Definitions for "Bilinear"
Of, pertaining to, or included by, two lines; as, bilinear coördinates.
linear with respect to each of two variables or positions
The term bilinear is referring to a bilinear interpolation. This is simply an interpolation with two variables instead of one.
Keywords:  nearest, pixel, target, map, average
Method used to map a source image to a target image. This method uses the weighted average of the four nearest source pixels to define a target pixel. J K Y Z