An Edge Preserving Image Resizing Method Based on Cellular Automata

This paper introduces a novel image resizing method for both color and grayscale images. The method could be beneficial in applications where time and quality of the processed images are crucial. The basic idea of the proposed method relies on preserving the edges by partitioning the digital images into homogenous and edge areas during the enlargement process. In addition, the basic fundamentals of Cellular Automata were adopted in order to achieve better performance both in terms of processing time as well as in image quality. By creating appropriate transition rules, the direction of the edges is considered so that every unknown pixel is processed based on its neighbors in order to preserve the quality of the edges. Results demonstrate that the proposed method improves the subjective quality of the enlarged images over conventional resizing methods while keeping the required processing time in low levels.