Patent ID: 7948493

Claim:
An apparatus for determining information about shape and/or location of an ellipse in a graphical image, the graphical image comprising a first given direction and a second given direction, comprising: a coordinate determinator for determining two coordinates of a first ellipse point representing a point of the ellipse located furthest in the first given direction, and for determining two coordinates of a second ellipse point representing a point of the ellipse located furthest in a direction opposite to the first given direction, wherein the coordinate determinator is formed to determine at least one parameter of a first bent line segment approximating the ellipse at the first ellipse point or in a surrounding of the first ellipse point, and to determine the coordinates of the first ellipse point based on the at least one parameter of the first bent line segment, and to determine at least one parameter of a second bent line segment approximating the ellipse at the second ellipse point or in a surrounding of the second ellipse point, and to determine the coordinates of the second ellipse point based on the at least one parameter of the second bent line segment; and an ellipse calculator for calculating at least one ellipse parameter based on the two coordinates of the first ellipse point and the two coordinates of the second ellipse point, wherein the at least one ellipse parameter represents the information about the shape and/or the location of the ellipse.