Wm. Ren et al., ONLINE FAST MEASUREMENT OF SECTION SIZES OF 3-DIMENSIONAL OBJECTS USING BINARY IMAGE-ANALYSIS, Optical engineering, 37(6), 1998, pp. 1740-1745
We propose a method for online measurement of section sizes of hot-rol
led sections. We consider two main points. First, section sizes of the
measured workpiece depend on its section outline; here the section ou
tline is presented by perpendicularly intersecting the workpiece with
an optical plane. Second, online measurement of section sizes is almos
t a real-time process; hereto shorten the measurement period, the reco
rding process and the initial extraction process of one section outlin
e are combined by recording it as three 2-D binary patterns. These pat
terns come from three areas of the section outline and are sufficient
for calculating the section sizes. The experimental performance of thi
s method was tested and verified in our laboratory and in a rolling mi
ll in China. A set of the tests are presented. (C) 1998 Society of Pho
to-Optical Instrumentation Engineers. [S0091-3286(98)00606-0].