<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>8672</REFNUM><AUTHORS><AUTHOR>Ju,X.</AUTHOR><AUTHOR>Siebert,J.P.</AUTHOR><AUTHOR>McFarlane,N.J.B.</AUTHOR><AUTHOR>Tillett,R.D.</AUTHOR></AUTHORS><YEAR>2007</YEAR><TITLE>Ham Volume Measurement of Live Pigs Using 3D Stereo Photogrammetry</TITLE><PLACE_PUBLISHED>Journal of Experimental Mechanics, Vol. 22, No. 4, August 2007</PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><LABEL>Ju:2007:8672</LABEL><KEYWORDS><KEYWORD>3D Stereo Photogrammetry; shape measuerement</KEYWORD></KEYWORDS<ABSTRACT>A high-resolution 3D stereo photogrammetry system has been developed and it succeeded in capturing 3-D shapes of live pigs for pig husbandry research. For investigation of relationship between diet and growth of the pigs, 32 pigs were divided into high-lysine and low-lysine diet groups. Each pig was imaged once per week for 14 weeks. The system consists of three stereo pairs, which capture stereo images from side, top and rear views. Image processing software has been developed which included camera calibration, stereo image matching and range image integration to reconstruct 3D shapes of the pigs for animal science analysis. A conformation algorithm was proposed to deform a generic leg model to the shapes of pigs to extract quantitative ham volume weekly measurements from the shapes. The system has proven to be accurate and reliable during the experiments.</ABSTRACT></RECORD></RECORDS></XML>