Enlargement and Enhancement of Electronic Endoscopic Images Based on Recursive Minimum-maximum Method

摘要

To compensate for the imperfections of endoscopic mechanical structure and limitations of working space, in paper, a new appraoch based on recursive minimum-maximum mehtod is proposed to enlarge images of medical electronic endoscopic. This method can be used repeatedly to realize 2~n times image enlargement through optimizing the neighbourhood information of the interesting pixels in adjustable windows. In order to ensure the best evaluation of the pixel, the algorithm criterion is presented to decide whether the pixel accepts new value. Experimental results on applying the method to the endoscopic images are presented in this paper. The results demonstrate that the recursive minimum-maximum method for enlarging images can succeed in images blowing-up at the same time it preserves the fine details with rich edge-information.