B-SPLINE APPROXIMATION FOR IMAGE PROCESSING
Suriati Suriati · 2012
This paper is to show the research results according to refine an image size enlargement. B-spline approximation based on a two dimensional quadratic interpolation is used to approximate the image color value after enlargement processes. A procedure is performed on every 3 × 3 pixels in the image surface in the form of matrices. Smoothing iterations is also performed twice to obtain better results. A quadratic function is used as transformation. Matlab programming is applied to the JPEG image of size of 30 × 30 and 75 × 98 pixels that are doubled magnified. The results show that this method can smooth the images when the size is enlarged.