MOTION DETERMINING APPARATUS, METHOD FOR MOTION DETERMINATION, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM FOR STORING PROGRAM

• US 20190325583A1
• Filed: 03/26/2019
• Published: 10/24/2019
• Est. Priority Date: 04/18/2018
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kakuko, Norihiro, YU, SHANSHAN, OTANI, Takeshi
• Granted Patent: US 11,055,853 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 18/253 of extracted features
• CPC Class Codes: G06F 3/012 Head tracking input arrangements
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06T 2207/30241 Trajectory
• CPC Class Codes: G06T 7/20 Analysis of motion motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51
• CPC Class Codes: G06T 7/70 Determining position or orientation of objects or cameras camera calibration G06T7/80
• CPC Class Codes: G06V 10/242 by image rotation, e.g. by 90 degrees
• CPC Class Codes: G06V 10/806 of extracted features
• CPC Class Codes: G06V 40/167 using comparisons between temporally consecutive images

Abstract

An apparatus for motion determination includes: a memory; and a processor coupled to the memory, the processor being configured to (a) execute a specifying process that includes specifying an orientation of a head portion of a subject, (b) execute a calculation process that includes calculating a trajectory of a position of the head portion of the subject in a vertical direction and a trajectory of the position of the head portion of the subject in a transverse direction in a predetermined time range, and (c) execute a determination process that includes when the calculated trajectory in the vertical direction and the calculated trajectory in the transverse direction satisfy a determination condition for the specified orientation of the head portion, determining that there is a predetermined motion mapped to a motion of the head portion of the subject in the vertical direction.

Claims

1. An apparatus for motion determination, the apparatus comprising:

a memory; and

a processor coupled to the memory, the processor being configured to

execute a specifying process that includes specifying an orientation of a head portion of a subject,

execute a calculation process that includes calculating a trajectory of a position of the head portion of the subject in a vertical direction and a trajectory of the position of the head portion of the subject in a transverse direction in a predetermined time range, and

execute a determination process that includes when the calculated trajectory in the vertical direction and the calculated trajectory in the transverse direction satisfy a determination condition for the specified orientation of the head portion, determining that there is a predetermined motion mapped to a motion of the head portion of the subject in the vertical direction.

2. The apparatus according to claim 1,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

3. The apparatus according to claim 2,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with the upper limit value and the lower limit value of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with the upper limit value and the upper limit value of the subject for the specified orientation of the head portion in the transverse direction.

4. The apparatus according to claim 1,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with a predetermined trajectory for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

5. The apparatus according to claim 4,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the transverse direction.

6. A method for motion determination, the method comprising:

executing a specifying process that includes specifying an orientation of a head portion of a subject,

executing a calculation process that includes calculating a trajectory of a position of the head portion of the subject in a vertical direction and a trajectory of the position of the head portion of the subject in a transverse direction in a predetermined time range, and

executing a determination process that includes when the calculated trajectory in the vertical direction and the calculated trajectory in the transverse direction satisfy a determination condition for the specified orientation of the head portion, determining that there is a predetermined motion mapped to a motion of the head portion of the subject in the vertical direction.

7. The method according to claim 6,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

8. The method according to claim 7,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with the upper limit value and the lower limit value of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with the upper limit value and the upper limit value of the subject for the specified orientation of the head portion in the transverse direction.

9. The method according to claim 6,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with a predetermined trajectory for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

10. The method according to claim 9,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the transverse direction.

11. A non-transitory computer-readable storage medium for storing a program which causes a processor to perform processing for motion determination, the processing comprising:

executing a specifying process that includes specifying an orientation of a head portion of a subject,

executing a calculation process that includes calculating a trajectory of a position of the head portion of the subject in a vertical direction and a trajectory of the position of the head portion of the subject in a transverse direction in a predetermined time range, and

executing a determination process that includes when the calculated trajectory in the vertical direction and the calculated trajectory in the transverse direction satisfy a determination condition for the specified orientation of the head portion, determining that there is a predetermined motion mapped to a motion of the head portion of the subject in the vertical direction.

12. The non-transitory computer-readable storage medium according to claim 11,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with an upper limit value and a lower limit value for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

13. The non-transitory computer-readable storage medium according to claim 12,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with the upper limit value and the lower limit value of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with the upper limit value and the upper limit value of the subject for the specified orientation of the head portion in the transverse direction.

14. The non-transitory computer-readable storage medium according to claim 11,

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory for the specified orientation of the head portion in the vertical direction,

compare the calculated trajectory in the transverse direction with a predetermined trajectory for the specified orientation of the head portion in the transverse direction, and

determine whether or not the determination condition is satisfied.

15. The non-transitory computer-readable storage medium according to claim 14,

wherein the specifying process is further configured to specify the subject, and

wherein the determination process is configured to

compare the calculated trajectory in the vertical direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the vertical direction, and

compare the calculated trajectory in the transverse direction with a predetermined trajectory of the subject for the specified orientation of the head portion in the transverse direction.