Motion recognition apparatus and method

A motion recognition apparatus, comprising:

• a storage, being configured to store a feature extractor, a clusterer, a classifier, and data to be recognized;
• and
• a processor electrically connected to the storage, being configured to:
• extract, through the feature extractor, a plurality of first motion feature vectors within a first period of time and a plurality of second motion feature vectors within a second period of time from the data to be recognized, wherein the first period of time is followed by the second period of time;
• calculate and sequence, through the clusterer, distances between each of the first motion feature vectors and a plurality of cluster centroids to generate a first cluster centroid sequence for each of the first motion feature vectors, and distances between each of the second motion feature vectors and the plurality of cluster centroids to generate a second cluster centroid sequence for each of the second motion feature vectors;
• obtain a first histogram based on the number of appearances of the cluster centroids in the plurality of first cluster centroid sequences, obtain a second histogram based on the number of appearances of the cluster centroids in the plurality of second cluster centroid sequences, and obtain a third histogram based on the number of appearances of the cluster centroids in the plurality of first and second cluster centroid sequences;
• and
• recognize, through the classifier, a first segment motion corresponding to the first histogram, a second segment motion corresponding to the second histogram, and a whole motion corresponding to the third histogram.