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The invention relates to inspection devices and methods and more specifically to inspection devices and methods for inspecting tubular structures such as cylindrical waveguides.
The invention relates to measurement systems and more specifically to a filter for improving thermocouple accuracy. A technology has been developed that filters extraneous electromagnetic interference signals from low voltage, low-frequency thermocouple signals.
The invention disclosure relates to security systems and more specifically to iris recognition. Iris recognition has been proven to be an accurate and reliable biometric. However, the recognition of non-ideal iris images such as off angle images is still an unsolved problem.
An apparatus and methods for acquiring improved resolution holographic imagery via off-axis illumination in a direct-to-digital holography (DDH) system is described.
A method for obtaining two hererodyned digital holograms, one each at two different wavelengths, simultaneously on the same CCD camera is described.