Estimation of apple fruit surface area
作者:
Murray Clayton,
NevinD. Amos,
NigelH. Banks,
R. Hugh Morton,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1995)
卷期:
Volume 23,
issue 3
页码: 345-349
ISSN:0114-0671
年代: 1995
DOI:10.1080/01140671.1995.9513908
出版商: Taylor & Francis Group
关键词: apple;Malusdomestica Borkh.;‘Royal Gala’;‘Braeburn’;‘Red Delicious’;‘Granny Smith’;surface area;estimation;regression;finite element;sphere;ellipsoid;mass;volume;dimensional measurement
数据来源: Taylor
摘要:
Surface areas of fruits and vegetables are often estimated by assuming that they resemble a shape from which surface area can be mathematically calculated. Two such models, sphere and ellipsoid, were compared to three alternative approaches for estimating surface areas of apple fruit(Malus domesticaBorkh.) of four cultivars ('Royal Gala’, ‘Braeburn’, ‘Red Delicious’, and ‘Granny Smith'). Sphere and ellipsoid models underestimated actual surface area by 15 and 18%, respectively, with poor correlation between predicted surface area and actual surface area (estimated by measuring the area of adhesive tape required to cover the fruit surface). A method based on finite elements marginally overestimated surface area but reliably predicted surface area of small ‘Royal Gala’ and ‘Braeburn’ apples and had reasonably close correlation with actual surface area. Non‐linear regression models, developed from the very strong correlation between actual surface area and both fruit mass and volume, were the most accurate predictors of fruit surface area of the methods tested.
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