Patent Document ID: 20150204663
Application ID: 14117446
Patent Status: 0

Claim One:
1. A method of determining 3D surface position information from a 2D image of an object obtained with structured lighting, the method comprises providing a series of structured lighting patterns, each successive structured lighting pattern in the series comprising a first and second subset of intensity features, each intensity feature of the first set coinciding spatially with a respective one of the intensity features from either the first or second subset from a preceding structured lighting pattern in the series, illuminating the object with different ones of the structured lighting patterns of said series each at least at a different time point; capturing 2D images of the scene, each when the scene is illuminated with a respective one of the lighting patterns; detecting image positions where the intensity features of the first and second subset of the structured lighting patterns are visible in the images; for each successive structured lighting pattern, associating the intensity features of the first subset with image positions where the intensity features of the first subset are visible, based on the associated intensity features of detected image positions with associated intensity features in the image obtained with a preceding structured lighting pattern in said series, and associating intensity features of the second subset with image positions where the intensity features of the second subset are visible, in respective position ranges between pairs of the image positions associated with mutually adjacent intensity features of the first subset, the association being based on the associations of the mutually adjacent intensity features; using the associations between intensity features and image positions in a final structured lighting pattern of the series to identify the intensity features of the final structured lighting pattern for the determination of 3D surface position information.