Examples of the sample images captured by CCD camera. The recognized centre-of-gravity in each image is indicated by the midpoint of the green arrow in the red circle. The intersection of yellow lines indicates the reference position. (a) A pellet sample of diameter 10 mm pouched in PE film. (b) A powder sample pouched in PE film of rectangular shape. (c) Broken samples can also be aligned. The samples of (a) and (c) were measured in transmission mode, and that of (b) was measured in fluorescence mode. (d) The sample shape is incorrectly recognized because the sample is very dirty. (e) If there is a sample with a hole, the centre of gravity of the sample shape is in the hole area with no sample (not the real example).