Title :
Hybrid inverse halftoning using adaptive filtering
Author :
Au, Oscar C. ; Fu, Ming Sun ; Wong, Peter H W ; Wong, Justy W C ; Guo, Zihua
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
We propose a novel fast inverse halftoning technique using a combination of spatial varying filtering and spatial invariant filtering. The proposed algorithm is significantly simpler than most existing algorithms. Without explicit edge region classification, the proposed spatial varying filter is shown to be capable of preserving edges effectively
Keywords :
adaptive filters; filtering theory; image reconstruction; iterative methods; mean square error methods; spatial filters; adaptive filtering; edge preservation; fast inverse halftoning technique; high quality reconstructed images; hybrid inverse halftoning; image halftoning; iteration; linear filters; polynomial mapping; spatial invariant filtering; spatial varying filtering; Adaptive filters; Frequency; Gold; Information filtering; Information filters; Low pass filters; Nonlinear filters; PSNR; Pixel; Wiener filter;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.779991
