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• W2129449103 abstract "In this paper, we introduce a novel just noticeable difference (JND) threshold estimation model based on a spatial masking function taking both luminance difference and structural regularity into account. Existing spatial masking functions underestimate the JND threshold for irregular textural regions, because they mainly consider the amplitude of luminance change for simplicity. As regular areas show weak masking effect due to their self-similar structures while irregular regions present strong masking effect, the spatial structure directly determines spatial masking. To effectively measure structural regularity in images under different contents, we propose an adaptive non-local self-similarity analysis based procedure. Then we weight luminance differences with similarity coefficients and deduce a new spatial masking function. Finally, an accurate JND estimation model is introduced. Experimental results demonstrate that the proposed JND model has a better visual effect than other models: it injects much noise into the insensitive regions, whereas little into the sensitive regions." @default.
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• W2129449103 date "2012-08-01" @default.
• W2129449103 modified "2023-09-22" @default.
• W2129449103 title "Self-similarity based structural regularity for just noticeable difference estimation" @default.
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• W2129449103 doi "https://doi.org/10.1016/j.jvcir.2012.04.010" @default.
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