1. A method to zoom a region of interest from a digital source image, wherein a resolution of the region of interest is either decimated or enlarged to fit into a destination image, comprising: providing a digital camera to implement the following steps: (1) define size and location of said region of interest as part of said source image; (2) calculate scale of conversion in x- and y-direction; (3) calculate number of rows of pixels of said destination image according to scale of conversion desired in y-direction; (4) calculate number of pixels contained in a row of pixels of said destination image according to scale of conversion desired in x-direction; (5) calculate color values of each pixel along the rows of pixels of the destination image by interpolation from nearest row of pixels of said source image wherein the color values of the pixels of the destination image being located between the left side edge of the source image and the first pixel of the nearest row of pixels of the region of interest of the source image and the color values of the pixels of the destination image being located between the right side edge of the source image and the last pixel of the nearest row of the source image are achieved by replicating the color values of said first, or correspondingly said last, pixel of the nearest row of the source image; and (6) display zoomed region of interest in said destination image.