Computer Vision, Automated Inspection, Radon Transform, Computed Tomography, Fourier Transform.
spectrum with the polar coordinates of the 1D slices. Nevertheless, we can see the 16 x 16 individual metal connections of the BGA. There is a small dense object that is not supposed to be there, to the left of the image center. We found a microbead, one of the defects affecting a BGA, that we