Anti-lost method and system, readable storage medium, cloud server and mobile terminal

An anti-lost method, comprising:

• acquiring a reference face image of a person under guardianship and a reference face image of at least one guardian associated with the person under guardianship;
• acquiring an image of a monitored area;
• determining, based on the image of the monitored area, the reference face image of the person under guardianship, and the reference face image of the at least one guardian, physical locations of the person under guardianship and the at least one guardian in the monitored area;
• determining, according to the physical locations of the person under guardianship and the at least one guardian in the monitored area, a physical distance between the person under guardianship and each of the at least one guardian, and determining whether a minimum physical distance is greater than a preset threshold;
• and
• emitting a warning signal in a case where the minimum physical distance is larger than the preset threshold,
• wherein the determining, based on the image of the monitored area, the reference face image of the person under guardianship, and the reference face image of the at least one guardian, physical locations of the person under guardianship and the at least one guardian in the monitored area comprises:
• performing face detection on the image of the monitored area to obtain face image of each person in the monitored area;
• determining, according to the face image of each person in the monitored area, the reference face image of the person under guardianship and the reference face image of the at least one guardian, whether the person under guardianship and the guardian are present in the monitored area;
• acquiring, in a case where the person under guardianship and the guardian are present in the monitored area, body external frames of the person under guardianship and the guardian;
• and
• determining, according to image positions of the body external frames of the person under guardianship and the guardian in the image of the monitored area, physical locations of the guardian and the person under guardianship in the monitored area.

An anti-lost method, comprising:

• acquiring a reference face image of a person under guardianship and a reference face image of at least one guardian associated with the person under guardianship;
• acquiring an image of a monitored area;
• determining, based on the image of the monitored area, the reference face image of the person under guardianship, and the reference face image of the at least one guardian, physical locations of the person under guardianship and the at least one guardian in the monitored area;
• determining, according to the physical locations of the person under guardianship and the at least one guardian in the monitored area, a physical distance between the person under guardianship and each of the at least one guardian, and determining whether a minimum physical distance is greater than a preset threshold;
• and
• emitting a warning signal in a case where the minimum physical distance is larger than the preset threshold,
• wherein before acquiring the reference face image of the person under guardianship and the reference face image of the at least one guardian associated with the person under guardianship, the method further comprises:
• receiving and storing registration information uploaded by a mobile terminal, wherein the registration information comprises:
• reference face images of a plurality of persons;
• and
• the acquiring the reference face image of the person under guardianship and the reference face image of at least one guardian associated with the person under guardianship comprises:
• selecting, in response to a first selection instruction, reference face images of a corresponding person under guardianship and at least one guardian associated with the person under guardianship from the prestored registration information.