Patent Document ID: 20130063570
Application ID: 13565698
Patent Status: 0

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, each sequence 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.