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Index calculator: Is Log() actually Ln()?

Just wondering if the Log() function in the Pix4D index calculator is Log base10 or Natural Log (Ln)?

The reason I ask is that if I create an equation in Excel to convert a radiometric-jpeg’s Raw Thermal Values to Temperature using LN() I get the more or less equivalent result in Pix4D using Log().

 

Hi Brad,

You are right, the function Log() from Index Calculator is a natural logarithm (base _e=_2.71828 …).

Cheers,