METHOD AND APPARATUS FOR DETECTING LINE SEGMENT BY INCREMENTAL PIXEL EXTENSION IN AN IMAGE

摘要

A method and an apparatus for extracting a line segment are provided to obtain the line segment through weight based line fitting by using found pixels. A direction image and a slop image for each edge pixel from a canny girth image obtained from an inputted image are calculated(S204). Arbitrary two pixels of the girth pixels are selected to form a straight line. A line segment candidate pixel is selected through gradual pixel extension from a central point of the two pixels forming the straight line. After performing weight based line fitting by calculating weight values of the selected line segment candidate pixels, a line segment is extracted by checking whether the line segment candidate pixels are connected or not.