Apparatus and method of video tracking

A system for identifying a predetermined event within a sequence of images, the system comprising:

• one or more computers;
• and
• one or more storage devices storing instructions that, when executed by the one or more computers, cause the one or more computers to perform operations comprising:
• obtaining a database of data items each representing one of a plurality of predetermined events;
• identifying candidate event images within the sequence of images;
• comparing data representing at least a first a candidate event image with one or more data items in the database;
• and
• identifying that a predetermined event has occurred within the sequence of images if a candidate event image matches a data item in the database to a predetermined matching threshold degree.

One or more computer-readable storage media storing instructions that when executed by one or more computers cause the one or more computers to perform operations comprising:

• obtaining a database of data items each representing one of a plurality of predetermined events;
• identifying candidate event images within the sequence of images;
• comparing data representing at least a first a candidate event image with one or more data items in the database;
• and
• identifying that a predetermined event has occurred within the sequence of images if a candidate event image matches a data item in the database to a predetermined matching threshold degree.