IJSRP, Volume 4, Issue 5, May 2014 Edition [ISSN 2250-3153]
Safinaz.S.
Abstract:
Image scaling is the process of resizing a digital image, wherein an image is converted from one resolution/dimension to another resolution/dimension without losing the visual content. It has many terminologies in literature such as Image Interpolation, image re-sampling, digital zooming, image magnification or enhancement, etc [1] [2]. Image interpolation algorithms can be grouped in two categories, non-adaptive and adaptive [3] [4]. Interpolating from lower to higher resolution it is termed as up-scaling / up-sampling and from higher to lower resolution it is termed as down-scaling / down-sampling. In this article we propose a non-adaptive image interpolation algorithm to scale images for any given scaling ratio with an enhancement scheme to ensure a better image quality metric (PSNR in dB) of the scaled image.