Patent ID: 9691137
Date: 2017-06-27
CPC Classifications: G06T

Claim:
1. A radial distortion parameter acquiring and correction method, comprising: selecting, by a computer device comprised in a radio distortion parameter acquiring apparatus, a plane as a first plane; making an optical axis of a digital image capture device perpendicular to the first plane, and photographing the first plane to obtain a distorted image of the first plane, wherein the distorted image comprises images of m straight lines, the m straight lines are located on the first plane and are parallel to each other, and m ≧2; acquiring n point sets from the distorted image, determining an outline boundary of the distorted image; acquiring an arc set from the distorted image within the outline boundary; acquiring n arcs by separately acquiring an arc from the arc set, wherein a distance from the arc to a point set among the n point sets is the shortest, each arc represents an image of a straight line in the m straight lines, and 2≦n≦m; obtaining a radial distortion parameter of the digital image capture device according to the n arcs; and correcting the distorted image using the radial distortion parameter.