Setting Up Peak Intensity Detection - Matrox GatorEye Series Installation And Technical Reference

30 Chapter 3: Matrox GatorEye User Guide
By grabbing a sequence of images in grayscale as the object moves underneath the
laser plane, your Matrox GatorEye can generate an uncorrected depth map of the
exposed topography of the object. An uncorrected depth map is an image where
the gray value of a pixel represents its depth in the world, although the depth is
not its actual world depth and its shape is not corrected for the angle of the camera.
Your application could use this information to create a partially or fully corrected
depth map.

Setting up peak intensity detection

The laser range operation returns the peak location (Y-position) information in
16-bit format, while it returns the peak intensity information in 8-bit format.
However, the laser range operation uses only one 8-bit destination image buffer
to store both the peak location and intensity information; this buffer must have
the same width and height as the grabbed laser line images.
If the LocatePeakFormat feature is set to Position, each Y-position is stored in two
sequential pixels of the destination image since the peak location (Y-position)
information is in 16-bit format. In addition, since there is one Y-position for each
column of a laser line image, and the destination image buffer must have the same
width as the laser line image, two rows of the destination image are used to store
the Y-position information of each laser line image. If the LocatePeakFormat
feature is set to PositionAndIntensity, Three rows of the destination image are
used to represent a laser line image (two to store the Y-position, and one to store
the intensity). The 2 or 3 rows of information are extracted for each of the source
laser line images, up to a maximum number of frames defined by the
LocatePeakFrameCount feature and limited by the height of the destination
image buffer.