A system and process for measuring paper formation characteristics in real
time is disclosed. The system comprises apparatus used in a papermaking
process, and includes a rotating forming fabric having an upper and lower
surface. A paper slurry is deposited upon the upper surface of the moving
forming fabric to prepare a wet paper web. The wet paper web typically
moves at a high rate of speed as it rides along upon the surface of the
forming fabric. Light is transmitted from a light source to the surface
of the wet paper web, and then reflected from the surface of the wet
paper web to a camera. An image is formed corresponding to the pattern of
the reflected light, and in some instances data generated from the
reflected light may be compared to other values to provide a feedback
loop to adjust the parameters of the papermaking process in real time.