|
With recent increase
of a high class and high quality cars, there is
a great demand for more sophisticated inspection
in automobile manufacturing industry. In the manufacturing
process, three dimensional inspection is required
for automotive body panels, white-bodies before
painting and finished-bodies after painting .
An algorithm for the
inspection of automotive body panel dimensions using
a three-dimensional (3-D)vision sensor has been
developed. The slit light of the 3-D vision sensor
is projected onto a body panel and the reference
block which gives reference coordinates. In order
to measure the gap and flushness between the panel
and the block, this algorithm discriminates the
form of an edge of a cut off or bent panel and estimates
the edge of the panel by fitting a circle.
A pulse- controlled
3-D vision sensor and an algorithm for the inspection
of finished-body dimensions using this sensor have
been developed. This 3-D vision sensor controls
both intensity level and time of the projected slit
light pulse in order to measure finished-body dimensions
with various reflectances. This report describes
these newly developed methods and the performance
of the inspection system based on the methods.
|
