A method for graphic image processing from existing source image files forming a database from which an image is extracted for said graphic processing operations. The method includes the step of implementing n (n≥1) saliency processing operations in order to form n saliency cards CSi, with i=1 to n; performing a linear combination ∇ i = 1 N ⁢ Ai . SCi ∑ i = 1 n ⁢ Ai in order to obtain a single resulting saliency card; performing a first thresholding on the resulting saliency card; and vectorizing said thresholded card.