Patent ID: 8129666
Filing Date: 2012-03-06
Classification: A61B,G01M

Abstract:
1. A method of measuring an optical surface of a tissue system, the method comprising: forming a spatial distribution pattern on a detector by focusing a light energy propagating from the tissue system through several lenslets of a lenslet array onto the detector so that the pattern includes several spots of light energy; mapping the pattern to a transform array by transforming the pattern with a transform function so that the array comprises values corresponding to locations distributed in a spatial frequency space, each of the values of the array corresponding to an associated local intensity, in the frequency space of the several spots of the pattern; identifying a shape characteristic of the optical surface from a selected value, wherein the selected value is selected from the values of the transform array and corresponds to an associated local intensity, at the corresponding location in the frequency space, of the several spots; and selecting the selected value in response to identifying the selected value as a peak value from within the array.