Extraction of Pig Outline and Estimation of Body Weight by Detection of Multiple Lines Structured Light Using Discrete Fourier Transform

Abstract

Because pig farms are labor intensive, computer vision-based pig weight estimation system that involve robust maintenance-free parts have been developed; with this system, information on the shape of the pig is used to estimate the pig’s weight. While 2D shape information can be useful, 3D information is preferable to ensure more accurate weight estimates. The approach described here uses multiple lines structured light laser projection to extract such 3D shape information. This method allows for the extraction of a clear pig image regardless of the environment and offers more accurate pig weight estimates. This paper introduces the robust image processing system and describes its effectiveness for practical use on pig farms.