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Just-noticeable difference estimation with pixels in images

机译:图像中像素的明显差异估计

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Perceptual visibility threshold estimation, based upon characteristics of the human visual system (HVS), is widely used in digital image and video processing. We propose in this paper a scheme for estimating JND (just-noticeable difference) with explicit formulation for image pixels, by summing the effects of the visual thresholds in sub-bands. The factors being considered include spatial contrast sensitivity function (CSF), luminance adaptation, and adaptive inter- and intra-band contrast masking. The proposed scheme demonstrates favorable results in noise shaping and perceptual visual distortion gauge for different images, in comparison with the relevant existing JND estimators.
机译:基于人类视觉系统(HVS)的特征的感知可见性阈值估计已广泛用于数字图像和视频处理中。我们在本文中提出了一种方案,通过对子带中视觉阈值的影响相加,用显式公式估计图像像素的JND(正好注意到的差异)。考虑的因素包括空间对比度敏感度函数(CSF),亮度适应性以及自适应带间和带内对比度掩蔽。与相关的现有JND估计器相比,该方案在针对不同图像的噪声整形和感知视觉失真度规方面显示出了令人满意的结果。

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