Estimation of Body Weight for Korean Cattle Using Three-Dimensional Image

Purpose This study was conducted to estimate the body weight of Korean cattle (Hanwoo) using three-dimensional image. Methods A time-of-flight camera and a stereo vision camera were used to acquire top-view images for Hanwoo. Multiple linear regression model incorporating body dimensions and age was developed to estimate the body weight. Results The prediction models with or without age variable were determined. Incorporating age variable that correlates with body weight improved the coefficient of determination for both TOF images and stereo vision images. The weight estimation error was greatly reduced under the condition that calves less than 6 months old were excluded. Conclusions It was concluded that 3-D image is a promising technique for estimating the body weight of Hanwoo cattle.