Infrared monitoring system having variable assignment of grey scale values
First Claim
Patent Images
1. A monitoring system including a device arranged to display an image generated using an infrared detector, and being capable of changing an assignment of grey values to temperatures of objects in the image, wherein:
- said monitoring system further comprises a memory having stored therein a table containing a plurality of alternative assignments of grey values to temperatures of objects sensed by said infrared detector unit, including at least a first assignment in which brighter grey values are assigned to relatively higher temperatures and darker grey values are assigned to relatively lower temperatures, and a second assignment in which brighter grey values are assigned to relatively lower temperatures and darker grey values are assigned to relatively higher temperatures; and
changes to said assignment of grey values are made by selection of an assignment from said table in said memory in response to a user operated input means.
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Abstract
A monitoring system suitable for a vehicle has a display which displays an image of the road area traveled by the vehicle. The system further comprises a controller which is capable of allocating differing sets of grey values held in its memory to the objects in the image. Changes in the allocation of grey values are made in response to a user input, which in a preferred embodiment comprises a grey value allocation switch.
21 Citations
9 Claims
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1. A monitoring system including a device arranged to display an image generated using an infrared detector, and being capable of changing an assignment of grey values to temperatures of objects in the image, wherein:
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said monitoring system further comprises a memory having stored therein a table containing a plurality of alternative assignments of grey values to temperatures of objects sensed by said infrared detector unit, including at least a first assignment in which brighter grey values are assigned to relatively higher temperatures and darker grey values are assigned to relatively lower temperatures, and a second assignment in which brighter grey values are assigned to relatively lower temperatures and darker grey values are assigned to relatively higher temperatures; and
changes to said assignment of grey values are made by selection of an assignment from said table in said memory in response to a user operated input means. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle having a monitoring system including a device arranged to display an image generated using an infrared detector, and being capable of changing an assignment of grey values to temperatures of objects in the image, wherein:
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said monitoring system further comprises a memory having stored therein a table containing a plurality of alternative assignments of grey values to temperatures of objects sensed by said infrared detector unit, including at least a first assignment in which brighter grey values are assigned to relatively higher temperatures and darker grey values are assigned to relatively lower temperatures, and a second assignment in which brighter grey values are assigned to relatively lower temperatures and darker grey values are assigned to relatively higher temperatures; and
changes to said assignment of grey values are made by selection of an assignment from said table in said memory in response to a user operated input means.
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7. A monitoring system comprising:
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an infrared detector unit;
a video display;
a memory having stored therein a table containing a plurality of alternative assignments of grey values to temperatures of objects sensed by said infrared detector unit, including at least a first assignment in which brighter grey values are assigned to relatively higher temperatures and darker grey values are assigned to relatively lower temperatures, and a second assignment in which brighter grey values are assigned to relatively lower temperatures and darker grey values are assigned to relatively higher temperatures; and
a control unit coupled to receive an input signal from said infrared detector, for generating a grey scale image on said video display, according to an assignment of grey values selected from among said assignments contained in said table in said memory; and
user input means for selecting an assignment of grey values from said table, according to a user preference. - View Dependent Claims (8, 9)
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Specification