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Both subjective and quantitative evaluations of the results demonstrate the superior performance of the proposed algorithm, compared to that of the competing methods. This method offers a remarkable improvement of the image quality.

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Coke breeze and anthracite are the traditional heat suppliers to iron and steel industry while global warming issue has been a focus of concern. Using biomass for partial or complete replacement of coke breeze in the iron ore sintering process is an attractive technique for reducing emissions of greenhouse gas and gaseous pollutants. However, short supply of charred wood and low sinter quality for raw biomass are the biggest constraints for wide application in sinter production at present. In this paper, the commercial charcoal made from sawdust, nutshell and some other waste biomass (with extensive source and low cost) was employed as the alternative fuel in the sintering process. The primary fuel was coke breeze with 20%, 40%, 60%, 80% and 100% substitution of the fixed carbon input with