<div dir="ltr"><div>Hi all,</div><div><br></div><div>I'm using i.atcorr for atmospheric correction of Pleiades imagery. The data comes as DN in 12 bits. Reading the manual of i.atcorr, I get that I must provide radiance data. Hence I converted each band to radiance using gain and bias from the metadata. Now, for the range parameter in i.atcorr, I assume I must pass the min/max output of <a href="http://r.info">r.info</a> for each band. There's no extra info in the metadata about theoretical range for each band.</div><div><br></div><div>In the i.atcorr manual and in some older emails, I read for example, that the range for Sentinel 2 is 1 to 10000. However here [1] it says: "Per-pixel radiometric measurements are provided in Top Of Atmosphere
(TOA) reflectances along with the parameters to transform them into
radiances". AFAIU, 1,10000 is TOA range. <br></div><div><br></div><div><div>So, I'm a bit lost... What is really this range parameter representing?<br></div></div><div><br></div><div>Thanks much in advance</div><div><br></div><div>Vero<br></div><div><br></div><div>[1] <a href="https://earth.esa.int/web/sentinel/user-guides/sentinel-2-msi/product-types/level-1c">https://earth.esa.int/web/sentinel/user-guides/sentinel-2-msi/product-types/level-1c</a></div></div>