Patent ID: 6317513
Filing Date: 2001-11-13
Classification: B23K,G06T,H05K

Abstract:
An automated method for inspecting a material applied in at least one predefined pattern on part of a substrate to determine an extent to which the material overlays regions of interest on the substrate, the method comprising:providing pre-application image data representative of the regions of interest on the substrate before application of the material;acquiring a post-application image of the part of the substrate after application of the material;aligning substantially the post-application image with the pre-application image data to provide an aligned post-application set of characteristics;processing the aligned post-application set of characteristics to generate a post-application material image representative of the material applied on the part of the substrate;segregating any portion of the regions of interest in the post-application material image using the pre-application image data to provide on-region information representative of the material on the regions of interest; andanalyzing the on-region information to determine the extent to which the material overlays at least one of the regions of interest.