Flare compensation
First Claim
Patent Images
1. A method of compensating flare, comprising the steps of:
- receiving a substrate or drain current representing an amount of charge elements generated in an image sensor;
obtaining a compensation signal from the substrate or drain current; and
combining a sensor output signal and the compensation signal to obtain a corrected output signal.
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Abstract
The flare compensation range of a camera is substantially increased by measuring and averaging a substrate or drain current representing an amount of charge elements generated in an image sensor, which is subsequently subtracted from the output signal of the image sensor.
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Citations
4 Claims
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1. A method of compensating flare, comprising the steps of:
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receiving a substrate or drain current representing an amount of charge elements generated in an image sensor; obtaining a compensation signal from the substrate or drain current; and combining a sensor output signal and the compensation signal to obtain a corrected output signal.
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2. Apparatus for compensating flare, comprising:
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means for receiving a substrate or drain current representing an amount of charge elements generated in an image sensor; means for obtaining a compensation signal from the substrate or drain current; and means for combining a sensor output signal and the compensation signal to obtain a corrected output signal. - View Dependent Claims (3)
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4. A camera, comprising:
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an image sensor; means for receiving a substrate or drain current representing an amount of charge elements generated in an image sensor; means for obtaining a compensation signal from the substrate or drain current; and means for combining a sensor output signal and the compensation signal to obtain a corrected output signal.
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Specification
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Current AssigneeUS Philips Corporation (Koninklijke Philips N.V.)
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Original AssigneeUS Philips Corporation (Koninklijke Philips N.V.)
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InventorsVan Rooij, Johannes H.J.M., Stekelenburg, Michael A.W.
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Primary Examiner(s)Garber, Wendy
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Assistant Examiner(s)MARTIN, ANDREW D
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Application NumberUS08/805,258Time in Patent Office974 DaysField of Search348/241, 348/243, 348/250, 348/248, 348/235, 348/314US Class Current348/241CPC Class CodesH04N 25/63 applied to dark currentH04N 25/715 using frame interline trans...
