A technique for designing digital filters that preserve edge position during image resampling is described. The technique consists of designing a set of separable filters, with each filter designed as an all pass filter with nonlinear phase and a set constrained amplitude. The technique is compared to existing techniques.
David M. Bell,
J. Kent Bryan,
"Preserving Edge Position During Resampling", Proc. SPIE 1153, Applications of Digital Image Processing XII, (30 January 1990); doi: 10.1117/12.962333; https://doi.org/10.1117/12.962333