Motion recognition method, non-transitory computer-readable recording medium and information processing apparatus

A non-transitory computer-readable recording medium having stored therein a motion recognition program that causes a computer to execute a process comprising:

• acquiring skeleton information by using a captured depth map, in chronological order, that includes positions of respective joints of a subject performing a series of motions that includes a plurality of basic motions;
• segmenting the series of motions based on the acquired skeleton information;
• first determining segmented basic motions are necessary to be observed its process or not necessary for each of a plurality of sections based on the acquired skeleton information;
• second determining which one of a first motion recognition method using a first feature amount that is determined as a result of the basic motion determined at the first determining, and a second motion recognition method using a second feature amount that changes in a process of the basic motion is to be adopted, depending on a type of the basic motions;
• third determining a type of the basic motion by using the skeleton information by either determined one of the first motion recognition method and the second motion recognition method;
• and
• outputting the determined type of the basic motion.

An information processing apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and the processor:
• acquire skeleton information by using a captured depth map, in chronological order, that includes positions of respective joints of a subject performing a series of motions that includes a plurality of basic motions;
• segment the series of motions based on the acquired skeleton information;
• first determine segmented basic motions are necessary to be observed its process or not necessary for each of a plurality of sections based on the acquired skeleton information;
• second determine which one of a first motion recognition method using a first feature amount that is determined as a result of the basic motion determined at the first determining, and a second motion recognition method using a second feature amount that changes in a process of the basic motion is to be adopted, depending on a type of the basic motions;
• third determine a type of the basic motion by using the skeleton information by either determined one of the first motion recognition method and the second motion recognition method;
• and
• output the determined type of the basic motion.