Hybrid inverse halftoning using adaptive filtering

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.

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: Oscar C. Au, Ming Sun Fu, Peter H. W. Wong, Justy W. C. Wong, Zihua Guo
• Keywords: Hardware, Inverse Halftoning Technique, ISCAS 1999, Spatial Invariant Filtering, Spatial Varying Filtering