Adaptively reducing offset in a thermal imaging camera
First Claim
1. A method for collecting a plurality of samples for adjusting a signal, comprising:
- providing a shutter in an opened position to substantially allow a detector of an infrared camera to detect infrared radiation comprising information about a scene;
generating a signal corresponding to the infrared radiation;
initiating a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation;
collecting a plurality of first samples of a reference frame according to a collection instruction;
moving the shutter to the opened position to allow the detector to detect the infrared radiation;
establishing that there is a change in a state of the infrared camera from a first state to a second state;
adjusting the collection instruction in response to the change;
initiating a second touchup iteration by moving the shutter to the closed position;
collecting a plurality of second samples of the reference frame according to the adjusted collection instruction; and
determining a modification of the signal in accordance with at least one of the first samples and the second samples.
5 Assignments
0 Petitions
Accused Products
Abstract
Collecting samples to adjust a signal includes providing a shutter in an opened position to allow a detector of an infrared camera to detect infrared radiation and generate a signal corresponding to the infrared radiation. A first touchup iteration is initiated by moving the shutter to a closed position, and samples of a reference frame are collected according to a collection instruction. The shutter is then moved to the opened position. If there is a change in a state of the infrared camera, the collection instruction is adjusted in response to the change. A second touchup iteration is initiated by moving the shutter to the closed position, and samples are collected according to the adjusted collection instruction. A modification of the signal is determined in accordance with at least some of the samples.
10 Citations
38 Claims
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1. A method for collecting a plurality of samples for adjusting a signal, comprising:
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providing a shutter in an opened position to substantially allow a detector of an infrared camera to detect infrared radiation comprising information about a scene; generating a signal corresponding to the infrared radiation; initiating a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; collecting a plurality of first samples of a reference frame according to a collection instruction; moving the shutter to the opened position to allow the detector to detect the infrared radiation; establishing that there is a change in a state of the infrared camera from a first state to a second state; adjusting the collection instruction in response to the change; initiating a second touchup iteration by moving the shutter to the closed position; collecting a plurality of second samples of the reference frame according to the adjusted collection instruction; and determining a modification of the signal in accordance with at least one of the first samples and the second samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for collecting a plurality of samples for adjusting a signal, comprising:
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a detector of an infrared camera, the detector operable to; detect infrared radiation comprising information about a scene; and generate a signal corresponding to the infrared radiation; a processor operable to; initiate a first touchup iteration by moving a shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; collect a plurality of first samples of a reference frame according to a collection instruction; move the shutter to an opened position to allow the detector to detect the infrared radiation; establish that there is a change in a state of the infrared camera from a first state to a second state; adjust the collection instruction in response to the change; initiate a second touchup iteration by moving the shutter to the closed position; collect a plurality of second samples of the reference frame according to the adjusted collection instruction; and determine a modification of the signal in accordance with at least one of the first samples and the second samples. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for collecting a plurality of samples for adjusting a signal, comprising:
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means for providing a shutter in an opened position to substantially allow a detector of an infrared camera to detect infrared radiation comprising information about a scene; means for generating a signal corresponding to the infrared radiation; means for initiating a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; means for collecting a plurality of first samples of a reference frame according to a collection instruction; means for moving the shutter to the opened position to allow the detector to detect the infrared radiation; means for establishing that there is a change in a state of the infrared camera from a first state to a second state; means for adjusting the collection instruction in response to the change; means for initiating a second touchup iteration by moving the shutter to the closed position; means for collecting a plurality of second samples of the reference frame according to the adjusted collection instruction; and means for determining a modification of the signal in accordance with at least one of the first samples and the second samples.
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22. A method for collecting a plurality of samples for adjusting a signal, comprising:
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providing a shutter in an opened position to substantially allow a detector of an infrared camera to detect infrared radiation comprising information about a scene; generating a signal corresponding to the infrared radiation; initiating a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; collecting a plurality of first samples of a reference frame according to a collection instruction; moving the shutter to the opened position to allow the detector to detect the infrared radiation; establishing that there is a change in a state of the infrared camera from a first state to a second state; adjusting the collection instruction in response to the change; initiating a second touchup iteration by moving the shutter to the closed position; collecting a plurality of second samples of the reference frame according to the adjusted collection instruction; determining a modification of the signal in accordance with at least one of the first samples and the second samples; comparing the modification of the signal to a previous modification; detecting a latent image in response to the comparison; and scheduling a third touchup iteration to collect a third plurality of samples, the third touch-up iteration having a third delay time less than a second delay time between the first touchup and the second touchup, the number of the third plurality of samples greater than the number of the second plurality of samples, wherein establishing that there is the change in the state of the infrared camera and adjusting the collection instruction in response to the change further comprise performing at least one of the following; a first procedure comprising; establishing that there is the change in the state of the infrared camera further comprises establishing that the first state is a changing state and the second state is a steady state; and adjusting the collection instruction in response to the change further comprises; adjusting a first shutter duration of the first touchup iteration to yield a second shutter duration of the second touchup iteration, the second shutter duration less than the first shutter duration; and adjusting a first delay time prior to the first touchup iteration to yield a second delay time prior to the second touchup iteration, the second delay time greater than the first delay time; a second procedure comprising; establishing that there is the change in the state of the infrared camera further comprises establishing that the first state is a steady state and the second state is a changing state; and adjusting the collection instruction in response to the change further comprises; adjusting a first shutter duration of the first touchup iteration to yield a second shutter duration of the second touchup iteration, the second shutter duration greater than the first shutter duration; and adjusting the collection instruction in response to the change further comprises adjusting a first delay time prior to the first touchup iteration to yield a second delay time prior to the second touchup iteration, the second delay time less than the first delay time; a third procedure comprising; establishing that there is the change in the state of the infrared camera further comprises establishing that there is a change in a condition of the infrared camera; and adjusting the collection instruction in response to the change further comprises adjusting a first delay time prior to the first touchup iteration to yield a second delay time prior to the second touchup iteration, the second delay time less than the first delay time; a fourth procedure comprising; establishing that there is the change in the state of the infrared camera further comprises establishing that the first state has a lower temperature and the second state has a higher temperature; and adjusting the collection instruction in response to the change further comprises adjusting a first settle time associated with the first touchup iteration to yield a second settle time associated with the second touchup iteration, the second settle time greater than the first settle time; and a fifth procedure comprising; establishing that there is the change in the state of the infrared camera further comprises establishing that the first state has a higher temperature and the second state has a lower temperature; and adjusting the collection instruction in response to the change further comprises adjusting a first settle time associated with the first touchup iteration to yield a second settle time associated with the second touchup iteration, the second settle time less than the first settle time.
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23. A method for collecting a plurality of samples for adjusting a signal, comprising:
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providing a shutter in an opened position to substantially allow a detector of an infrared camera to detect infrared radiation comprising information about a scene; generating a signal corresponding to the infrared radiation; initiating a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; collecting a plurality of first samples of a reference frame according to a collection instruction; moving the shutter to the opened position to allow the detector to detect the infrared radiation; initiating a second touchup iteration by moving the shutter to the closed position; collecting a plurality of second samples of the reference frame according to the adjusted collection instruction; and determining a modification of the signal in accordance with the first samples and the second samples. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. A system for collecting a plurality of samples for adjusting a signal, comprising:
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a detector of an infrared camera, the detector operable to; detect infrared radiation comprising information about a scene; and generate a signal corresponding to the infrared radiation; a processor operable to; provide a shutter in an opened position to substantially allow a detector of the infrared camera to detect the infrared radiation; initiate a first touchup iteration by moving the shutter to a closed position to substantially prevent the detector from detecting the infrared radiation; collect a plurality of first samples of a reference frame according to a collection instruction; move the shutter to the opened position to allow the detector to detect the infrared radiation; initiate a second touchup iteration by moving the shutter to the closed position; collect a plurality of second samples of the reference frame according to the adjusted collection instruction; and determine a modification of the signal in accordance with the first samples and the second samples. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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Specification