公开(公告)号：US10304210B2

公开(公告)日：2019-05-28

申请号：US15605470

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Allan Lewis ,  Mohammad Naserian

IPC: G06T7/80 ,  H04N17/00 ,  G06T7/10 ,  G06T7/70 ,  B60R1/00

Abstract: A method and apparatus for calibrating a camera are provided. The method includes: detecting at least one edge of fixed object in image received from a camera, determining at least one horizontal midpoint of the at least one edge, calculating a first pixel distance between the determined at least one horizontal midpoint and a pre-stored at least one horizontal midpoint, calculating second pixel distances between a plurality of points on the detected at least one edge of the fixed object and a pre-stored plurality of points of the at least one edge of the fixed object, determining whether to recalibrate the camera based on the first pixel distance and the second pixel distances, and recalibrating the camera if the determining determines to recalibrate the camera.

公开(公告)号：US20180342082A1

公开(公告)日：2018-11-29

申请号：US15605470

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Allan Lewis ,  Mohammad Naserian

IPC: G06T7/80 ,  H04N17/00 ,  G06T7/10 ,  G06T7/70 ,  B60R1/00

CPC classification number: G06T7/80 ,  B60R1/00 ,  B60R2300/308 ,  B60R2300/402 ,  B60R2300/808 ,  G06T7/10 ,  G06T7/70 ,  H04N17/002

Abstract: A method and apparatus for calibrating a camera are provided. The method includes: detecting at least one edge of fixed object in image received from a camera, determining at least one horizontal midpoint of the at least one edge, calculating a first pixel distance between the determined at least one horizontal midpoint and a pre-stored at least one horizontal midpoint, calculating second pixel distances between a plurality of points on the detected at least one edge of the fixed object and a pre-stored plurality of points of the at least one edge of the fixed object, determining whether to recalibrate the camera based on the first pixel distance and the second pixel distances, and recalibrating the camera if the determining determines to recalibrate the camera.

公开(公告)号：US20180216395A1

公开(公告)日：2018-08-02

申请号：US15420137

申请日：2017-01-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohammad Naserian ,  Allan Lewis ,  Shuqing Zeng

IPC: E05F15/70 ,  B60Q1/00 ,  B60Q1/26 ,  B60J5/10

CPC classification number: E05F15/70 ,  B60J5/101 ,  B60Q1/0023 ,  B60Q1/2661 ,  B60Q1/30 ,  B60Q1/323 ,  E05F15/40 ,  E05F2015/434 ,  E05Y2400/44 ,  E05Y2400/45 ,  E05Y2400/54 ,  E05Y2900/532 ,  E05Y2900/546

Abstract: A method and apparatus for controlling movement of a liftgate are provided. The method includes: capturing an image of a pattern on a surface; determining a distance between the liftgate and the surface based on the image of the pattern; and controlling a movement of the liftgate based on the determined distance.