Single camera system for gesture-based input and target indication
First Claim
1. A method of determining a position of an unknown point lying on a predefined plane, comprising the steps of:
- generating an indication of a line in space;
inputting a planar projection of said line in space;
determining a position along a known path lying in a plane by determining an intersection of said known path and said planar projection;
generating another indication of a line in space;
inputting another planar projection of said another line in space;
determining another position along another known path lying said plane by determining an intersection of said another known path and said another planar projection and calculating coordinates of a target point in said plane from said indication determining indicating.
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Accused Products
Abstract
The position of a target lying on a plane is indicated by inputting a pointing direction which is computationally projected onto a plane. If the target is known to lie on a contour, the position is specified unambiguously. Alternatively, the position of a target can be specified by inputting its axial coordinates in successive steps. In another alternative approach, the image containing the target is translated and/or rotated and the target indicated again. The two direction projections are then used to determine the position of the target in 2-space. The direction indications may be input by a camera or other method, such as one or more radio transmitters.
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Citations
10 Claims
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1. A method of determining a position of an unknown point lying on a predefined plane, comprising the steps of:
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generating an indication of a line in space;
inputting a planar projection of said line in space;
determining a position along a known path lying in a plane by determining an intersection of said known path and said planar projection;
generating another indication of a line in space;
inputting another planar projection of said another line in space;
determining another position along another known path lying said plane by determining an intersection of said another known path and said another planar projection and calculating coordinates of a target point in said plane from said indication determining indicating. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of determining a position of an unknown point lying on a predefined plane, comprising the steps of:
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generating an indication of a first line in space aimed at a target on a known two-dimensional surface;
inputting a first indication of said first line in space and determining a first planar projection of said first line in space;
changing a position of said target on said plane;
generating an indication of a second line in space aimed at said target;
inputting a second indication of said second line in space and determining a second planar projection of said second line in space; and
calculating a position of said target responsively to said first and second planar projections. - View Dependent Claims (8)
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9. An image processing computer for identifying a one-dimensional position of a target, comprising
a controller connectable to a camera to receive images therefrom; -
said controller being programmed to calculate from a first of said images a first planar projection of an indication in said first of said images of a first direction onto a predefined plane;
said controller being further programmed to calculate a first intersection of said first planar projection and a first predetermined line lying in said predefined plane;
said controller being further programmed to output an indication of said first intersection, wherein;
said controller is programmed to calculate from a second of said images a second planar projection an indication in said second of said images of a second direction onto said predefined plane;
said controller is programmed to calculate a second intersection of said second planar projection and a second predetermined line lying in said predefined plane;
said controller is programmed to calculate a target position responsively to said first and second intersections;
said indication of said first intersection includes said target position. - View Dependent Claims (10)
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Specification