Method and device for measuring the multi-dimensional distribution of optical characteristics of an object, by carrying out the following operations: illumination of the object by means of a pulsed light source; and acquisition of an image by modulated detection of light rays coming from the object consecutively to the illumination, the detection being modulated according to an acquisition modulation function G(t) which is continuous, non-sinusoidal and temporal, the acquisition taking place outside the phase of illumination by the light source.