Rational polynomial coefficient

Rational Polynomial Coefficients (RPCs) provide a compact representation of a ground-to-image geometry, allowing photogrammetric processing without requiring a physical camera model, such as the pinhole camera model.

:"The RPC model forms the co-ordinates of the image point as ratios of the cubic polynomials in the co-ordinates of the world or object space or ground point. A set of images is given to determine the set of polynomial coefficients in the RPC model to minimise the error".{{cite conference | date=2008 | first1=S.K. | url=https://www.isprs.org/proceedings/XXXVII/congress/1_pdf/152.pdf | title=Rational polynomial modelling for cartosat-1 data | first2=S.D. | first3=T.P. | first4=B.G. | first5=P. | last1=Singh | last2=Naidu | last3=Srinivasan | last4=Krishna | last5=Srivastava | conference=The International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences | volume=37 | pages=885–888 | via=ISPRS}}