Information processing system and information processing method

• US 20050171726A1
• Filed: 03/25/2005
• Published: 08/04/2005
• Est. Priority Date: 10/03/2002
• Status: Active Grant

• Current Assignee: Ryoichi Imaizumi, Yuichi Abe
• Original Assignee: Ryoichi Imaizumi, Yuichi Abe
• Inventors: Abe, Yuichi, Imaizumi, Ryoichi
• Granted Patent: US 6,996,496 B2
• Time in Patent Office: Days
• US Class Current: 702/150
• CPC Class Codes: G01S 5/16 using electromagnetic waves other than radio waves

Abstract

A magnetic 3D-position/orientation measuring device measures the position of a receiver in a measurement space. A control device computes correspondence between a measurement space and a real space based on the measured value and a real-space value, which corresponds to the measured value and which indicates the position of the receiver in a real space. Also, the control device corrects an error of the measured value measured by the magnetic 3D-position/orientation measuring device based on the correspondence between the measurement space and the real space, the error resulting from the ambient environment.

Claims

1-18. -18. (canceled)

19. An information processing system including an information processor, the information processing system comprising:

measured-value input means for inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device;

real-space-value input means for inputting a real-space value which corresponds to the measured value input by the measured-value input means and which indicates the position of the object in a real space;

correspondence computing means for computing correspondence between the measurement space and the real space based on the measured value input by the measured-value input means and the real-space value input by the real-space-value input means;

correcting means for correcting an error of the measured value input by the measured-value input means based on the correspondence between the measurement space and the real space computed by the correspondence computing means, the error resulting from the ambient environment of the first 3D-position measuring device; and

a second 3D-position measuring device includes an ultrasonic 3D-position measuring device, which can measure the position of the object without being affected by the ambient environment, measures the position of the object existing at the same position as that measured by the first 3D-position measuring device so as to output the measured value, the real-space-value input means inputs the measured value output from the second 3D-position measuring device as the real-space value.

20. An information system including an information processor, the information system comprising:

measured-value input means for inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device;

real-space-value input means for inputting a real-space value which corresponds to the measured value input by the measured-value input means and which indicates the position of the object in a real space;

correspondence computing means for computing correspondence between the measurement space and the real space based on the measured value input by the measured-value input means and the real-space value input by the real-space-value input means;

correcting means for correcting an error of the measured value input by the measured-value input means based on the correspondence between the measurement space and the real space computed by the correspondence computing means, the error resulting from the ambient environment of the first 3D-position measuring device, wherein

the correspondence computing means estimates a measured value which has not been input by the measured-value input means and a real-space value which has not been input by the real-space-value input means based on at least one measured value input by the measured-value input means and at least one real-space value input by the real-space-value input means, and computes the correspondence between the measurement space including the input measured value and the estimated measured value and the real space including the input real-space value and the estimated real-space value.

21. An information system including an information processor, the information system comprising:

measured-value input means for inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device;

real-space-value input means for inputting a real-space value which corresponds to the measured value input by the measured-value input means and which indicates the position of the object in a real space;

correspondence computing means for computing correspondence between the measurement space and the real space based on the measured value input by the measured-value input means and the real-space value input by the real-space-value input means;

correcting means for correcting an error of the measured value input by the measured-value input means based on the correspondence between the measurement space and the real space computed by the correspondence computing means, the error resulting from the ambient environment of the first 3D-position measuring device, wherein

the correspondence computing means sequentially updates the correspondence between the measurement space and the real space every time a predetermined condition is satisfied, and the correcting means corrects the measured value input by the measured-value input means based on the latest correspondence between the measurement space and the real space.

22. An information processing method comprising:

inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device;

inputting a real-space value which corresponds to the measured value and which indicates the position of the object in a real space;

computing correspondence between a measurement space and a real space based on the measured value and the real-space value;

correcting an error of the measured value based on the correspondence between the measurement space and the real space, the error resulting from an ambient environment of the first 3D-position measuring device;

estimating a measured value and a real-space-value which have not been inputted based on at least one measured value input and at least one real-space value input; and

computing the correspondence between the measurement space including the input measured value and the estimated measured value and the real space including the input real-space value and the estimated real-space value.

23. An information processing method comprising:

inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device;

inputting a real-space value which corresponds to the measured value and which indicates the spatial position of the object in a real space;

computing correspondence between a measurement space and a real space based on the measured value input and the real-space value input;

correcting an error of the measured value input based on correspondence between the measurement space and the real space, the error resulting from an ambient environment of the first 3D-position measuring device;

sequentially updating the correspondence between the measurement space and the real space every time a predetermined condition is satisfied; and

correcting the measured value input based on a latest correspondence between the measurement space and the real space.