Dark-frame subtraction
In digital photography, dark-frame subtraction is a way to minimize image noise for pictures taken with long exposure times. It takes advantage of the fact that a component of image noise, known as fixed-pattern noise, is the same from shot to shot: noise from the sensor, dead or hot pixels. It works by taking a picture with the shutter closed. The dark-frame-subtraction technique is also used in digital photogrammetry, to improve the contrast of satellite and air photograms, and is considered part of "best practice", along with flat-field correction, for astrophotography.
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Dark-frame subtraction
In digital photography, dark-frame subtraction is a way to minimize image noise for pictures taken with long exposure times. It takes advantage of the fact that a component of image noise, known as fixed-pattern noise, is the same from shot to shot: noise from the sensor, dead or hot pixels. It works by taking a picture with the shutter closed. The dark-frame-subtraction technique is also used in digital photogrammetry, to improve the contrast of satellite and air photograms, and is considered part of "best practice", along with flat-field correction, for astrophotography.
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Bildsensorkalibrierung ist ein ...... bildes und eines Dunkelbildes.
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Il dark frame (letteralmente f ...... he di pretrattamento immagini.
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In digital photography, dark-f ...... rection, for astrophotography.
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Темновой кадр — изображение, п ...... тановленное значение выдержки.
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Bildsensorkalibrierung ist ein ...... bildes und eines Dunkelbildes.
@de
Il dark frame (letteralmente f ...... he di pretrattamento immagini.
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In digital photography, dark-f ...... rection, for astrophotography.
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Темновой кадр — изображение, п ...... влияние на снимок к минимуму.
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Bildsensorkalibrierung
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Dark frame
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Dark-frame subtraction
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Темновой кадр
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