Line structured light vision measuring system complete calibrating method comprising scanning direction information

Abstract

The invention discloses a line structured light vision measuring system complete calibrating method comprising scanning direction information, and belongs to the line structured light vision system calibrating method field. The line structured light vision measuring system complete calibrating method comprises the steps that based on a help of a relative motion calibrating device of a straight line slide rail system, by combining with a motion coordinate system conversion thinking, a routine light plane calibrating process is directly used to acquire a plurality of opposite relative motion calibrating images comprising light strip position information and scanning direction information at the same time by one time, and therefore calibrating steps are simplified, and at the same time, a calculation amount required by solving a structured light plane space equation of a calculation system is greatly reduced. The line structured light vision measuring system complete calibrating method is advantageous in that a scanning direction vector equation is solved and fitted accurately, and the scanning direction can be any direction, and at last, the completer line structured light vision measuring system calibrating method comprising a vector scanning step is defined and determined again. The line structured light vision measuring system complete calibrating method has double effects of improving calibrating efficiency and reducing calibrating errors.

Description

technical field

[0001] The invention belongs to the field of calibration methods for a line structured light vision system, in particular to a complete calibration method for a line structured light vision measurement system including scanning direction information. Background technique

[0002] Vision measurement technology can well adapt to the new standards and requirements of modern industry for the detection of workpiece shape and size. It is a non-contact shape detection method with both precision and efficiency. The line structured light vision system is one of the typical representatives of visual measurement technology. Its basic principle is to use a linear laser to project a laser plane with a completely known spatial attitude on the space object to be detected, form a projected light strip on the surface of the object, and make it The projected light bar moves along a known scanning direction, and a high-precision camera takes multiple pictures at different posit...

Images