1. A method for assessing the presence or absence of lesion(s) in an image, comprising a) estimating at least one subset of the image, whereby each subset is a candidate lesion area having a visibility, and estimating the background variation of the image in an area surrounding the candidate lesion area, b) correcting the visibility of the candidate lesion area with the background variation, comparing the corrected visibility with a predetermined visibility threshold for lesions in that area, or correcting a predetermined visibility threshold with the background variation, comparing the visibility of the candidate lesion area with the corrected predetermined visibility threshold, c) classifying the candidate lesion area detected in a) with respect to the threshold obtained in step b) as a lesion or not, d) optionally repeating steps a) to c) until all candidate lesion areas have been classified.