Patent ID: 9195902
Filing Date: 2015-11-24
Classification: G06K,G06T

Abstract:
1. A straight line detection apparatus comprising: a Hough transform part configured to convert a straight line that passes through an arbitrary point in a specified image to a value set of coordinates (θ,ρ) in a Hough space by representing an arbitrary straight line in the specified image using a length ρ of a perpendicular extending from a reference point of the specified image to the arbitrary straight line in the specified image and an angle θ formed by the perpendicular with a reference axis that passes through the reference point; a counting part configured to count a number of conversions by the Hough transform part for each value set of coordinates (θ,ρ) in the Hough space; an adjustment part configured to adjust a count for each value set of coordinates (θ,ρ) by means of weighting depending on at least one of ρ and θ; and a detection part configured to detect the straight line in the specified image by identifying a value set of coordinates (θ,ρ) for which the adjusted count exceeds a first threshold.