Image scaling using pattern matching to select among scaling algorithms

摘要

A system for computing color information of a scaled version of a pixel of interest, includes a pixel identifier for identifying pixel color values for pixels in a neighborhood. The neighborhood includes the pixel of interest. The pixels in the neighborhood form a pattern. A transformer transforms the pixel color values of the pixel of interest and the plurality of neighboring pixels to produce a plurality of transformed values. A geometric pattern identifier identifies a geometric pattern which resembles the pattern formed by the pixels in the neighborhood. The geometric pattern is identified as a function of the transformed values. A selector selects an appropriate scaling algorithm to scale the geometric pattern. The algorithm produces the scaled version of the pixel of interest, along with the color information for the scaled pixel.