Method and system for determining positions on a document
First Claim
1. A document having visible information and encoded positional information, said document comprising:
- a) a document surface;
b) visible information applied on the document surface, said visible information being visibly discernable by the naked human eye;
c) a first pattern applied on the document surface coincident with the visible information applied on the document surface, said first pattern being transparent to the naked human eye while not disturbing the discernability by the naked human eye of the visible information applied on the document surface, said first pattern comprising a plurality of parallel code stripes having encoded therein positional information on the document surface relative a first coordinate axis; and
d) a second pattern applied on the document surface coincident with the visible information applied on the document surface, said second pattern being transparent to the naked human eye while not disturbing the discernability by the naked human eye of the visible information applied on the document surface, said second pattern comprising a plurality of parallel code stripes having encoded therein positional information on the document surface relative a second coordinate axis, the second coordinate axis crossing the first coordinate axis such that the first and second patterns create a lattice.
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Accused Products
Abstract
The invention comprises an information carrier on which the position of a measuring point (37, 41) may be determined using a mobile readout device, as well as an attendant method of determining a position wherein the information carrier features a surface onto which a visible primary information has been applied, in the manner of a book or a geographic map, wherein at least one machine-readable pattern has been printed on the surface, said pattern coding a position information, which upon bringing to bear methods of image analysis and of local sampling of parts (36, 40) of the surface, will allow a determination of position for a measurement point (37, 41) and wherein the pattern coding the position information is transparent in such a way that the primary information on the surface remains visible.
47 Citations
23 Claims
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1. A document having visible information and encoded positional information, said document comprising:
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a) a document surface;
b) visible information applied on the document surface, said visible information being visibly discernable by the naked human eye;
c) a first pattern applied on the document surface coincident with the visible information applied on the document surface, said first pattern being transparent to the naked human eye while not disturbing the discernability by the naked human eye of the visible information applied on the document surface, said first pattern comprising a plurality of parallel code stripes having encoded therein positional information on the document surface relative a first coordinate axis; and
d) a second pattern applied on the document surface coincident with the visible information applied on the document surface, said second pattern being transparent to the naked human eye while not disturbing the discernability by the naked human eye of the visible information applied on the document surface, said second pattern comprising a plurality of parallel code stripes having encoded therein positional information on the document surface relative a second coordinate axis, the second coordinate axis crossing the first coordinate axis such that the first and second patterns create a lattice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for determining a position on a document, the document comprising visible information and transparent markings encoding positional information corresponding to a first coordinate axis and a second coordinate axis, the method comprising the steps of:
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a) sampling a plurality of physical parameter points on the document, each physical parameter point having one of four physical parameter values such that the sampled points define a pattern, the four parameter values respectively indicating;
i) a transparent marking corresponding to the first coordinate axis, ii) a transparent marking corresponding to the second coordinate axis, iii) a transparent marking corresponding to the first and second coordinate axes, and iv) no transparent marking; and
b) calculating a position on the document based on the sampled physical parameter points. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A reading device for determining a position on a document based on transparent markings encoding positional information on the document along a first coordinate axis and a second coordinate, the reading device comprising:
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a) a sensor operable to detect at least one physical parameter of the transparent markings, b) means for sampling with the sensor a plurality of physical parameter points on the document, each physical parameter point having one of four physical parameter values such that the sampled points define a pattern, the four parameter values respectively indicating;
i) a transparent marking corresponding to the first coordinate axis, ii) a transparent marking corresponding to the second coordinate axis, iii) a transparent marking corresponding to the first and second coordinate axes, and iv) no transparent marking; and
c) means for calculating the position based on the sampled physical parameter points.
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Specification