Chapter 2 Reference Manual
Ranger E/D
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Overview
Intensity Components
The Intensity components are used for measuring light reflected from the object. They can
be used for example for measuring gloss, inspecting the structure of the object surface, or
inspecting print properties. They can also be used for measuring how objects respond to
light of different wavelengths, by using for example colored or IR lightings.
There are two different intensity components:
Gray Measures reflected light along one or several rows on the sensor.
HiRes Gray Available in Ranger models C55 and E55. Uses a special row on the
sensor that contains twice as many pixels as the rest of the sensor
(3072 pixels versus 1536 pixels). The profiles delivered by the HiRes
Gray component therefore have twice the resolution compared with the
ordinary Gray component.
Figure 2.7 – Grayscale (left) and gloss (right) images of a CD. Both the text and the crack
are present in both images, but the text is easier to detect in the left image
while the crack is easier to detect in the right.
Some of the range components also deliver intensity measurements. The difference
between using these components and using the Gray or HiRes Gray component is that the
Gray and HiRes Gray components measure the intensity on the same rows for every col-
umn on the sensor, whereas the range components measure the intensity along the
triangulation laser line, which may be located on different sensor rows for each column.
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