The experimental results show that this method is feasible on principle, and has directive meaning for realization of on-line measurement of the height of foaming slag on site.

This paper describes a computer visual technique for on-line measurement of the height of foaming slag in blast furnace which simulation experiment has been done in laboratory.

This measurement called the fundal height is used to determine fetal age and should equal in centimeters the number of weeks you are pregnant (within 2 centimeters ).