<p>Manufactured goods subjected to complex forming operations, such as drawing, piercing, or stamping, involve cutting and shearing into blanks; shearing promotes the development of strain gradients within the piece, which may result in cracks or fissures in the finished component, and would cause the rejection of the blank. The origin of such defects is under discussion, as they can be attributed to the material or the cutting process. This work proposes a visioplastic analysis based on the macroscopic flow lines developed in the material during shearing. The method is applied to samples cut from advanced high-strength steels that were sheared with different clearances between the shearing blades used. The transversal section of the samples was prepared and etched to reveal these flow lines; the coordinates along five lines were recorded and fed into an algorithm that fitted them to cubic splines to obtain the coordinates and derivative of a new set of data points from which the strain components were computed. The method was tested in two different Advanced High-Strength Steels (AHSS) of various thicknesses and microstructures. It revealed essential details on the shear mechanics that would allow for the improvement of shearing and blanking operations.</p>