...Presentation Attack Detection for Iris Recognition by...
I(x,, y) = Ii(x,,y) × r(x,,y) (6(6) ) As shown in Equation (6), in the Retinex algorithm, we tried to obtain r(x, y) from the captured image. UUssiningg tthhiiss eeqquuaattiioonn, , ttaakkiinngg...