Smart Infrared Inspection System Field Operational Test - Center for ...

REGIONS OF INTEREST
SIRIS measures the thermal data for each outside wheel on both the left and right
sides of the vehicle. The data is collected from three areas of the wheel which the
system identifies as Regions of Interest (ROI). These regions are the hub, rim, and
tire. The software represents these areas on the images on the User Interface as a
yellow circle for the tire, green circle for the rim, and a red dot for the hub.
The correct mapping of the ROI (pictured above) enables SIRIS to evaluate the
thermal data for each component from the identification of these areas. By looking at
the rim, thermal information on the brakes can be found. The hub is measured to
determine the state of the wheel’s bearings, and, of course, the thermal data for the tire
is collected from within the tire area. The results of the gathered data are discussed
later in this manual.
If an alert is issued by the system, the operator should check that the ROI have been
correctly identified first. The ROI could be identified incorrectly which could lead to
false alerts.
While the ROI are identified correctly a majority of the time, ROI can be
misinterpreted, misidentified or not identified. Below is a list of some of the most
common of these misses:
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