Combined holography and thermography in a single sensor through image-plane holography at thermal infrared wavelengths.
Holographic interferometry in the thermal wavelengths range, combining a CO(2) laser and digital hologram recording with a microbolometer array based camera, allows simultaneously capturing temperature and surface shape information about objects. This is due to the fact that the holograms are affected by the thermal background emitted by objects at room temperature. We explain the setup and the processing of data which allows decoupling the two types of information. This natural data fusion can be advantageously used in a variety of nondestructive testing applications.
Marc P
MP
Georges
Jean-François
JF
Vandenrijt
Cédric
C
Thizy
Igor
I
Alexeenko
Giancarlo
G
Pedrini
Birgit
B
Vollheim
Ion
I
Lopez
Iagoba
I
Jorge
Jonathan
J
Rochet
Wolfgang
W
Osten
D006696:Holography / Q000295:instrumentation* / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D007259:Infrared Rays; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis; D013696:Temperature; D013817:Thermography / Q000295:instrumentation* / Q000379:methods*; D013997:Time Factors