System and method for relating a passive sensor to a geographic environment
First Claim
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1. A system for relating a passive sensor to a geographic environment, the passive sensor being operable to sense an image of the geographic environment, comprising:
- storage circuitry for storing map data representative of the geographic environment; and
process circuitry coupled to said storage circuitry and to the passive sensor and operable to;
extract at least one feature from the image;
generate at least one feature from said map data; and
relate at least one said extracted feature to at least one said generated feature, such that the passive sensor is related to the geographic environment, wherein said extracted feature comprises an observed horizon extracted from the image and wherein said generated feature comprises a synthetic horizon generated from said map data representative of the geographic environment as viewed by a hypothetical observer from an assumed pose.
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Abstract
A method and system are provided for relating a passive sensor (14) to a geographic environment (42, 44). The passive sensor (14) senses an image (40) of the geographic environment (42, 44). At least one feature (46) is extracted (26) from the image (40). At least one feature is generated (30) from map data (28) representative of the geographic environment. At least one extracted feature is related (22, 32) to at least one generated feature, such that the passive sensor (14) is related to the geographic environment (42, 44).
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Citations
8 Claims
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1. A system for relating a passive sensor to a geographic environment, the passive sensor being operable to sense an image of the geographic environment, comprising:
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storage circuitry for storing map data representative of the geographic environment; and process circuitry coupled to said storage circuitry and to the passive sensor and operable to; extract at least one feature from the image; generate at least one feature from said map data; and relate at least one said extracted feature to at least one said generated feature, such that the passive sensor is related to the geographic environment, wherein said extracted feature comprises an observed horizon extracted from the image and wherein said generated feature comprises a synthetic horizon generated from said map data representative of the geographic environment as viewed by a hypothetical observer from an assumed pose. - View Dependent Claims (2, 3, 4)
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5. A method of relating a passive sensor to a geographic environment, comprising the steps of:
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sensing an image of the geographic environment with the passive sensor; extracting at least one feature from the image; generating at least one feature from map data representative of the geographic environment; and relating at least one said extracted feature to at least one said generated feature, such that the passive sensor is related to the geographic environment, wherein said extracting step comprises the step of extracting an observed horizon from the from the image and wherein said generating step comprises the step of generating a synthetic horizon from said map data representative of the geographic environment as viewed by a hypothetical observer from an assumed pose. - View Dependent Claims (6, 7, 8)
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Specification