Defect Detection via THz Imaging: Potentials and Limitations
A Brief History of THz Imaging
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Until recent years, terahertz waves were anundiscovered, or most importantly, an unexploitedarea of electromagnetic spectrum. Recent advances inhardware have started to open up the eld to newapplications such as THz imaging. This nondestructive technology can penetrate through diversematerial such that the internal structure which isinvisible to other imaging modalities, can bevisualized. However, automated processing of THzimages can be quite challenging. Low contrast and thepresence of a widely unknown type of noise make theanalysis of these images difficult. Therefore,pre-processing techniq...
Until recent years, terahertz waves were an
undiscovered, or most importantly, an unexploited
area of electromagnetic spectrum. Recent advances in
hardware have started to open up the eld to new
applications such as THz imaging. This non
destructive technology can penetrate through diverse
material such that the internal structure which is
invisible to other imaging modalities, can be
visualized. However, automated processing of THz
images can be quite challenging. Low contrast and the
presence of a widely unknown type of noise make the
analysis of these images difficult. Therefore,
pre-processing techniques are required for further
investigations.
undiscovered, or most importantly, an unexploited
area of electromagnetic spectrum. Recent advances in
hardware have started to open up the eld to new
applications such as THz imaging. This non
destructive technology can penetrate through diverse
material such that the internal structure which is
invisible to other imaging modalities, can be
visualized. However, automated processing of THz
images can be quite challenging. Low contrast and the
presence of a widely unknown type of noise make the
analysis of these images difficult. Therefore,
pre-processing techniques are required for further
investigations.
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