Two New Proposed Image Zooming Methods

In this paper, two algorithms for zooming images are presented. One combines the methods of pixel replication and bilinear interpolation, by making a choice between them through the difference of adjacent pixels. The other one, based on LAZ (locally adaptive zooming method), improves the cubic spline interpolation method. Their basic principles and implementation methods are discussed in detail, respectively. The simulation results have demonstrated that the former is more suitable in the situation where time-saving is more concerned, while the latter emphasizes the quality of magnified image, especially color ones.