Edge enhancement for subband coded images

C. Cafforio; Eugenio Di Sciascio; Cataldo Guaragnella

doi:10.1117/1.1359208

1 May 2001 Edge enhancement for subband coded images

C. Cafforio, Eugenio Di Sciascio, Cataldo Guaragnella

Optical Engineering, Vol. 40, Issue 5, (May 2001). https://doi.org/10.1117/1.1359208

Subband coding is a well-established technique. Coding algorithms, however, rarely try to exploit residual similarities between subbands in order to get both coding gain and improvement in visual appearance. In this work we propose a simple postprocessing technique for edge enhancement and ringing-artifact reduction in subband-coded images. The proposed technique employs morphological filtering for preliminary image simplification and uses a novel dual-window nonlinear operator for subsequent edge enhancement. Visual appearance and numerical results confirm the validity of the approach. A simple coding scheme, designed to test the efficiency of the approach, gives good results.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

C. Cafforio, Eugenio Di Sciascio, and Cataldo Guaragnella "Edge enhancement for subband coded images," Optical Engineering 40(5), (1 May 2001). https://doi.org/10.1117/1.1359208

Published: 1 May 2001

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