1. A method for determining a three-dimensional representation (V) of an object (O), characterized in that it comprises: the determination ( 404 ) of a set (Ω) of points (u) of a volume (D) and of a value (X(u)) of each of these points (u) at a given instant (t 0 ), the set (Ω) of points (u) comprising points (o) of the object (O) in its position at the given instant (t 0 ), the choosing ( 408 ) of a three-dimensional representation function (V β ) that can be parametrized with parameters (β), and of an operation (Op) giving, on the basis of the three-dimensional representation function (V β ), an estimation function (X˜=Op(V β )) for the value of each point (u) of the set (Ω), the determination of parameters (β), such that, for each point (u) of the set (Ω), the estimation (X˜(u)) of the value of the point (u) gives substantially the value of the point (X(u)), the determination ( 450 ) of an interval acquisition (I k =[t k +δ 0 ; t· k +δ 0 +δ]) of each sectional image (X k ), the determination of a continuous motion of the object during the interval of acquisition of each sectional image, the taking into account of the continuous motion of the object during the acquisition interval so as to determine the three-dimensional representation of the object, further characterized in that: the motion of the object (O) with respect to the section plane (P) comprises a motion of rotation about a fixed axis and with a fixed angular rate and a series of perturbation translations, each undergone by the object between two successive respective sectional images, the continuous motion comprises the rotation about the fixed axis and with the fixed angular rate during the acquisition time for each sectional image, and a linear fraction of the perturbation translation undergone by the object between the sectional image and the next one.