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The blending-type filter, widely used for several image-processing tasks, is composed of multiple component filters, and it gives out a dividing value between the component filters' outputs in a certain ratio, referred to as a blending coefficient, that can be defined as a function of some observable parameters measured for a given input image. The propriety of the blending-type filter depends on...
This paper presents a method for selective sharpness enhancement that can sharpen only degraded edges blurred by several causes without increasing the visibility of nuisance factors such as random noise. The method is based on the coupled nonlinear reaction-diffusion time-evolution equipped with a second-order nonlinear smoothing term, a reaction term and an overshooting term. The quantitative performance...