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Development of an adaptive bilateral filter for evaluating color image difference

[+] Author Affiliations
Zhaohui Wang

Gjøvik University College, The Norwegian Color Research Laboratory, P.O. Box 191, Teknologiveien 22, N-2802 Gjøvik, Norway

Jon Yngve Hardeberg

Gjøvik University College, The Norwegian Color Research Laboratory, P.O. Box 191, Teknologiveien 22, N-2802 Gjøvik, Norway

J. Electron. Imaging. 21(2), 023021 (Jun 22, 2012). doi:10.1117/1.JEI.21.2.023021
History: Received July 6, 2011; Revised March 20, 2012; Accepted May 14, 2012
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Abstract.  Spatial filtering, which aims to mimic the contrast sensitivity function (CSF) of the human visual system (HVS), has previously been combined with color difference formulae for measuring color image reproduction errors. These spatial filters attenuate imperceptible information in images, unfortunately including high frequency edges, which are believed to be crucial in the process of scene analysis by the HVS. The adaptive bilateral filter represents a novel approach, which avoids the undesirable loss of edge information introduced by CSF-based filtering. The bilateral filter employs two Gaussian smoothing filters in different domains, i.e., spatial domain and intensity domain. We propose a method to decide the parameters, which are designed to be adaptive to the corresponding viewing conditions, and the quantity and homogeneity of information contained in an image. Experiments and discussions are given to support the proposal. A series of perceptual experiments were conducted to evaluate the performance of our approach. The experimental sample images were reproduced with variations in six image attributes: lightness, chroma, hue, compression, noise, and sharpness/blurriness. The Pearson’s correlation values between the model-predicted image difference and the observed difference were employed to evaluate the performance, and compare it with that of spatial CIELAB and image appearance model.

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© 2012 SPIE and IS&T

Citation

Zhaohui Wang and Jon Yngve Hardeberg
"Development of an adaptive bilateral filter for evaluating color image difference", J. Electron. Imaging. 21(2), 023021 (Jun 22, 2012). ; http://dx.doi.org/10.1117/1.JEI.21.2.023021


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