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http://dx.doi.org/10.5307/JBE.2004.29.3.275

Development of a Pig's Weight Estimating System Using Computer Vision  

엄천일 (Dept. of Biosystems and Agricultural Engineering, Inst. of Ag. Sci. and Tech. Chonnam National University)
정종훈 (Dept. of Biosystems and Agricultural Engineering, Inst. of Ag. Sci. and Tech. Chonnam National University)
Publication Information
Journal of Biosystems Engineering / v.29, no.3, 2004 , pp. 275-280 More about this Journal
Abstract
The main objective of this study was to develop and evaluate a model for estimating pigs weight using computer vision for improving the management in Korean swine farms in Korea. This research was carried out in two steps: 1) to find a model that relates the projection area with the weight of a pig; 2) to implement the model in a computer vision system mainly consisted of a monochrome CCD camera, a frame grabber and a computer system for estimating the weight of pigs in a non-contact, real-time manner. The model was developed under an important assumption there were no observable genetic differences among the pigs. The main results were: 1) The relationship between the projection area and the weight of pigs was W = 0.0569 ${\times}$ A - 32.585($R^2$ = 0.953), where W is the weight in kg; A is the projection area of a pig in $\textrm{cm}^2$; 2) The model could estimate the weight of pigs with an error less than 3.5%.
Keywords
Projection area; Computer vision; Non-contact; Weight estimating system;
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