Relay camera videometrics based conversion method for unstable platform to static reference

This article proposes a relay camera videometrics based method to convert an unstable measuring platform to a static reference to solve the problems of large error or invalidation caused by measuring platform instability in photogrammetric and videometric measurements. The method installs a relay camera on the unstable platform and captures images of a reference marker fixed on a static reference or vice versa to resolve the 3D movement of the unstable platform relative to the static reference, based on which it corrects the error of the measured results and thus eliminating the influence of the platform movement. It finds new and important applications for videometrics by making high-precision dynamic measurement possible on unstable platforms. Verification experiments and numerical simulations have proven its validity and practicability.