Tailgating detection using multimodal entry data

A method, comprising:

• in an electronic device:
• receiving data from an access control system for a physical entry point;
• detecting, based on the data, an event that indicates a grant to access a physical area via the physical entry point;
• receiving entry information comprising a set of authentications provided by the access control system within a defined period from a time of the detection of the event;
• receiving a video from at least one imaging device;
• extracting, from a portion of the video, object detection information comprising a set of entries that corresponds to the defined period;
• determining cost information based on a difference between a time of each entry of the set of entries and a time of each authentication of the set of authentications;
• executing a matching operation on the cost information;
• determining a minimum cost association between each authentication of the set of authentications and a corresponding entry of the set of entries based on the executed matching operation;
• determining a correspondence between a subset of the set of entries and the set of authentications based on the minimum cost association;
• detecting, from the set of entries, one or more entries that are different from the subset as one or more tailgating entries;
• and
• controlling an output device to render tailgating information based on the one or more tailgating entries.

A non-transitory computer-readable medium having stored thereon, computer-executable instructions that, when executed by an electronic device, causes the electronic device to perform operations, the operations comprising:

• receiving data from an access control system for a physical entry point;
• detecting, based on the data, an event that indicates a grant to access a physical area via the physical entry point;
• receiving entry information comprising a set of authentications provided by the access control system within a defined period from a time of the detection of the event;
• receiving a video from at least one imaging device;
• extracting, from a portion of the video, object detection information comprising a set of entries that corresponds to the defined period;
• determining cost information based on a difference between a time of each entry of the set of entries and a time of each authentication of the set of authentications;
• executing a matching operation on the cost information;
• determining a minimum cost association between each authentication of the set of authentications and a corresponding entry of the set of entries based on the executed matching operation;
• determining a correspondence between a subset of the set of entries and the set of authentications based on the minimum cost association;
• detecting, from the set of entries, one or more entries that are different from the subset as one or more tailgating entries;
• and
• controlling an output device to render tailgating information based on the one or more tailgating entries.