A method for the recovery and processing of the image of a flat article, as well as woven fabric for the determination of production of defective

摘要

The method for acquiring and processing the image of a flat article of the woven fabric type, having a periodic structure in at least one direction, with a view to detection of defects, consists: a) in acquiring an initial digital image of the surface of the article, characterised by at least one period vector @ (@, respectively), b) and simultaneously or successively in applying the following succession of steps to each elementary point P in the initial image: b1) calculating a grey scale level NG'(P) which is proportional to the absolute value of the difference in the grey scale levels in the initial image, respectively of the elementary point P and of its counterpart A (D, respectively) under the period vector translation @ (@, respectively); b2) assigning the grey scale level calculated in the preceding step to the elementary point P. IMAGE