Zooming and Smoothing Images Using Convolution Procedures.
Lamberton,H M, J.F. Sherlock · Defense Technical Information Center (DTIC) · 1983
A procedure is described which enables images to be digitally zoomed, smoothed and differentiated. It uses a least squares polynomial fitting technique. This method reduces to the convolution of an array of samples from the picture with a corresponding array of integers. Several such integer arrays are calculated for a variety of array sizes and polynomial degree. (Author)