A new edge preserving binary images resizing technique

TitleA new edge preserving binary images resizing technique
Publication TypeJournal Article
Year of Publication2002
AuthorsZahir, S., and R. Ward
JournalJournal of Circuits Systems and Computers

Efficient methods for resizing two-dimensional binary signals axe increasingly on demand for a variety of applications such as computer graphics, computer cartography, and machine generated text.(2,4,6) Recently, algorithms have been proposed such as those based on interpolation methods including nearest neighbor, linear, and Butterworth. Other methods such as splines,(5) wavelets, and DCT-based algorithms(11,12) are also presented. All these methods generate distortion and noticeable degradation in the quality of the signals (e.g., binary images) especially at and around edges. In this paper, we present a new near optimal edge preserving binary image resizing scheme that produces perceptually perfect edges. This scheme is based on edge detection, edge chain coding, edge code representation, and the uses of predetermined resizing patterns. The results obtained by this method show that the resized images are aesthetically and objectively much better than the results of other published methods.

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