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Fine Image Resampling Algorithm

This paper introduces a fine image resampling algorithm intended for corrections of image distortions caused by lenses or similar devices. The algorithm is designed for correction of small distortions in terms of pixel displacement but with high subpixel precision. The geometrical description of the correction is through bilinear interpolation within each node of a sparse square or rectangular mesh. The paper describes the algorithms itself, its features, implementation issues and data formats. Specifically discussed are the issues connected with programmable hardware (FPGA) implementation.