Face acquisition method, device, system and apparatus and medium

The embodiment of the invention provides a face acquisition method, device, system, apparatus and a medium, and the method comprises the steps: carrying out face detection of an image frame in a video, and obtaining feature information of a to-be-detected face; performing retrieval matching in a face feature library corresponding to the video according to the to-be-detected face feature information; if the target face feature information matching the to-be-detected face feature information is retrieved, comparing to-be-detected face feature information with the deflection angle of a face on the face image corresponding to target face feature information to obtain a comparison result; and determining whether to replace the face image corresponding to the target face feature information withthe face image corresponding to the to-be-detected face feature information according to the comparison result to serve as a face acquisition result image corresponding to the video. The invention isused for solving the tech