Modified Hough transforms for feature recognition on deformable patterned materials

摘要

This paper reports on the use of a modified Hough transform, particularly its generalized version (GHT). The purpose of the analysis is to recognize features on deformable patterned materials, particularly elasticated textile fabrics such as lace. To cope with arbitrary geometric distortion of the features to be found a feature is divided into several sub-features and the model of the feature is built by choosing a set of points s from these sub-features instead of boundary points. The method is tested on a pattern stretched by up to 20% in one direction, with or without a moderate degree of pattern skew.