A Perceptually Relevant Approach to Ringing Region Detection

—An efficient approach toward a no-reference ringing metric intrinsically exists of two steps: first detecting regions in an image where ringing might occur, and second quantifying the ringing annoyance in these regions. This paper presents a novel approach toward the first step: the automatic detection of regions visually impaired by ringing artifacts in compressed images. It is a no-reference approach, taking into account the specific physical structure of ringing artifacts combined with properties of the human visual system (HVS). To maintain low complexity for real-time applications, the proposed approach adopts a perceptually relevant edge detector to capture regions in the image susceptible to ringing, and a simple yet efficient model of visual masking to determine ringing visibility. The approach is validated with the results of a psychovisual experiment, and its performance is compared to existing alternatives in literature for ringing region detection. Experimental resu...

• Type: Journal
• Year: 2010
• Where: TIP
• Authors: Hantao Liu, Nick Klomp, Ingrid Heynderickx
• Keywords: Ringing Annoyance, Ringing Artifacts, TIP 2010, first Detecting Regions