LMI Technologies Gocator 2100 Series, User Manual

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Gocator Line Profile Sensors - User Manual
Tools and Native Drivers • GenTL Driver • 442
Channel Details
pixel channel
See
Data Results
on page 380 for an explanation of the stamp information.
The following table shows how the stamp information is packed into the blue channel. A stamp is a 64-
bit value packed into four consecutive 16-bit blue pixels, with the first byte position storing the most
significant byte.
Stamp Index Blue Pixel Position Details
0 0..3 Version
1 4..7 Frame Count
2 8..11 Timestamp (µs)
3 12..15 Encoder value (ticks)
4 16..19 Encoder index (ticks)
This is the encoder value when the last index is triggered
5 20..23 Digital input states
6 24..27 X offset (nm)
7 28..31 X resolution(nm)
8 32..35 Y offset (nm)
9 36..39 Y resolution (nm)
10 40..43 Z offset (nm)
11 44..47 Z resolution (nm)
12 48..51 Height map Width (in pixels)
13 52..55 Height map length (in pixels)
14 56..59 Specify if the intensity is enabled
Stamp Information from GenTL driver
16-bit Grey Scale Image
When the 16-bit grey scale format is used, the height map, intensity, and stamps are stored sequentially
in the grey scale image.
The last row of the image contains the stamp information.
Rows Details
0 .. (max part height - 1) Height map information. The width and height of the image represent the dimensions
in the X and Y axis. Together with the pixel value, each pixel presents a 3D point in the
real-world coordinates.
The following formula can be used to calculate the real-world coordinates (X, Y, Z) from
pixel coordinates (Px, Py, Pz):
X = X Px * X resolution