1. Method for determining the pose of a three-dimensional object in an image, characterized in that it comprises the following steps: acquisition of a generic three-dimensional model of the object, projection of the generic three-dimensional model as at least one representation in two dimensions and association with each representation in two dimensions of information on the pose of the three-dimensional object, selection and positioning of a representation in two dimensions on the object in said image, determination of the three-dimensional pose of the object in the image from at least the pose information associated with the selected representation in two dimensions.