Systems and methods of person recognition in video streams

A computer system comprising:

• one or more processors;
• and
• memory coupled to the one or more processors, the memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for:
• obtaining data relating to an environment, the data comprising one or more images of a scene within a field of view of the environment;
• detecting a first entity in the one or more images;
• responsive to the detection of the first entity in the one or more images, determining, from analysis of the one or more images, first information that identifies an attribute of the first entity;
• determining, based on at least some of the first information, that the first entity is not identifiable to a computing system having a stored set of classified entities, the determination sufficient to classify the first entity as an unknown entity;
• storing in a database at least some of the data;
• and
• in response to:
• (i) a determination that the first entity is a stranger, (ii) not receiving a user classification of the first entity within a predetermined amount of time, or (iii) a determination that the first entity was involved in a trivial event based on an event categorization, deleting one or more portions of the stored data, wherein the one or more portions of the stored data comprise at least one of:
• one or more images of the first entity;
• or the first information that identifies the attribute of the first entity.