Reducing Noise by Image Averaging

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02-05-2005, 01:31 AM

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Reducing Noise by Image Averaging

This section compares several common methods for noise reduction and also introduces an alternative technique: averaging multiple exposures to reduce noise. Image averaging is common in high-end astrophotography, but is arguably underutilized for other types of low-light and night photography. Averaging has the power to reduce noise without compromising detail, because it actually increases the signal to noise ratio of your image.

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