Thermal Imaging Camera
Installation Guide
LWIR
5- 6
5.6 Regions of Interest (ROI)
Regions of Interest (ROI) allow you to create up to three areas within the thermal
image and apply individual measurement settings to each one.
The settings applied to an ROI will override any settings specified in the Frame
Settings.
The following options are available for each ROI.
Item
Description
Emissivity
To measure temperature correctly with an infrared camera, the
Emissivity of the target must be known.
If you know the Emissivity of the area covered by an ROI, use the
slider to set the required value, or type it into the text-input box.
For more information on Emissivity, visit
www.ametek-land.com
.
Background
Temperature
The temperature of the area surrounding an object being measured
can have an effect on the temperature value calculated by the
thermal imaging camera e.g. if an object is inside a heated
chamber or furnace, the temperature of the furnace wall will affect
the reading.
You can use the
Background Temperature
setting to input
this temperature value which will be taken into account when
calculating the actual temperature of the target in the ROI.
Threshold
This option allows you to set a value against which all
measurements in the ROI are compared. The Threshold value is
a percentage, so its value can be 0 to 100% and you can use the
High
or
Low
option to show the percentage of pixels either above
or below the set value.
Time Function
This option allows you to select a temperature
Input
value from
the ROI. You can select either the
Min
imum,
Max
imum,
Mean
or
a percentage greater than value (
>%
) for the input.
You can then apply one of the following time function processing
calculations to the input:
None
,
Average
,
Peak Picker
,
Rate of
Change
,
Sample and Hold
.
For example, to display the maximum temperature measured in an
ROI over a period of time, select the
Max
input and apply the
Peak
Picker
function to it.
For more information on Time Functions, refer to Section 5.11.
Summary of Contents for LAND LWIR
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