Nearest Neighbor Interpolation

This is the fastest and least accurate interpolation mode. The pixel value in the destination image is set to the value of the source image pixel closest to the point

(x_S,y_S):D(x_D,y_D) = S(round(x_S), round(y_S)).

To use the nearest neighbor interpolation, set the parameter interpolation to IPPI_INTER_NN.