公开(公告)号：US10429298B2

公开(公告)日：2019-10-01

申请号：US15764603

申请日：2016-09-30

Applicant: COLOR GRAIL RESEARCH

Inventor： Rémi Vauclin ,  Franck Hennebelle

IPC: G01N21/55 ,  G01J3/10 ,  G01N21/31 ,  G01J3/42

Abstract: Disclosed is a method for determining the reflectance of an object, the method including a step of solving an equation having several unknowns, the equation being obtained from formed images, the reflectance of the object and the illumination of the external light source being two unknowns of the equation. The step of solving the equation includes: calculating solution points of the equation, interpolating the calculated points by way of an interpolation function, and using at least one of the following approximations to solve the equation: a first approximation according to which each image is derived from the emission of a separate light flash, a second approximation according to which the interpolation function determines the stability points of the equation.