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https://idr.l1.nitk.ac.in/jspui/handle/123456789/12926
Title: | Shock coupled fourth-order diffusion for image enhancement |
Authors: | Jidesh, P. George, S. |
Issue Date: | 2012 |
Citation: | Computers and Electrical Engineering, 2012, Vol.38, 5, pp.1262-1277 |
Abstract: | In this paper a shock coupled fourth-order diffusion filter is proposed for image enhancement. This filter converges at a faster rate while preserving and enhancing edges, ramps and textures present in the images. The proposed filter diffuses with varying magnitudes in the directions normal to the level-curve and along it. The magnitude of the directional diffusion is controlled by a diffusion function, meant to provide a good response in the direction along the level-curves, than across them. The proposed filter can still preserve the planar approximation of the image, thereby avoiding the discrepancy caused due to the staircase effect, as in the second-order counterparts. The anisotropic property of the filter is thoroughly studied, analyzed and demonstrated with perspective and quantitative results. The performance of the proposed filter is compared with the state-of-the-art methods for image enhancement. The quantitative and perspective measures provided endorse the capability of the method to enhance various kinds of images. 2012 Elsevier Ltd. All rights reserved. |
URI: | http://idr.nitk.ac.in/jspui/handle/123456789/12926 |
Appears in Collections: | 1. Journal Articles |
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