Patent ID: 7903864
Filing Date: 2011-03-08
Classification: G01N,G06T

Abstract:
1. A method for the detection of a defect in a solder element based on an X-ray image of the solder element, the method comprising the steps of acquiring an X-ray image of the solder element obtained by directing X-rays through the solder element for collection by an X-ray detector; binarizing the X-ray image at a plurality of binarization thresholds to obtain a plurality of binarized images, each having a respective binarization threshold; for each of the binarized images, extracting information from the binarized image; combining the information extracted from each of the binarized images; and detecting the defect based on the combined information, wherein the step of extracting information from the binarized image comprises the step of estimating the non-defective solder element resulting from the binarization, at the respective binarization threshold, of an X-ray image of a version of the solder element in which the defect is absent.