Algorithm for reconstructing holographic images of defects based on a modified fast Fourier transform

A prototype of a holographic camera has been developed for determining the location and size of volume defects in semiconductor materials. To ensure efficient operation of the holographic camera, in addition to optimizing the optical design, an algorithm was developed to accelerate the process of reconstructing defect images from digital holograms. The volume of holographic data obtained is significant and requires a significant increase in holographic image processing performance. The developed algorithm is based on a mixed-radix fast Fourier transform, which allows for more than halving the digital holographic image reconstruction time compared to standard algorithms.

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