Proceedings of the Korea Institute of Convergence Signal Processing (융합신호처리학회 학술대회논문집)
- 2000.12a
- /
- Pages.81-84
- /
- 2000
Inverse halftoning Using Anisotropic diffusion and Edge map
비등방성 확산 필터와 에지맵을 이용한 역하프토닝
Abstract
Digital Halftoning convert a continuous-tone images to a binary images. Inverse halftoning addresses the problem of recovering a continuous image from a halftoned binary image. Simple low pass filtering can remove the high frequency noise but it also removes the edge information. Thus the edge information should be separated from the halftoning noise. As a result, the edge of result image is blurring. This paper present that we obtain continuous-tone-image which using Anisotropic diffusion filter. To reduce noise without blurring the edges of reconstructed image use edge map. The experimental results show that proposed method gives a higher PSNR and better subjective quality than conventional methods. As a result, the edge information of reconstructed image reduce blurring.
Keywords