IR-PAD SERIES USER MANUAL
22
9-1 Introduction to Radiometry
The basic reason for employing image processing programs when analyzing IR
images is to have a fast and comprehensive means to determine the information
content of an image in numerical terms. Radiometry is considered the base from
which to conduct this analysis.
Typically, converting the gray scale values to values of temperatures requires
either a calibration of individual cameras or field calibration data. The method
for calibrating images provided in this program is camera dependent because
temperature calibration data is collected through an advanced calibration
process at the factory and installed within the software program.
IR Flash Pro looks for a very specific file in its structure and mates that with the
camera serial number automatically read by the program. If this software cannot
match the camera to the calibration file, the user cannot perform temperature
analysis on the data. Contact customer service if there is an issue.
IF YOUR PACKAGE INCLUDES ADDITIONAL LENSES A SEPARATE CALIBRATION
IS REQUIRED FOR EACH LENS. CONTACT CUSTOMER SERVICE IS THERE IS AN
ISSUE.
9-2 Radiometry Correction
The accuracy of temperature conversion is also dependent on the physics of the
scene. These physical properties include humidity, emissivity and reflection of
the target, the transmission in the intervening atmosphere, and the background/
foreground temperature within the scene.
Information for an image is stored in the Project Information/Zones area and can
be retrieved by clicking the drop-down tab next to “Image”. ROI data is stored
under “Zones”.
The dialog box shown below allows users to offset potential
errors by typing precise values into the input field next to the property:
Use the input fields
to enter information
and numerical data.
Users can include data
in reports. To toggle
data on/off click the
squares. Boxes are
green when selected.
IMAGE DATA, I.E. INFORMATION FOR THE ENTIRE IMAGE, IS SEPARATE FROM
REGION OF INTEREST DATA, INFORMATION STORED IN THE ROI CREATED
BY THE USER. VISIT THE APPROPRIATE DROP-DOWN TAB TO INCLUDE
PREFERRED INFORMATION IN THE REPORT.
9.
Radiometry
