The SearchFaceImage route performs a facial match search in the specified face database using an image as input.This route compares the provided face with all previously registered faces in the database, returning the most similar one, along with a similarity score that ranges from 0 (no similarity) to 1 (identical).
Multiple faces in the image: When the input image contains multiple faces, the system automatically selects the face that occupies the largest area to perform the search
Single face: If there is only one face in the image, it will be used directly