부산대학교 도서관

Inverse halftoning is a technique to reproduce a grayscale image from a binary one. As one of sophisticated inverse halftoning methods which can yield high quality grayscale image, there is a look-up table- (LUT) based method. In this paper, a new inverse halftoning method based on both the LUT-based inverse halftoning method and a Gaussian filter is proposed. In the proposed method, the output grayscale image is reproduced by blending the output of the LUT-based inverse halftoning and that of the Gaussian filtering appropriately in accordance with local statistics of the image. The effectiveness and the validity of the proposed method are verified through the experiments.