IPU 40108
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6)
Area Select – This toggles a rectangular area over the centre of the image. The maximum, minimum
and average temperatures for this area are then displayed in the measurement cursors list, allowing
measurement by area analysis. The area’s position can be moved in conjunction with the zoom & pan control
(see Figure 36). For more information on the zoom & pan control see Figure 40.
Figure 36: Area Select
7 & 8)
Isotherms – This toggles the two isotherms which can be used to highlight areas of the same
temperature in the image. A red and/or blue semi transparent block appears on the histogram which can be
moved and adjusted in the same way as the image span selector. Every object in the image with a temperature
within the range of the isotherms appears either red or blue in the image. Use of the greyscale colour palette is
recommended whilst using the isotherms.
Figure 37: Dual Isotherms
