> [1] confirms the pixel size to be 19 micro. pypng does have a way to > supply it. Now it's reporting sensible distances, but have to check and > see if there are calibration issues. > > BTW any idea, what "True (measured) resolution = 16lp/mm" means in [1]? It > seems it's called line pairs per mm. Not sure how to correlate it with 19 > micro pixel size. > > [1] > https://pdf.indiamart.com/impdf/22884448473/MY-16502350/dental-rvg-systems-kodak-5200.pdf
I saw that PDF before but by the time I found it Aaron had already hinted at the 12-bit-grayscale nature of the data (the small table in that PDF would eventually have told us so, too). Karsten
