Inspec keywords: image fusion; decomposition; least squares approximations; filtering theory

Other keywords: human visual system; pixel-level image fusion; source image decomposition; multiscale edge-preserving decomposition; MSEPD; weighted least square filter; average-value rule

Subjects: Filtering methods in signal processing; Interpolation and function approximation (numerical analysis); Optical, image and video signal processing; Computer vision and image processing techniques; Interpolation and function approximation (numerical analysis)