Resumen
The invention relates to the field of methods for processing and classifying digital images. Concretely, it relates to a method and a system for processing digital images and to a method and a system for classifying digital images according to a quality grading, said quality grading preferably being "very bad", "bad", "regular", "good", "very good", said method comprising the steps of: receiving a set of digital images as a vector of parameters, selecting at least one image quality parameter of the set for each digital image, and developing a model for the classification of digital images using all of the image quality parameters selected in the previous step and the tag for each image, in order to define the validity or non-validity of any image.