Abstract:
Quality Control is one of the most important stages of a manufacturing process
in which the manufactured goods are typically compared to a reference for matching its
dimensions, texture, color and other features. Traditional quality inspection techniques
involve use of a Coordinate Measuring Machine (CMM).This requires contact with the
object under inspection. As it is compulsory for the object to come in direct contact
with CMM, it is therefore unsuitable for delicate, complex and freeform shaped objects.
Moreover techniques involving CMM are slow (frequency is few hundred Hz) and may
modify or damage the object being tested. These techniques also do not provide
information about color and texture of object which may be an important aspect in
quality control.
We have developed a quality inspection tool which is much faster (frequency
greater than 1 kHz) and contactless. Using 3D laser scanning, laser triangulation and
image processing a Color mapped 3D model of an object can be created. Accompanied
with it is a cross platform application with an intuitive GUI, which will enable 3D
model extraction, with accuracy approaching 99%, for fast computerized analysis
without harming the object.
3D laser scanning can also be used in production of custom braces, prosthetics,
game development, conservation of historical artifacts etc.
