What is the base of the logarithm in Log Transformation in image processing? -


i reading gonzales image processing book , know log transformation has been defined following in book: 

s = c*log(1+r)

now have 1 question:
logarithm based on 10 or natural logarithm based on napier number?

the log transform used dark pixels enhancement. dark pixels in image expanded compare higher pixel values. base can number depending on visualization effect of image.

i think log10 used because related decibel scale in signal processing, such used in signal noise definition.


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