Patent ID: 8249387

Claim:
An image processing apparatus for detecting lines of images, comprising: an edge creation unit for creating an edge image using external image data input from an outside; a Hough transform unit for performing a Hough transform on information about pixel coordinates of the edge image created by the edge creation unit; and an effective parameter detection unit for detecting lines of the edge image by checking effective line parameters using results of the Hough transforms, wherein the Hough transform unit performs the Hough transform on a plurality of edge points for e values in a predetermined range by calculating the following equation: x cos θ+ y sin θ=ρ where x and y are x and y coordinates values of each edge point, respectively, wherein the Hough transform unit increases a value of a parameter cell corresponding to ρ and θ acquired using the Equation, by 1, wherein the effective parameter detection unit determines a parameter corresponding to each cell of the parameter memory to be an effective parameter if a value of the cell of the parameter memory is equal to or greater than a predetermined value.