  This paper proposes the use of an event camera as a component of a vision
system that enables counting of fast-moving objects - in this case, falling
corn grains. These type of cameras transmit information about the change in
brightness of individual pixels and are characterised by low latency, no motion
blur, correct operation in different lighting conditions, as well as very low
power consumption. The proposed counting algorithm processes events in real
time. The operation of the solution was demonstrated on a stand consisting of a
chute with a vibrating feeder, which allowed the number of grains falling to be
adjusted. The objective of the control system with a PID controller was to
maintain a constant average number of falling objects. The proposed solution
was subjected to a series of tests to determine the correctness of the
developed method operation. On their basis, the validity of using an event
camera to count small, fast-moving objects and the associated wide range of
potential industrial applications can be confirmed.
