Patent ID: 7881537
Filing Date: 2011-02-01
Classification: G06K

Abstract:
1. A method comprising: providing to a processor one or more first sequences of learning video data for each of a plurality of actions; identifying and tracking blobs within said learning video data; extracting using the processor one or more features from said identified blobs for each of said plurality of actions; determining using the processor whether at least one extracted feature of one of said plurality of actions provides a discrimination from all other of said plurality of actions; when none of said extracted features of said one of said plurality of actions provides a discrimination from all other of said plurality of actions, providing a second sequence of learning video data for said one of said plurality of actions, said second sequence of learning video data captured under different conditions than said first sequence of learning video data; receiving at the processor a sequence of operational video data; identifying and tracking blobs within said operational video data; extracting using the processor one or more features from said identified blobs in said sequence of operational video data; and comparing using the processor said at least one extracted feature of one of said plurality of actions and said one or more features from said sequence of operational video data.