A new approach for selective edge enhancement using unsharp masking is presented. This is based on the premise that biological vision and image reproduction share common principles. In the traditional approach the high frequency components of the image are emphasized, adding to the signal a constant fraction of its high-pass filtered version. The presence of a linear high-pass filter makes the system extremely sensitive to noise. In our approach, the high frequencies added to input image are weighted by a topographic map corresponding to visually salient regions, obtained by a neurodynamical model of visual attention. In this way, the unsharp masking algorithm becomes local and adaptive, enhancing differently the edges according to human perception.

Gasparini, F., Corchs, S., Schettini, R. (2005). Adaptive edge enhancement using a neurodynamical model of visual attention. In Proceedings - International Conference on Image Processing, ICIP (pp.972-975) [10.1109/ICIP.2005.1530556].

Adaptive edge enhancement using a neurodynamical model of visual attention

GASPARINI, FRANCESCA;CORCHS, SILVIA ELENA;SCHETTINI, RAIMONDO
2005

Abstract

A new approach for selective edge enhancement using unsharp masking is presented. This is based on the premise that biological vision and image reproduction share common principles. In the traditional approach the high frequency components of the image are emphasized, adding to the signal a constant fraction of its high-pass filtered version. The presence of a linear high-pass filter makes the system extremely sensitive to noise. In our approach, the high frequencies added to input image are weighted by a topographic map corresponding to visually salient regions, obtained by a neurodynamical model of visual attention. In this way, the unsharp masking algorithm becomes local and adaptive, enhancing differently the edges according to human perception.
paper
edge enhancement, visual attention, adaptive processing
English
IEEE International Conference on Image Processing 2005, ICIP 2005 - 11 September 2005 through 14 September 2005
2005
Proceedings - International Conference on Image Processing, ICIP
9780780391345
2005
3
972
975
1530556
none
Gasparini, F., Corchs, S., Schettini, R. (2005). Adaptive edge enhancement using a neurodynamical model of visual attention. In Proceedings - International Conference on Image Processing, ICIP (pp.972-975) [10.1109/ICIP.2005.1530556].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/13606
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