Patent ID: 7113635

Claim:
Process for modelling a 3D scene ( 1 ) defined on the basis of reference images ( 7 ) associated with viewpoints (I) and original depth maps, by calculation of approximate depth maps describing a model, comprising the following steps: predetermining of a maximum permitted distortion ( 5 ) on a 2D synthesized image ( 4 ), generated by the approximation inherent in the model ( 2 ), calculating, for a point I of a reference image ( 7 ) and on the basis of a set of synthesized images ( 4 ) representing the 3D point of the scene corresponding to this point I, of the minimum (z i −Δ zi 1 ) and maximum (z i +Δ zi 2 ) depth values of a depth z i of the point I corresponding to the maximum permitted distortion, calculating a span ([z m (i), z M (i)]) around the depth z i of this point I, dependant on the minimum value of the error Δ zi 2 and on the minimum value of the error Δ zi 1 among the values calculated for the synthesized images of the set, and validating an approximate depth map calculated by iteration, as a function of the approximate depth z app of 3D points of the corresponding model which relate to points I of the reference image, depending on whether it does or does not belong to the span ([z m (i), z M (i)]) calculated for these points I.