| 摘要 |
This disclosure relates generally to systems and methods for estimating and, at least partially, compensating for fixed pattern noise (FPN) in an image sensor. In one configuration, an estimate of the FPN of an image sensor may be obtained by capturing a dark image (either a linear or an area image, depending on the sensor type) using a first exposure time, an illuminated image may be captured using a second exposure time, the second exposure time is greater than the first exposure time, and the dark image may be subtracted from the illuminated image to compensate, at least partially, for FPN. Certain configurations may utilize virtual scan lines. Two or more dark images may also be utilized to estimate FPN in an image sensor.
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