26 September 2013 Single pass image warping method with anisotropic filter
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Abstract
Conventional image capture and display devices are prone to various form of optical artifacts. These artifacts are inherent to the non-ideal behavior of the various optical elements such as sensors, displays, lens, prisms, mirrors, light sources. These optical distortions may be corrected digitally by image warping technology. Image warping may be defined as a process of dynamically resampling a regularly spaced input image to produce a nonregular spacing output image. In this paper, one-pass algorithm for digital image warping is presented. It is based on anisotropic circularly symmetric antialiasing filtering over elliptical or rectangular footprint. It is shown that developed design provides flexibility and better image quality than known two-pass methods. The proposed algorithm has been embedded into a few display processors for optical distortion corrections both at image acquisition and displaying sides.
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Vladimir Lachine, Gregory Smith, Louie Lee, "Single pass image warping method with anisotropic filter", Proc. SPIE 8856, Applications of Digital Image Processing XXXVI, 885611 (26 September 2013); doi: 10.1117/12.2026556; https://doi.org/10.1117/12.2026556
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