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Performing Fast Fourier Transform on an Image

deepaksharma0390 asked:

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I want to perform a Fast Fourier Transform on a fingerprint image of M x N pixels on small blocks of 32 x 32 pixels.
So do i need to resize the image to M x M (or) N x N (or) in any square size ?

If not..please help me how to traverse these blocks separately.

            for (j = 0; j < Math.Ceiling((double)img.Height / 32); j++)
                for (i = 0; i < Math.Ceiling((double)(img.Width/ 32)); i++)
                    //transformation in each block of 32 x 32 pix
                    a = i;
                    b = j;
                    for (q = b; q < y + 32;q++)
                        for (p = a; p < x + 32; p++)
                    x = x + 32;
                    y = y + 32;

Please help, anyone.

Tags: C#, Image-Processing


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