公开(公告)号：US09691137B2

公开(公告)日：2017-06-27

申请号：US14553774

申请日：2014-11-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xin Du ,  Shuiping Li

IPC: H04N5/217 ,  G06T5/00

CPC classification number: G06T5/006 ,  G06T2207/30204

Abstract: Embodiments of the present invention disclose a radial distortion parameter acquiring method and apparatus. The method includes: randomly selecting 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; acquiring n arcs from the distorted image; and obtaining, by calculation, a radial distortion parameter of the digital image capture device according to the arcs. The apparatus includes: a selecting unit, a photographing unit, an acquiring unit, and a calculating unit. By applying the embodiments of the present invention, only one distorted image needs to be photographed to acquire a radial distortion parameter of a digital image capture device, and the distorted image can be acquired depending on a natural environment.