Patent Document ID: 9675245
Application ID: 13809954
Patent Status: 1

Claim One:
1. A method for determining the eye torsion, comprising the steps: capturing at least two images of an eye and generating image data; identifying at least one characteristic feature of the eye from the image data; creating a histogram of the directions of the feature in both images; comparing the respective direction histogram of the feature in both captured images to each other; and determining a displacement α of the directions R in the direction histograms, wherein the method further includes using the direction histogram of the feature in both images to determine the rotation of the eye around its viewing direction, and the displacement α is used as a measure for the angle of rotation of the eye around its viewing direction, and wherein the histograms of the feature in both images are matched by a one dimensional shift M into best mutual coverage, where torsion of the eye is determined from the shift M.