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