A multi-scale contrast-based image quality assessment model for multi-exposure image fusion.

•Propose a multi-scale contrast-based IQA model for multi-exposure image fusion.•Extract contrast structure and contrast saturation to obtain contrast similarity map.•Compute the weight of each reference image based on its relevance to the MEF image.•Exploit multi-scale scheme to explore image details on MEF quality assessment.•Experimental results justify the accuracy and effectiveness of the proposed method.