Position and orientation measurement method and position and orientation measurement apparatus
First Claim
Patent Images
1. A position and orientation measurement method, comprising:
- an input step of inputting sensed images of a plurality of frames time-serially sensed by an image sensing device;
a detection step of detecting indices allocated in a physical space from each of the sensed images;
an acquisition step of acquiring, with respect to each of the indices detected in the sensed image of a frame of interest, a detection state of an identical index from frames before the frame of interest; and
an estimation step of estimating a position and orientation of the image sensing device using at least information associated with image coordinates of the respective indices detected from the frame of interest in the detection step and the detection state of the identical index from the frames before the frame of interest acquired in the acquisition step.
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Abstract
Indices allocated or set on an object are detected from sensed images of frames, which are time-serially sensed by an image sensing device. In association with each index detected from the sensed image of the frame of interest, a detection condition from frames before the frame of interest is acquired. According to the acquired detection condition of the index, the reliability of this index is calculated. The position and orientation of the object or the image sensing device are calculated using at least information associated with the image coordinates of the detected indices and the reliabilities of the indices.
2 Citations
8 Claims
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1. A position and orientation measurement method, comprising:
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an input step of inputting sensed images of a plurality of frames time-serially sensed by an image sensing device; a detection step of detecting indices allocated in a physical space from each of the sensed images; an acquisition step of acquiring, with respect to each of the indices detected in the sensed image of a frame of interest, a detection state of an identical index from frames before the frame of interest; and an estimation step of estimating a position and orientation of the image sensing device using at least information associated with image coordinates of the respective indices detected from the frame of interest in the detection step and the detection state of the identical index from the frames before the frame of interest acquired in the acquisition step. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A position and orientation measurement apparatus, comprising:
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an input unit configured to input sensed images of a plurality of frames time-serially sensed by an image sensing device; a detection unit adapted to detect indices allocated in a physical space from each of the sensed images; an acquisition unit configured to acquire, with respect to each of the indices detected in the sensed image of a frame of interest, a detection state of an identical index from frames before the frame of interest; an estimation unit configured to estimate a position and orientation of the image sensing device using at least information associated with image coordinates of the respective indices detected from the frame of interest by the detection unit and the detection state of the identical index from the frames before the frame of interest acquired by the acquisition unit.
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Specification