**4.2.4 Perimeter**

The perimeter of a feature is a welldefined and familiar geometrical parameter. Measuring a numerical value that really describes the object and these value turns to be easy to determine agricultural products perimeter measurement. Some systems estimate the length of the boundary around the object by counting the pixels but some of them use picture selection method which is based on the selection of the objects manually from images, for investigating perimeter value (Fig. 9.).
