“…The following references give additional methods from this category proposed in literature: [263]-[270] 13) Specular Highlight Detection and Removal (SHD): Although, specular highlights in the image constitute UI regions, this particular category of methods attempt to not only identify such regions, but also correct them. In [271], specular highlights is addressed using:a segmentation method based on non-linear filtering and colour image thresholding followed by a fast in painting method. The proposed method in [272], aims to decouple the specular and diffuse components of endoscopic imagery in order to suppress specular reflectance.…”