Implement Laplacian filtering to achieve edge detection.

1. read Image to double

2. Padding & Centering

3. 2D Fourier transform (DFT) to get F(u,v)

4. Design Laplacian filter
   

5. Apply filtering
   

6. Inverse 2D DFT
   

7. Centering again

8. Export image

Note: Set the path of image before execution