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Need help in implementing Fresnel Transform

I am  new to LabVIEW and need help in performing Fresnel Transform. What my project is to grab images using a camera and to perform fresnel transform.First the image should be mutiplied to an exponential factor exp(−iπ/λd(k2x+ l2y2)) then  perform IFFT. Please help me,,.

     Thanks for your time

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