Browse > Article
http://dx.doi.org/10.5909/JBE.2015.20.2.238

Image Enhancement Using The Contrast Sensitivity Function  

Bang, Seangbae (Kyung Hee University)
Kim, Wonha (Kyung Hee University)
Publication Information
Journal of Broadcast Engineering / v.20, no.2, 2015 , pp. 238-247 More about this Journal
Abstract
We develop the signal processing method for adaptive implementing direction of signal and the frequency sensitivity of human visual system(HVS). Existing multibnad energy scaling method makes ringing artifact because it does not consider signal direction. To solve this problem, we use block gradient for signal direction in addition to existing method. And we use the fact that frequency component of signal is more sensitive than value of signal over human eyes. we enhance the signal according to contrast sensitivity function(CSF) which is the model of frequency sensitivity of human eye. Compared that the existing analysis models only improve the efficiencies in the existing systems, the developed method can process the image signals to be more desirable and suitable to HVS.
Keywords
Contrast Sensitivity; Human visual system(HVS); DCT;
Citations & Related Records
연도 인용수 순위
  • Reference
1 L.-K. Liu and E. Feig, “A block-based gradient descent search algorithm for block motion estimation in video coding,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 6, no. 4, pp. 419-422, aug, 1996.   DOI   ScienceOn
2 M. for the Subjective Assessment of the Quality of Television Pictures 2002. ITU-R Recommendation BT.500-11, 2002.
3 D. H. Kelly, “Visual contrast sensitivity,” Optica Acta: International Journal of Optics, vol. 24, no. 2, pp. 107-129, 1977.   DOI   ScienceOn
4 B. Wandell, Foundations of Vision. Sinauer Associates Inc, May 1995.
5 F. Mannos and D. Sakrison, “The effects of a visual fidelity criterion of the encoding of images,” IEEE Transactions of Information Theory, vol. 20, no. 4, pp. 525-536, 1974.   DOI
6 Z. Wei and K. Ngan, “Spatio-temporal just noticeable distortion profile for grey scale image/video in dct domain,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 19, no. 3, pp. 337-346, 2009.   DOI   ScienceOn
7 H. A. W. Schober and R. Hilz, “Contrast sensitivity of the human eye for square-wave gratings” Journal of the Optical Society of America, vol. 55, no. 9, pp. 1086-1090, 1965.   DOI
8 Z. Chen and C. Guillemot, “Perceptually-friendly h.264/avc video coding based on foveated just-noticeable-distortion model,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 20, no. 6, pp. 806-819, 2010.   DOI   ScienceOn
9 J. Tang, E. Peli, and S. Action, “Image enhancement using a contrast measure in the compressed domain,” IEEE Signal Process. Lett, vol. 10, pp. 289-292, 2003.   DOI   ScienceOn
10 S. Lee, “An efficient content-based image enhancement in the compressed domain using retinex theory,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 17, no. 2, pp. 199-213, feb. 2007.   DOI   ScienceOn
11 C.-B. Wu, C.-Y. Yao, B.-D. Liu, and J.-F. Yang, “Dct-based adaptive thresholding algorithm for binary motion estimation,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 15, no. 5, pp. 694-7-3, may, 2005.   DOI   ScienceOn