Patent ID: 11884214
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H  G | IPC B  G  H

Claim 15:
16. The non-volatile computer storage medium according to claim 15, wherein the target feature model comprises a standard facial feature model, the standard facial feature model comprising a plurality of feature points and three-dimensional coordinates of each of the feature points;
acquiring the target image of the target feature model in the vehicle by the any one driver monitoring assembly comprises:
acquiring a target image of the standard facial feature model by the any one driver monitoring assembly; and

determining the second conversion relationship between the coordinates in the target feature model and the coordinates in the camera coordinate system based on the target image of the target feature model comprises:
determining planar coordinates of the plurality of feature points in the standard facial feature model based on the target image;
acquiring an internal parameter matrix and a distortion coefficient of the any one driver monitoring assembly by calibrating the any one driver monitoring assembly; and

acquiring the second conversion relationship by solving a perspective-n-point problem based on the internal parameter matrix, the distortion coefficient, the three-dimensional coordinates, and the planar coordinates.