# 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.

- "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".
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## See also

## References

**^**Singh, S.K.; Naidu, S.D.; Srinivasan, T.P.; Krishna, B.G.; Srivastava, P. (2008).*Rational polynomial modelling for cartosat-1 data*(PDF). The International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences.**37**. pp. 885–888 – via ISPRS.