7 December 2001 Image enhancement using nonlinear filters with spatially adaptive neighborhoods
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A new technique for local contrast enhancement using rank-order filters with spatially adaptive neighborhoods is proposed. The technique is based on the unsharp masking operation. However, instead a linear lowpass filtering we use various rank-order smoothing operations. The smoothing is performed over the pixels of spatially adaptive neighborhoods of details to be enhanced and their surrounding backgrounds. Various rank-order filters for local enhancement of small and middle-size details are implemented. Computer simulation results using a real aerial image are provided and discussed.
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Vitaly Kober, Vitaly Kober, Mikhail G. Mozerov, Mikhail G. Mozerov, Josue Alvarez-Borrego, Josue Alvarez-Borrego, Hugo Hidalgo Silva, Hugo Hidalgo Silva, } "Image enhancement using nonlinear filters with spatially adaptive neighborhoods", Proc. SPIE 4472, Applications of Digital Image Processing XXIV, (7 December 2001); doi: 10.1117/12.449781; https://doi.org/10.1117/12.449781


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