COMPUTER INPUT DEVICE
First Claim
1. Computer input apparatus comprising:
- an image capture device; and
a marker member comprising at least two reference indicia,at least a first reference indicium being arranged to emit or reflect light having a first spectral characteristic, andat least a second reference indicium being arranged to emit or reflect light having a second spectral characteristic different from the first spectral characteristic,the image capture device being arranged to distinguish light of said first spectral characteristic from light of said second spectral characteristic thereby to distinguish the at least a first reference indicium from the at least a second reference indicium,the apparatus being configured to capture an image of the at least two reference indicia and to determine by means of said image a position and orientation of the marker member with respect to a reference frame.
1 Assignment
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Accused Products
Abstract
Computer input apparatus comprising: an image capture device; and a marker member comprising at least two reference indicia, at least a first reference indicium being arranged to emit or reflect light having a first spectral characteristic, and at least a second reference indicium being arranged to emit or reflect light having a second spectral characteristic different from the first spectral characteristic, the image capture device being arranged to distinguish light of said first spectral characteristic from light of said second spectral characteristic thereby to distinguish the at least a first reference indicium from the at least a second reference indicium, the apparatus being configured to capture an image of the at least two reference indicia and to determine by means of said image a position and orientation of the marker member with respect to a reference frame.
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Citations
53 Claims
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1. Computer input apparatus comprising:
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an image capture device; and a marker member comprising at least two reference indicia, at least a first reference indicium being arranged to emit or reflect light having a first spectral characteristic, and at least a second reference indicium being arranged to emit or reflect light having a second spectral characteristic different from the first spectral characteristic, the image capture device being arranged to distinguish light of said first spectral characteristic from light of said second spectral characteristic thereby to distinguish the at least a first reference indicium from the at least a second reference indicium, the apparatus being configured to capture an image of the at least two reference indicia and to determine by means of said image a position and orientation of the marker member with respect to a reference frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. Computer input apparatus comprising
an image capture device; - and
a marker member comprising at least three non-colinear reference indicia, the marker member being arranged to be held by a user or attached to a body of a user such that a pair of reference indicia are provided in a mutually spaced apart configuration substantially coincident with an anatomical axis of rotation of a joint of the user, the apparatus being configured to capture an image of the reference indicia and to determine a position and orientation of the marker member with respect to a reference position. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. Apparatus substantially as hereinbefore described with reference to the accompanying drawings.
Specification