User's Manual

Table of contents
33.5 The changeables—image optimization and temperature
measurement....................................................................... 189
33.5.1 Level and span .......................................................... 189
33.5.2 Palettes and isotherms ................................................ 190
33.5.3 Object parameters...................................................... 190
33.6 Taking images—practical tips .................................................. 191
33.7 Conclusion .......................................................................... 191
34 About calibration........................................................................... 192
34.1 Introduction ......................................................................... 192
34.2 Definition—what is calibration? ................................................ 192
34.3 Camera calibration at FLIR Systems ......................................... 192
34.4 The differences between a calibration performed by a user and
that performed directly at FLIR Systems..................................... 193
34.5 Calibration, verification and adjustment...................................... 193
34.6 Non-uniformity correction........................................................ 194
34.7 Thermal image adjustment (thermal tuning) ................................ 194
35 History of infrared technology......................................................... 195
36 Theory of thermography................................................................. 198
36.1 Introduction ......................................................................... 198
36.2 The electromagnetic spectrum................................................. 198
36.3 Blackbody radiation............................................................... 198
36.3.1 Planck’s law .............................................................. 199
36.3.2 Wien’s displacement law.............................................. 200
36.3.3 Stefan-Boltzmann's law ............................................... 201
36.3.4 Non-blackbody emitters............................................... 202
36.4 Infrared semi-transparent materials........................................... 204
37 The measurement formula.............................................................. 205
38 Emissivity tables ........................................................................... 209
38.1 References.......................................................................... 209
38.2 Tables ................................................................................ 209
#T810253; r. AA/42549/42549; en-US
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