Method for producing a 3d scatter plot representing a 3d ear of an individual, and associated system

A method for generating a 3D point cloud representative of a 3D ear of an individual, from a first set of at least one 2D image of said ear, using a parametric 3D ear model, comprising steps of:

• selecting, in each 2D image of the first set, a second set of at least one 2D landmark of an ear;
• registering, when the first set comprises at least two 2D images, each respective 2D landmark;
• determining values of postural parameters of the individual to whom the ear belongs during the capture of each 2D image of the first set and values of the parameters of the parametric 3D ear model, from the second set of at least one 2D landmark of an ear by minimizing a cost function with respect to weighted errors of distances between the estimated reprojection of a 3D vertex in the parametric ear model and the predicted location of the 2D landmark corresponding thereto as detected in the 2D image.