaf area, geometrical characteristics, mathematical model, image processing, plant growth modeling DOI: 10.25165/j.ijabe.20191204.4040 Citation: Wei H L, Li X M, Li M, Huang H. Leaf shape simulation of castor bean and its application in nondestructive leaf area estimation. Int J Agric & Biol Eng, 2019; 12(4): 135–140.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
The circular model fits the landmarks of castor bean leaf shape.
- Taxon
- castor bean
Ricinus communist0 - Outcome
- fits the landmarkse1
- Comparator
- landmarkse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Leaf shape simulation of castor bean”
e1“Based on validation results, the circular model fits the landmarks and nonrectangular hyperbolic model fits the lobe margins very well.”
Claim · model-written summary
The nonrectangular hyperbolic model fits the lobe margins of castor bean leaves very well.
- Taxon
- castor beanRicinus communist0
- Outcome
- fits the lobe marginse1
- Qualifier
- very welle1
- Comparator
- lobe marginse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Leaf shape simulation of castor bean”
e1“Based on validation results, the circular model fits the landmarks and nonrectangular hyperbolic model fits the lobe margins very well.”
Claim · model-written summary
Leaf area of castor bean was accurately estimated by the established formula.
- Taxon
- castor beanRicinus communist0
- Outcome
- leaf areae2
- Qualifier
- accurately estimated by using the established formulae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Accuracy stated without a comparator or value; coded as observation; needs schema review
Verbatim
t0“Leaf shape simulation of castor bean”
e2“The leaf area was accurately estimated by using the established formula.”