Information processing apparatus and information processing method

• US 8,957,890 B2
• Filed: 01/21/2011
• Issued: 02/17/2015
• Est. Priority Date: 01/29/2010
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yamamoto, Kazuyuki
• Primary Examiner(s): EURICE, MICHAEL
• Application Number:
  US13/011,403
• Publication Number:
  US 20110227826A1
• Time in Patent Office: 1,488 Days
• Field of Search: 178/18, 178/4, 178/18.07, 178/19.02, 178/19.03, 523/95, 345156-159, 345/163, 345173-175, 345/179, 345/180, 345/419, 340/12.55, 340/13.31, 455/41.2, 455/566, 348/564, 348/734, 463/37, 463/43, 463/36, 714/819, 715/721, 715/810, 715/821, 715/856, 715/273, 715/702, 715/857, 715/858, 715/862, 715/863, 725/44, 379/433.04, 702/85, 702/94, 702/95, 702/142, 702/152, 382/107, 700/17, 700/18
• US Class Current: 345/419
• 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: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/04186 Touch location disambiguation

Abstract

There is provided an information processing apparatus including a position detection section which detects a position of an object, and a coordinate calculation section which calculates absolute coordinates based on the position of the object detected by the position detection section, and which calculates relative coordinates, which indicate a display position of the object on a screen, depending on the absolute coordinates and a motion of the object. The coordinate calculation section moves the relative coordinates in order for the relative coordinates to be asymptotic to or correspondent to the absolute coordinates based on a predetermined condition.

Claims

1. A gesture recognition system comprising:

a memory having instructions which when executed by motion detecting circuitry cause the motion detecting circuitry to

calculate absolute coordinates which indicate a first position on a screen based on the position of the detected object in space,

calculate relative coordinates, which indicate a second position on the screen which is different from the first position, based on the absolute coordinates and a motion of the object,

display an indicator at the second display position corresponding to the relative coordinates on the screen,

determine whether to cause the relative coordinates to be correspondent to the absolute coordinates or to cause the relative coordinates to be asymptotic to the absolute coordinates based in part on a magnitude relation between a distance from the absolute coordinates to the relative coordinates and a predetermined value, and

move, based on the determination, the relative coordinates in order for the relative coordinates to be asymptotic to or correspondent to the absolute coordinates such that the indicator is redisplayed on the screen at a position corresponding to the moved relative coordinates,

wherein the motion detecting circuitry calculates the relative coordinates further based on a velocity value of the object obtained by time-differentiating the absolute coordinates and in a manner that as a frequency of changes in signs of a velocity value of the object or an angular velocity value of the object is larger, an amount of change of the relative coordinates with respect to the absolute coordinates becomes smaller,

wherein, in response to the distance from the absolute coordinates to the relative coordinates being greater than the predetermined value and a movement velocity value at the relative coordinates being greater than a predetermined velocity value, the motion detecting causes the relative coordinates to be immediately moved to be correspondent to the absolute coordinates.

2. The information processing apparatus according to claim 1, wherein the motion detecting circuitry detects, as the position of the object, at least one position from among a position of an operating tool photographed by a camera, a position of an operating tool detected by a touch panel, a position of an operating tool detected by an ultrasonic sensor, and a position of an operating tool detected by a magnetic sensor.

3. The information processing apparatus according to claim 1, wherein the motion detecting circuitry calculates the relative coordinates based on at least one of an angular velocity value detected by a gyro sensor built into a controller operated by a user, an acceleration value detected by an acceleration sensor built into the controller, and an angular acceleration value detected by an angular acceleration sensor built into the controller.

4. The information processing apparatus according to claim 1, wherein the motion detecting circuitry calculates the relative coordinates in a manner that as an amount of the motion of the object is smaller, an amount of change of the relative coordinates with respect to the absolute coordinates becomes smaller.

5. The information processing apparatus according to claim 1, wherein the motion detecting circuitry further determines whether to cause the relative coordinates to be correspondent to the absolute coordinates or to cause the relative coordinates to be asymptotic to the absolute coordinates based on a magnitude relation between a velocity value of the object or an angular velocity value of the object and a predetermined value.

6. The information processing apparatus according to claim 1, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a velocity value depending on a distance from the absolute coordinates to the relative coordinates.

7. The information processing apparatus according to claim 1, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a velocity value depending on frequency of changes in signs of a velocity value of the object or an angular velocity value of the object.

8. The information processing apparatus according to claim 1, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a larger velocity value as frequency of changes in signs of a velocity value of the object or an angular velocity value of the object is smaller.

9. The information processing apparatus according to claim 1, wherein when the absolute coordinates is not detected by the motion detecting circuitry, the motion detecting circuitry does not cause the relative coordinates to be asymptotic to or correspondent to the absolute coordinates until the absolute coordinates is detected, and when the absolute coordinates is detected, the motion detecting circuitry causes the relative coordinates to be correspondent to the detected absolute coordinates.

10. The information processing apparatus according to claim 1, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a velocity value depending on a velocity value of the object or an angular velocity value of the object.

11. The information processing apparatus according to claim 10, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a larger velocity value as the velocity value of the object or the angular velocity value of the object is larger.

12. The information processing apparatus according to claim 1, wherein the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates by sequentially and asymptotically moving, on a line segment from the absolute coordinates to the relative coordinates, the relative coordinates.

13. The information processing apparatus according to claim 12, wherein moving the relative coordinates to be asymptotic to the absolute coordinates sequentially moves the relative coordinates closer to the absolute coordinates.

14. The information processing apparatus according to claim 13, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a velocity value depending on a velocity value of the object or an angular velocity value of the object.

15. The information processing apparatus according to claim 14, wherein when the motion detecting circuitry determines to cause the relative coordinates to be asymptotic to the absolute coordinates, the motion detecting circuitry causes the relative coordinates to be asymptotic to the absolute coordinates with a larger velocity value as the velocity value of the object or the angular velocity value of the object is larger.

16. An information processing method for providing gesture recognition, comprising:

detecting, via motion detecting circuitry, a position of an object in an open space;

calculating, via the motion detecting circuitry, absolute coordinates which indicate a first position on a screen based on the position of the object in space;

calculating, via the motion detecting circuitry, relative coordinates, which indicate a second position on the screen which is different from the first position, based on the absolute coordinates and a motion of the object;

displaying an indicator at the second display position corresponding to the relative coordinates on the screen;

determining, via the motion detecting circuitry, whether to cause the relative coordinates to be correspondent to the absolute coordinates or to cause the relative coordinates to be asymptotic to the absolute coordinates based in part on a magnitude relation between a distance from the absolute coordinates to the relative coordinates and a predetermined value; and

moving, based on the determining, the relative coordinates in order for the relative coordinates to be asymptotic to or correspondent to the absolute coordinates such that the indicator is redisplayed on the screen at a position corresponding to the moved relative coordinates,

wherein the motion detecting circuitry calculates the relative coordinates further based on a velocity value of the object obtained by time-differentiating the absolute coordinates and in a manner that as a frequency of changes in signs of a velocity value of the object or an angular velocity value of the object is larger, an amount of change of the relative coordinates with respect to the absolute coordinates becomes smaller,

wherein, in response to the distance from the absolute coordinates to the relative coordinates being greater than the predetermined value and a movement velocity value at the relative coordinates being greater than a predetermined velocity value, the motion detecting causes the relative coordinates to be immediately moved to be correspondent to the absolute coordinates.

17. A non-transitory computer-readable medium having computer-readable instructions thereon which when executed by a computer cause the computer to perform a method for providing gesture recognition, the method comprising:

detecting a position of an object in an open space;

calculating, via motion detecting circuitry, absolute coordinates which indicate a first position on a screen based on the position of the object in space;

calculating, via the motion detecting circuitry, relative coordinates, which indicate a second position of at which the object is displayed on the screen which is different from the first position, based on the absolute coordinates and a motion of the object;

displaying an indicator at the second display position corresponding to the relative coordinates on the screen;

determining, via the motion detecting circuitry, whether to cause the relative coordinates to be correspondent to the absolute coordinates or to cause the relative coordinates to be asymptotic to the absolute coordinates based in part on a magnitude relation between a distance from the absolute coordinates to the relative coordinates and a predetermined value; and

moving, based on the determining, the relative coordinates in order for the relative coordinates to be asymptotic to or correspondent to the absolute coordinates based on a predetermined condition such that the indicator is redisplayed on the screen at a position corresponding to the moved relative coordinates,

wherein the motion detecting circuitry calculates the relative coordinates further based on a velocity value of the object obtained by time-differentiating the absolute coordinates and in a manner that as a frequency of changes in signs of a velocity value of the object or an angular velocity value of the object is larger, an amount of change of the relative coordinates with respect to the absolute coordinates becomes smaller,

wherein, in response to the distance from the absolute coordinates to the relative coordinates being greater than the predetermined value and a movement velocity value at the relative coordinates being greater than a predetermined velocity value, motion detecting causes the relative coordinates to be immediately moved to be correspondent to the absolute coordinates.