Inverse halftoning using wavelets Conference Paper uri icon

abstract

  • This paper introduces a new approach to inverse halftoning using nonorthogonal wavelets. The distinct features of this wavelet-based approach are: a) edge information in the highpass wavelet images of a halftone is extracted and used to assist inverse halftoning, b) cross-scale correlations in the multiscale wavelet decomposition are used for removing background halftoning noise while preserving important edges in the wavelet lowpass image, c) experiments show that our simple wavelet-based approach outperforms the best results obtained from inverse halftoning methods published in the literature, which are iterative in nature.

author list (cited authors)

  • Xiong, Z., Orchard, M. T., & Ramchandran, K.

complete list of authors

  • Xiong, Z||Orchard, MT||Ramchandran, K

publication date

  • December 1996