Using The Genicam-Extension Features; Configuring Your Laser Range Control - Matrox GatorEye Series Installation And Technical Reference

28 Chapter 3: Matrox GatorEye User Guide

Using the GenICam-extension features

Your Matrox GatorEye supports the GenICam-standard programming interface
for machine vision (industrial) cameras. To learn more about the features available,
refer to the GenICam-standard Feature Naming Convention, available on the
GenICam website at: http:\\www.genicam.org.
Additional features, specifically created to work with your Matrox GatorEye
(GenICam-extension features) are detailed in this and the next chapter. Among
the GenICam-extension features, Matrox GatorEye supports the following
additional features:
• Laser range control. Performs a laser line extraction on-board.
• Quadrature decoder. Decodes input from a rotary encoder with quadrature
output.

Configuring your laser range control

It is sometimes useful to find the position of the highest intensity in every column
of an image. The LocatePeak... GenICam-extension features allow you to
configure Matrox GatorEye to perform very fast and efficient peak intensity
detection on each column of pixels in a source image (laser range control). The
operation finds the neighborhood in each column with the greatest average
intensity and records the average as the peak intensity value for that column. The
sub-pixel weighted center of the neighborhood is recorded as the position of the
peak intensity value.
You can, for example, create a structured light application using the LocatePeak...
features with images from a laser line profiling setup (laser-based 3D
reconstruction setup), to establish depth and surface information for an object in
a scene. A basic laser line profiling setup consists of: a device projecting a sheet of
light (usually a laser diode), a camera, and a mechanism to move the object under