Image processing method, image processing apparatus, and program

Abstract

Function approximation performed when a raster image is converted into a vector image is performed in a simple manner with high accuracy, without using feedback. When anchor points are extracted from a coordinate point sequence obtained from the raster image, and function approximation is performed on the coordinate point sequence between anchor points, an appropriate point among coordinate points defined in a unit approximation section that is partitioned by anchor points is selected, and after setting the direction of the corresponding coordinate point as a tangential direction, correction is performed such that the position of a control point obtained from a tangent line does not intersect another control point.