Patent Document ID: 9046353
Application ID: 13565698
Patent Status: 1

Claim One:
1. A computer-implemented method for measuring full field deformation characteristics in three dimensions of a deformable body upon which a visible dot pattern has been applied, the method comprising: (a) receiving corresponding sequences of images from at least two imaging devices positioned facing the dot pattern at different angles, of images including a first frame taken before deformation of the body and a second frame taken after deformation of the body, of the dot pattern before and after deformation of the body; (b) for each image in the first frame, identifying the centroids of the dots with a computer processor, matching the centroids of the dots in an image from one imaging device to the centroids of the dots in a corresponding image from the other imaging device, and generating a three dimensional representation of the centroids of the pattern of dots from the two images; (c) repeat (b) for both images in the second frame; (d) matching the three dimensional representation of the centroids in the first frame to the three dimensional representation of the centroids in the second frame; (e) calculating the displacement vector of the centroids between the first frame and the second frame; and (f) calculating full field displacement in three dimensions based on the displacement vector of the centroids.