Patent ID: 9401008
Filing Date: 2016-07-26
CPC Classification: G06K,G06T

Claim Text:
1. A method for identifying and extracting a linear object from an image comprising: 1) acquiring an original image to be processed, wherein the original image to be processed is taken by a camera, received through network transmission, or copied from a compact disc or a removable disk; 2) preprocessing the original image to obtain an enhanced image; 3) extracting edges, wherein edge information of the enhanced image is detected to extract an edge information image from the enhanced image; 4) extracting linear features, wherein linear features of the edge information image are extracted by performing, on the edge information image, a linear feature extracting transform wherein the linear feature extracting transform is a Cluster Radon Transform (CRT) that utilizes a cluster operator in conjunction with a Radon transform, wherein the cluster operator is a function proportional to a cluster distribution density, and the cluster distribution density represents a distribution of edge pixels along a 2-dimensional direction in the edge information image; and 5) identifying and extracting the linear object, wherein the linear object is identified and extracted by distinguishing the linear object from other linear features by considering characteristics of the linear object to be identified and extracted.