Just-noticeable difference estimation with pixels in images

  • Authors:
  • Xiaohui Zhang;Weisi Lin;Ping Xue

  • Affiliations:
  • School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore

  • Venue:
  • Journal of Visual Communication and Image Representation
  • Year:
  • 2008

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Abstract

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.