In mathematics applied to computer graphics, nearest neighbor value interpolation is an advanced method of image
interpolation
In the mathematical field of numerical analysis, interpolation is a type of estimation, a method of constructing (finding) new data points based on the range of a discrete set of known data points.
In engineering and science, one often has a n ...
. This method uses the pixel value corresponding to the smallest
absolute difference when a set of four known value pixels has no mode. Proposed by Dr. Olivier Rukundo in 2012 in his PhD dissertation the first work presented at the fourth International Workshop on Advanced
Computational Intelligence, was based only on the pixel value corresponding to the smallest
absolute difference to achieve high resolution and visually pleasant image. This approach was since upgraded to deal with a wider class of image interpolation
artefacts which reduce the quality of image, and as a result, several future developments have emerged, drawing on various aspects of the pixel value corresponding to the smallest
absolute difference.
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Multivariate interpolation