Automatic Analysis of Photomechanics Interferogram Using Wavelet Transform
نویسندگان
چکیده
An advanced continuous wavelet transform technique has been developed to automatically analyze photomechanics interferograms. This technique utilizes all possible wavelets to match the local interferogram fringes, and it can automatically detect local fringe frequencies and orientations with high accuracies. The advanced wavelet transform technique has the capability to directly determine gradients of fringe orders (e.g., strains) from a raw interferogram pattern, and it is also very suitable for interferogram filtering. To reduce the processing time, the wavelet transform can be implemented by employing a fast Fourier transform scheme. The technique has been successfully applied to the analyses of various photomechanics interferograms.
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