System and method for motion capture
First Claim
1. A motion capture device, for capturing motion of an arm having two sections, connected by an elbow joint, said device comprising:
- a sensor array mounted to a first section of an arm, said sensor array having at least one gyroscopic sensor element and at least one accelerometer; and
a sensor for attachment across the elbow joint, coupled to said sensor array and extending away from said sensor array across said elbow joint to a second section of said arm, wherein a combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array and said sensor for said elbow joint are configured to determine the location and motion of the arm including the lateral circular paths (diameter and relative vertical position), about a shoulder joint of said arm, on which said elbow joint and a corresponding hand are located, and their rotational position on these paths,such device being further configured to;
i) determine the length and angle of a line drawn directly from the hand to the shoulder, assuming that the hand is positioned directly in front of the shoulder,ii) determine rotation of said elbow joint about said line drawn directly from the hand to the shoulder using the tilt of the arm segment measured on the axis perpendicular to the axial plane of arm flex; and
iii) cumulatively determine lateral rotation of the arm about said shoulder joint using said lateral circular paths from said combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array.
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Accused Products
Abstract
A motion capture device provided for capturing motion of a limb having two sections, connected by a flexing joint. A sensor array is mounted to a first section of a limb, having at least one gyroscopic sensor element and at least one accelerometer. A sensor for attachment across the flexible joint is coupled to the sensor array and extends away from the sensor array across the flexing joint to a second section of the limb, where the location and motion of the limb is captured by a combination of data obtained from the at least one gyroscopic sensor element and at least one accelerometer of the sensor array and the sensor for said flexible joint.
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Citations
15 Claims
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1. A motion capture device, for capturing motion of an arm having two sections, connected by an elbow joint, said device comprising:
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a sensor array mounted to a first section of an arm, said sensor array having at least one gyroscopic sensor element and at least one accelerometer; and a sensor for attachment across the elbow joint, coupled to said sensor array and extending away from said sensor array across said elbow joint to a second section of said arm, wherein a combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array and said sensor for said elbow joint are configured to determine the location and motion of the arm including the lateral circular paths (diameter and relative vertical position), about a shoulder joint of said arm, on which said elbow joint and a corresponding hand are located, and their rotational position on these paths, such device being further configured to; i) determine the length and angle of a line drawn directly from the hand to the shoulder, assuming that the hand is positioned directly in front of the shoulder, ii) determine rotation of said elbow joint about said line drawn directly from the hand to the shoulder using the tilt of the arm segment measured on the axis perpendicular to the axial plane of arm flex; and iii) cumulatively determine lateral rotation of the arm about said shoulder joint using said lateral circular paths from said combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A motion capture device, for capturing motion of a leg having two sections, connected by a knee joint, said device comprising:
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a sensor array mounted to a first section of a leg, said sensor array having at least one gyroscopic sensor element and at least one accelerometer; and a sensor for attachment across the knee joint, coupled to said sensor array and extending away from said sensor array across said knee joint to a second section of said leg, wherein a combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array and said sensor for said knee joint are configured to determine the location and motion of the leg including the lateral circular paths (diameter and relative vertical position), about a hip joint of the leg, on which said knee joint and a corresponding foot are located, and their rotational position on these paths, such device being further configured to; i) determine the length and angle of a line drawn directly from the foot to the hip join, assuming that the foot is positioned directly in front of the hip, ii) determine rotation of said elbow joint about said line drawn directly from the foot to the hip using the tilt of the leg segment measured on the axis perpendicular to the axial plane of leg flex; and iii) cumulatively determine lateral rotation of the leg about said hip joint using said lateral circular paths from said combination of data obtained from said at least one gyroscopic sensor element and at least one accelerometer of said sensor array.
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Specification