Patent Document ID: 9696265
Application ID: 14532036
Patent Flag: 1

Claim One:
1. A method for designing a filter to image a feature on a surface, comprising: a. acquiring an image of said feature, with said image of feature comprising information from multiple points of said feature; b. generating a structural model of said feature by extracting predetermined properties of said feature from said image of feature; c. computing a scattering model for said feature from said structural model of said feature, with said scattering model for feature having information on scattered electromagnetic field from feature propagating in a plurality of scattering angles, wherein said scattered electromagnetic field from feature is generated by scattering of an electromagnetic radiation by said feature; d. acquiring an image of said surface, with said image of surface comprising information from multiple points of said surface; e. generating a structural model of said surface by extracting predetermined properties of said surface from said image of surface; f. computing a scattering model for said surface from said structural model of said surface, with said scattering model for surface having information on scattered electromagnetic field from surface propagating in a plurality of scattering angles, wherein said scattered electromagnetic field from surface is generated by scattering of an electromagnetic radiation by said surface; and g. computing said filter by combining said scattering model for feature and said scattering model for surface to achieve a predetermined filter performance metric, h. whereby said filter is designed to modulate scattered electromagnetic field from said feature and scattered electromagnetic field from said surface to image a feature on said surface.