|This research conducted the physical and geometric testes for dried lingams. Image processing techniques were used to measure the major axis, the minor axis, the projected area, and the perimeter of the projected area. The measurement errors of the major axis are smaller than those of the minor axis. The mass of the dried lingams and the lengths of the major and minor axis measured by hands have good linear relationships with the projected area measured by the image processing method. After one-week storage, the shell and the flesh contained 13.1% and 34.6% moisture, respectively. After eight-week storage, the shell and the flesh contained 16.9% and 39.6% moisture, respectively. The aerodynamic test results show that the average terminal velocity is 6m/sec for broken shells and 10.1m/sec for shelled fruits. The shearing test results reveal that the average shearing force is 2.6kg when the interstice between the shearing blade and the fruit fixing seat is 9mm and it is 3.1kg when the interstice is 10mm.