striping on the above defined vector space from the centered base f sup k formed by two bases f h sup k and f v sup k generating the horizontal and vertical striped vector space to achieve the breakdown of the striping on this base f k from the breakdown on this same base of the luminance values of the image im it can be concluded from the above observations that it is enough to minimize the quantity im lign to this end the approach taken is that of minimizing this quantity by a least squares type of method in seeking the vector lign of the striped space that ascertains that im nign 2 is minimal on the basis of a sufficient number of luminance values if we base our reasoning to begin with on the constant centered polynomials in lines b i we can easily understand the mechanism that will enable us to arrive at the coordinates u03b8 of the constant striping l such that equ1 let u03b8 be the matrix of the coordinates of the striping l i is the matrix of the coordinates of the image on the striped space and b is the matrix of the basic polynomials according to the procedure set forth it is then necessary to find u03b8 such that the mathematical expectation e i u03b8b 2 is minimal to do this it is enough to cancel the derivative of this expression e i.