A multichannel total variational Retinex model based on nonlocal differential operators
MetadataShow full item record
© 2018 SPIE. Characteristics of restoration image such as smoothness, edge and texture, can be better maintained using non-local differential operator. In this paper, we present a nonlocal multichannel total variational (MTV) model for Retinex theory, which can be solved by a fast computational approach based on the alternating direction method of multipliers (ADMM). Experiential results show that our nonlocal MTV method has a good performance on contrast enhancement, non-uniform illumination elimination, noise suppression, and especially for texture preserving. Furthermore, several variational Retinex method are compared to prove that our proposed method achieves more accurate and fewer iterations for recovering the reflectance.
Showing items related by title, author, creator and subject.
Trans-1,2-Dicyano-cyclopropane and Other Cyano-cyclopropane Derivatives : a theoretical and experimental VA, VCD, Raman and ROA spectroscopic study.Jalkanen, Karl; Gale, Julian; Jalkanen, G.; McIntosh, D.; El-Azhary, A.; Jensen, G. (2007)In this work we present the experimental vibrational absorption (VA), vibrational circular dichroism(VCD) and Raman spectra for (+)-trans-1(S),2(S)-dicyanocyclopropane and its dideuterio derivative, trans-1(S),2(S)-dicy ...
How realistic is the pore size distribution calculated from adsorption isotherms if activated carbon is composed of fullerene-like fragmentsTerzyk, A.; Furmaniak, S.; Harris, P.; Gauden, P.; Wloch, J.; Kowalczyk, Poitr; Rychlicki, G. (2007)A plausible model for the structure of non-graphitizing carbon is one which consists of curved, fullerene-like fragments grouped together in a random arrangement. Although this model was proposed several years ago, there ...
Improvement of the Derjaguin−Broekhoff−de Boer Theory for Capillary Condensation/Evaporation of Nitrogen in Mesoporous Systems and Its Implications for Pore Size Analysis of MCM-41 Silicas and Related MaterialsKowalczyk, Piotr; Jaroniec, M.; Terzyk, A.; Kaneko, K.; Do, D. (2005)In this work, we propose an improvement of the classical Derjaguin−Broekhoff−de Boer (DBdB) theory for capillary condensation/evaporation in mesoporous systems. The primary idea of this improvement is to employ the ...